Created attachment 39094 [details] example of Gnome Terminal being corrupted by an xmgrace window After the most recent upgrade (Xorg.log reports 1.7.7 and older version is 1.7.4). I have noticed corruption of gnome-terminal, xfce4 terminal, konsole, ksnapshot and rhythmbox windows when passed over the vertical and horizontal edges of certain GUI programs. It is likely that there are many more which show this effect. The problem does not always occur the same way for every offending GUI window, sometimes, it is only vertical lines sometimes it is both horizontal and vertical lines. The offending programs for which I have noticed this effect so far are xfig, xmgrace (grace), and xpaint. I am sure that there are others but tgif and iceweasel, in particular, do not show this effect. Refreshing the terminal window, moving to another desktop and then back again restores the uncorrupted windows although just refreshing a terminal window will not clean up the window menu area which remains corrupt until the desktop is switched. Passing another terminal window also cleans up most of the corrupted area except any portions lying on top of the offending program's window edges. The effect is also present in the subwindows of the xmgrace program and this is quite problematic and makes xmgrace almost unusable. I have noticed this on my Thinkpad T60 system with the Intel 945 graphics card running both in 64 bit and 32 bit modes. I downgraded to version of 2.9.1 of the driver and the corruption problem disappears. This problem seems to occur with all recent kernels. I am running xfce4 4.6.2 as a window manager. I have not tried this with gnome or kde, however the bug has been confirmed by other users. Please see Debian bug #596781 at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=596781 I am attaching a screenshot of the type of corruption typical when gnome-terminal is passed over the corner of an xmgrace window. The xorg.log below is from the Debian bug report of September 13 when I was using an older kernel. Cheers, Carlo -- Package-specific info: /var/lib/x11/X.roster does not exist. /var/lib/x11/X.md5sum does not exist. X server symlink status: lrwxrwxrwx 1 root root 13 Feb 6 2010 /etc/X11/X -> /usr/bin/Xorg -rwxr-xr-x 1 root root 1725256 Sep 8 12:28 /usr/bin/Xorg /var/lib/x11/xorg.conf.roster does not exist. VGA-compatible devices on PCI bus: 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) /etc/X11/xorg.conf does not exist. Kernel version (/proc/version): Linux version 2.6.32-trunk-686 (Debian 2.6.32-5) (ben@decadent.org.uk) (gcc version 4.3.4 (Debian 4.3.4-6) ) #1 SMP Sun Jan 10 06:32:16 UTC 2010 Xorg X server log files on system: -rw-r--r-- 1 root root 24065 Sep 13 07:58 /var/log/Xorg.0.log Contents of most recent Xorg X server log file /var/log/Xorg.0.log: X.Org X Server 1.7.7 Release Date: 2010-05-04 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.32-5-686 i686 Debian Current Operating System: Linux hydride 2.6.32-trunk-686 #1 SMP Sun Jan 10 06:32:16 UTC 2010 i686 Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.32-trunk-686 root=UUID=1695179d-d2f7-4201-8333-f804dedf97d1 ro quiet Build Date: 08 September 2010 07:20:20PM xorg-server 2:1.7.7-6 (Julien Cristau <jcristau@debian.org>) Current version of pixman: 0.16.4 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time: Mon Sep 13 07:58:13 2010 (==) Using system config directory "/usr/share/X11/xorg.conf.d" (==) No Layout section. Using the first Screen section. (==) No screen section available. Using defaults. (**) |-->Screen "Default Screen Section" (0) (**) | |-->Monitor "<default monitor>" (==) No monitor specified for screen "Default Screen Section". Using a default monitor configuration. (==) Automatically adding devices (==) Automatically enabling devices (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist. Entry deleted from font path. (==) FontPath set to: /usr/share/fonts/X11/misc, /usr/share/fonts/X11/100dpi/:unscaled, /usr/share/fonts/X11/75dpi/:unscaled, /usr/share/fonts/X11/Type1, /usr/share/fonts/X11/100dpi, /usr/share/fonts/X11/75dpi, /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType, built-ins (==) ModulePath set to "/usr/lib/xorg/modules" (II) The server relies on udev to provide the list of input devices. If no devices become available, reconfigure udev or disable AutoAddDevices. (II) Loader magic: 0x81ea020 (II) Module ABI versions: X.Org ANSI C Emulation: 0.4 X.Org Video Driver: 6.0 X.Org XInput driver : 7.0 X.Org Server Extension : 2.0 (++) using VT number 7 (--) PCI:*(0:0:2:0) 8086:27a2:17aa:201a Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller rev 3, Mem @ 0xee100000/524288, 0xd0000000/268435456, 0xee200000/262144, I/O @ 0x00001800/8 (--) PCI: (0:0:2:1) 8086:27a6:17aa:201a Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller rev 3, Mem @ 0xee180000/524288 (II) Open ACPI successful (/var/run/acpid.socket) (II) LoadModule: "extmod" (II) Loading /usr/lib/xorg/modules/extensions/libextmod.so (II) Module extmod: vendor="X.Org Foundation" compiled for 1.7.7, module version = 1.0.0 Module class: X.Org Server Extension ABI class: X.Org Server Extension, version 2.0 (II) Loading extension SELinux (II) Loading extension MIT-SCREEN-SAVER (II) Loading extension XFree86-VidModeExtension (II) Loading extension XFree86-DGA (II) Loading extension DPMS (II) Loading extension XVideo (II) Loading extension XVideo-MotionCompensation (II) Loading extension X-Resource (II) LoadModule: "dbe" (II) Loading /usr/lib/xorg/modules/extensions/libdbe.so (II) Module dbe: vendor="X.Org Foundation" compiled for 1.7.7, module version = 1.0.0 Module class: X.Org Server Extension ABI class: X.Org Server Extension, version 2.0 (II) Loading extension DOUBLE-BUFFER (II) LoadModule: "glx" (II) Loading /usr/lib/xorg/modules/extensions/libglx.so (II) Module glx: vendor="X.Org Foundation" compiled for 1.7.7, module version = 1.0.0 ABI class: X.Org Server Extension, version 2.0 (==) AIGLX enabled (II) Loading extension GLX (II) LoadModule: "record" (II) Loading /usr/lib/xorg/modules/extensions/librecord.so (II) Module record: vendor="X.Org Foundation" compiled for 1.7.7, module version = 1.13.0 Module class: X.Org Server Extension ABI class: X.Org Server Extension, version 2.0 (II) Loading extension RECORD (II) LoadModule: "dri" (II) Loading /usr/lib/xorg/modules/extensions/libdri.so (II) Module dri: vendor="X.Org Foundation" compiled for 1.7.7, module version = 1.0.0 ABI class: X.Org Server Extension, version 2.0 (II) Loading extension XFree86-DRI (II) LoadModule: "dri2" (II) Loading /usr/lib/xorg/modules/extensions/libdri2.so (II) Module dri2: vendor="X.Org Foundation" compiled for 1.7.7, module version = 1.1.0 ABI class: X.Org Server Extension, version 2.0 (II) Loading extension DRI2 (==) Matched intel as autoconfigured driver 0 (==) Matched vesa as autoconfigured driver 1 (==) Matched fbdev as autoconfigured driver 2 (==) Assigned the driver to the xf86ConfigLayout (II) LoadModule: "intel" (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so (II) Module intel: vendor="X.Org Foundation" compiled for 1.7.7, module version = 2.12.0 Module class: X.Org Video Driver ABI class: X.Org Video Driver, version 6.0 (II) LoadModule: "vesa" (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so (II) Module vesa: vendor="X.Org Foundation" compiled for 1.7.7, module version = 2.3.0 Module class: X.Org Video Driver ABI class: X.Org Video Driver, version 6.0 (II) LoadModule: "fbdev" (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so (II) Module fbdev: vendor="X.Org Foundation" compiled for 1.7.6.901, module version = 0.4.2 ABI class: X.Org Video Driver, version 6.0 (II) intel: Driver for Intel Integrated Graphics Chipsets: i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45, 4 Series, G45/G43, Q45/Q43, G41, B43, Clarkdale, Arrandale (II) VESA: driver for VESA chipsets: vesa (II) FBDEV: driver for framebuffer: fbdev (II) Primary Device is: PCI 00@00:02:0 (WW) Falling back to old probe method for vesa (WW) Falling back to old probe method for fbdev (II) Loading sub module "fbdevhw" (II) LoadModule: "fbdevhw" (II) Loading /usr/lib/xorg/modules/linux/libfbdevhw.so (II) Module fbdevhw: vendor="X.Org Foundation" compiled for 1.7.7, module version = 0.0.2 ABI class: X.Org Video Driver, version 6.0 drmOpenDevice: node name is /dev/dri/card0 drmOpenDevice: open result is 9, (OK) drmOpenByBusid: Searching for BusID pci:0000:00:02.0 drmOpenDevice: node name is /dev/dri/card0 drmOpenDevice: open result is 9, (OK) drmOpenByBusid: drmOpenMinor returns 9 drmOpenByBusid: drmGetBusid reports pci:0000:00:02.0 (II) intel(0): Creating default Display subsection in Screen section "Default Screen Section" for depth/fbbpp 24/32 (==) intel(0): Depth 24, (--) framebuffer bpp 32 (==) intel(0): RGB weight 888 (==) intel(0): Default visual is TrueColor (II) intel(0): Integrated Graphics Chipset: Intel(R) 945GM (--) intel(0): Chipset: "945GM" (==) intel(0): video overlay key set to 0x101fe (II) intel(0): Output VGA1 has no monitor section (II) intel(0): Output LVDS1 has no monitor section (II) intel(0): found backlight control interface /sys/class/backlight/acpi_video0 (II) intel(0): Output DVI1 has no monitor section (II) intel(0): EDID for output VGA1 (II) intel(0): EDID for output LVDS1 (II) intel(0): Manufacturer: IBM Model: 2887 Serial#: 0 (II) intel(0): Year: 2005 Week: 0 (II) intel(0): EDID Version: 1.3 (II) intel(0): Digital Display Input (II) intel(0): Max Image Size [cm]: horiz.: 33 vert.: 21 (II) intel(0): Gamma: 2.20 (II) intel(0): No DPMS capabilities specified (II) intel(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 (II) intel(0): First detailed timing is preferred mode (II) intel(0): redX: 0.596 redY: 0.347 greenX: 0.335 greenY: 0.543 (II) intel(0): blueX: 0.158 blueY: 0.143 whiteX: 0.313 whiteY: 0.329 (II) intel(0): Manufacturer's mask: 0 (II) intel(0): Supported detailed timing: (II) intel(0): clock: 122.0 MHz Image Size: 331 x 207 mm (II) intel(0): h_active: 1680 h_sync: 1712 h_sync_end 1776 h_blank_end 1904 h_border: 0 (II) intel(0): v_active: 1050 v_sync: 1051 v_sync_end 1054 v_blanking: 1066 v_border: 0 (II) intel(0): Supported detailed timing: (II) intel(0): clock: 101.7 MHz Image Size: 331 x 207 mm (II) intel(0): h_active: 1680 h_sync: 1712 h_sync_end 1776 h_blank_end 1904 h_border: 0 (II) intel(0): v_active: 1050 v_sync: 1051 v_sync_end 1054 v_blanking: 1066 v_border: 0 (II) intel(0): Unknown vendor-specific block f (II) intel(0): LP154W02-TL06 (II) intel(0): EDID (in hex): (II) intel(0): 00ffffffffffff00244d872800000000 (II) intel(0): 000f0103802115780abca59858558b28 (II) intel(0): 24505400000001010101010101010101 (II) intel(0): 010101010101a82f90e0601a10402040 (II) intel(0): 13004bcf10000019b72790e0601a1040 (II) intel(0): 204013004bcf100000190000000f00b3 (II) intel(0): 0a32b30a28140100320c0000000000fe (II) intel(0): 004c503135345730322d544c3036007f (II) intel(0): Not using default mode "320x240" (doublescan mode not supported) (II) intel(0): Not using default mode "400x300" (doublescan mode not supported) (II) intel(0): Not using default mode "400x300" (doublescan mode not supported) (II) intel(0): Not using default mode "512x384" (doublescan mode not supported) (II) intel(0): Not using default mode "640x480" (doublescan mode not supported) (II) intel(0): Not using default mode "640x512" (doublescan mode not supported) (II) intel(0): Not using default mode "800x600" (doublescan mode not supported) (II) intel(0): Not using default mode "896x672" (doublescan mode not supported) (II) intel(0): Not using default mode "928x696" (doublescan mode not supported) (II) intel(0): Not using default mode "960x720" (doublescan mode not supported) (II) intel(0): Not using default mode "576x432" (doublescan mode not supported) (II) intel(0): Not using default mode "680x384" (doublescan mode not supported) (II) intel(0): Not using default mode "680x384" (doublescan mode not supported) (II) intel(0): Not using default mode "700x525" (doublescan mode not supported) (II) intel(0): Not using default mode "720x450" (doublescan mode not supported) (II) intel(0): Not using default mode "800x512" (doublescan mode not supported) (II) intel(0): Not using default mode "840x525" (doublescan mode not supported) (II) intel(0): Not using default mode "840x525" (doublescan mode not supported) (II) intel(0): Not using default mode "960x540" (doublescan mode not supported) (II) intel(0): Not using default mode "960x600" (doublescan mode not supported) (II) intel(0): Not using default mode "1024x768" (doublescan mode not supported) (II) intel(0): Printing probed modes for output LVDS1 (II) intel(0): Modeline "1680x1050"x60.1 122.00 1680 1712 1776 1904 1050 1051 1054 1066 -hsync -vsync (64.1 kHz) (II) intel(0): Modeline "1680x1050"x60.0 146.25 1680 1784 1960 2240 1050 1053 1059 1089 -hsync +vsync (65.3 kHz) (II) intel(0): Modeline "1680x1050"x59.9 119.00 1680 1728 1760 1840 1050 1053 1059 1080 +hsync -vsync (64.7 kHz) (II) intel(0): Modeline "1680x1050"x50.1 101.67 1680 1712 1776 1904 1050 1051 1054 1066 -hsync -vsync (53.4 kHz) (II) intel(0): Modeline "1600x1024"x60.2 103.12 1600 1600 1656 1664 1024 1024 1029 1030 +hsync +vsync (62.0 kHz) (II) intel(0): Modeline "1400x1050"x60.0 122.00 1400 1488 1640 1880 1050 1052 1064 1082 +hsync +vsync (64.9 kHz) (II) intel(0): Modeline "1280x1024"x60.0 108.00 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync (64.0 kHz) (II) intel(0): Modeline "1440x900"x59.9 106.50 1440 1520 1672 1904 900 903 909 934 -hsync +vsync (55.9 kHz) (II) intel(0): Modeline "1280x960"x60.0 108.00 1280 1376 1488 1800 960 961 964 1000 +hsync +vsync (60.0 kHz) (II) intel(0): Modeline "1360x768"x59.8 84.75 1360 1432 1568 1776 768 771 781 798 -hsync +vsync (47.7 kHz) (II) intel(0): Modeline "1360x768"x60.0 72.00 1360 1408 1440 1520 768 771 781 790 +hsync -vsync (47.4 kHz) (II) intel(0): Modeline "1152x864"x60.0 81.62 1152 1216 1336 1520 864 865 868 895 -hsync +vsync (53.7 kHz) (II) intel(0): Modeline "1024x768"x60.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz) (II) intel(0): Modeline "800x600"x60.3 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync (37.9 kHz) (II) intel(0): Modeline "800x600"x56.2 36.00 800 824 896 1024 600 601 603 625 +hsync +vsync (35.2 kHz) (II) intel(0): Modeline "640x480"x59.9 25.18 640 656 752 800 480 490 492 525 -hsync -vsync (31.5 kHz) (II) intel(0): EDID for output DVI1 (II) intel(0): Output VGA1 disconnected (II) intel(0): Output LVDS1 connected (II) intel(0): Output DVI1 disconnected (II) intel(0): Using exact sizes for initial modes (II) intel(0): Output LVDS1 using initial mode 1680x1050 (II) intel(0): Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated. (==) intel(0): DPI set to (96, 96) (II) Loading sub module "fb" (II) LoadModule: "fb" (II) Loading /usr/lib/xorg/modules/libfb.so (II) Module fb: vendor="X.Org Foundation" compiled for 1.7.7, module version = 1.0.0 ABI class: X.Org ANSI C Emulation, version 0.4 (II) UnloadModule: "vesa" (II) Unloading /usr/lib/xorg/modules/drivers/vesa_drv.so (II) UnloadModule: "fbdev" (II) Unloading /usr/lib/xorg/modules/drivers/fbdev_drv.so (II) UnloadModule: "fbdevhw" (II) Unloading /usr/lib/xorg/modules/linux/libfbdevhw.so (==) Depth 24 pixmap format is 32 bpp (II) intel(0): [DRI2] Setup complete (**) intel(0): Tiling enabled (**) intel(0): SwapBuffers wait enabled (==) intel(0): VideoRam: 262144 KB (II) intel(0): Allocated new frame buffer 1728x1050 stride 8192, tiled (II) UXA(0): Driver registered support for the following operations: (II) solid (II) copy (II) composite (RENDER acceleration) (II) put_image (II) get_image (==) intel(0): Backing store disabled (==) intel(0): Silken mouse enabled (II) intel(0): Initializing HW Cursor (II) intel(0): RandR 1.2 enabled, ignore the following RandR disabled message. (==) intel(0): DPMS enabled (==) intel(0): Intel XvMC decoder disabled (II) intel(0): Set up textured video (II) intel(0): direct rendering: DRI2 Enabled (--) RandR disabled (II) Initializing built-in extension Generic Event Extension (II) Initializing built-in extension SHAPE (II) Initializing built-in extension MIT-SHM (II) Initializing built-in extension XInputExtension (II) Initializing built-in extension XTEST (II) Initializing built-in extension BIG-REQUESTS (II) Initializing built-in extension SYNC (II) Initializing built-in extension XKEYBOARD (II) Initializing built-in extension XC-MISC (II) Initializing built-in extension XINERAMA (II) Initializing built-in extension XFIXES (II) Initializing built-in extension RENDER (II) Initializing built-in extension RANDR (II) Initializing built-in extension COMPOSITE (II) Initializing built-in extension DAMAGE SELinux: Disabled on system, not enabling in X server (II) AIGLX: enabled GLX_MESA_copy_sub_buffer (II) AIGLX: enabled GLX_SGI_make_current_read (II) AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects (II) AIGLX: Loaded and initialized /usr/lib/dri/i915_dri.so (II) GLX: Initialized DRI2 GL provider for screen 0 (II) intel(0): Setting screen physical size to 444 x 277 (II) config/udev: Adding input device Power Button (/dev/input/event4) (**) Power Button: Applying InputClass "evdev keyboard catchall" (II) LoadModule: "evdev" (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so (II) Module evdev: vendor="X.Org Foundation" compiled for 1.7.6.901, module version = 2.3.2 Module class: X.Org XInput Driver ABI class: X.Org XInput driver, version 7.0 (**) Power Button: always reports core events (**) Power Button: Device: "/dev/input/event4" (II) Power Button: Found keys (II) Power Button: Configuring as keyboard (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc104" (**) Option "xkb_layout" "us" (II) config/udev: Adding input device Video Bus (/dev/input/event5) (**) Video Bus: Applying InputClass "evdev keyboard catchall" (**) Video Bus: always reports core events (**) Video Bus: Device: "/dev/input/event5" (II) Video Bus: Found keys (II) Video Bus: Configuring as keyboard (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc104" (**) Option "xkb_layout" "us" (II) config/udev: Adding input device Lid Switch (/dev/input/event2) (II) No input driver/identifier specified (ignoring) (II) config/udev: Adding input device Sleep Button (/dev/input/event3) (**) Sleep Button: Applying InputClass "evdev keyboard catchall" (**) Sleep Button: always reports core events (**) Sleep Button: Device: "/dev/input/event3" (II) Sleep Button: Found keys (II) Sleep Button: Configuring as keyboard (II) XINPUT: Adding extended input device "Sleep Button" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc104" (**) Option "xkb_layout" "us" (II) config/udev: Adding input device HDA Digital PCBeep (/dev/input/event10) (II) No input driver/identifier specified (ignoring) (II) config/udev: Adding input device Logitech USB Optical Mouse (/dev/input/event9) (**) Logitech USB Optical Mouse: Applying InputClass "evdev pointer catchall" (**) Logitech USB Optical Mouse: always reports core events (**) Logitech USB Optical Mouse: Device: "/dev/input/event9" (II) Logitech USB Optical Mouse: Found 3 mouse buttons (II) Logitech USB Optical Mouse: Found scroll wheel(s) (II) Logitech USB Optical Mouse: Found relative axes (II) Logitech USB Optical Mouse: Found x and y relative axes (II) Logitech USB Optical Mouse: Configuring as mouse (**) Logitech USB Optical Mouse: YAxisMapping: buttons 4 and 5 (**) Logitech USB Optical Mouse: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200 (II) XINPUT: Adding extended input device "Logitech USB Optical Mouse" (type: MOUSE) (II) Logitech USB Optical Mouse: initialized for relative axes. (II) config/udev: Adding input device Logitech USB Optical Mouse (/dev/input/mouse1) (II) No input driver/identifier specified (ignoring) (II) config/udev: Adding input device Microsoft LifeCam VX-5000 (/dev/input/event8) (**) Microsoft LifeCam VX-5000: Applying InputClass "evdev keyboard catchall" (**) Microsoft LifeCam VX-5000: always reports core events (**) Microsoft LifeCam VX-5000: Device: "/dev/input/event8" (II) Microsoft LifeCam VX-5000: Found keys (II) Microsoft LifeCam VX-5000: Configuring as keyboard (II) XINPUT: Adding extended input device "Microsoft LifeCam VX-5000" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc104" (**) Option "xkb_layout" "us" (II) config/udev: Adding input device hdaps (/dev/input/event12) (II) No input driver/identifier specified (ignoring) (II) config/udev: Adding input device hdaps (/dev/input/js0) (II) No input driver/identifier specified (ignoring) (II) config/udev: Adding input device AT Translated Set 2 keyboard (/dev/input/event0) (**) AT Translated Set 2 keyboard: Applying InputClass "evdev keyboard catchall" (**) AT Translated Set 2 keyboard: always reports core events (**) AT Translated Set 2 keyboard: Device: "/dev/input/event0" (II) AT Translated Set 2 keyboard: Found keys (II) AT Translated Set 2 keyboard: Configuring as keyboard (II) XINPUT: Adding extended input device "AT Translated Set 2 keyboard" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc104" (**) Option "xkb_layout" "us" (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event7) (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev touchpad catchall" (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad catchall" (II) LoadModule: "synaptics" (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so (II) Module synaptics: vendor="X.Org Foundation" compiled for 1.7.6.901, module version = 1.2.2 Module class: X.Org XInput Driver ABI class: X.Org XInput driver, version 7.0 (II) Synaptics touchpad driver version 1.2.2 (**) Option "Device" "/dev/input/event7" (II) SynPS/2 Synaptics TouchPad: x-axis range 1472 - 5472 (II) SynPS/2 Synaptics TouchPad: y-axis range 1408 - 4448 (II) SynPS/2 Synaptics TouchPad: pressure range 0 - 255 (II) SynPS/2 Synaptics TouchPad: finger width range 0 - 0 (II) SynPS/2 Synaptics TouchPad: buttons: left right middle double triple (--) SynPS/2 Synaptics TouchPad: touchpad found (**) SynPS/2 Synaptics TouchPad: always reports core events (II) XINPUT: Adding extended input device "SynPS/2 Synaptics TouchPad" (type: TOUCHPAD) (**) SynPS/2 Synaptics TouchPad: (accel) keeping acceleration scheme 1 (**) SynPS/2 Synaptics TouchPad: (accel) acceleration profile 0 (**) SynPS/2 Synaptics TouchPad: (accel) acceleration factor: 2.000 (**) SynPS/2 Synaptics TouchPad: (accel) acceleration threshold: 4 (--) SynPS/2 Synaptics TouchPad: touchpad found (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/mouse0) (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad catchall" (II) Synaptics touchpad driver version 1.2.2 SynPS/2 Synaptics TouchPad no synaptics event device found (**) Option "Device" "/dev/input/mouse0" Query no Synaptics: 6003C8 (--) SynPS/2 Synaptics TouchPad: no supported touchpad found (EE) SynPS/2 Synaptics TouchPad Unable to query/initialize Synaptics hardware. (EE) PreInit failed for input device "SynPS/2 Synaptics TouchPad" (II) UnloadModule: "synaptics" (II) config/udev: Adding input device PS/2 Generic Mouse (/dev/input/event11) (**) PS/2 Generic Mouse: Applying InputClass "evdev pointer catchall" (**) PS/2 Generic Mouse: always reports core events (**) PS/2 Generic Mouse: Device: "/dev/input/event11" (II) PS/2 Generic Mouse: Found 3 mouse buttons (II) PS/2 Generic Mouse: Found relative axes (II) PS/2 Generic Mouse: Found x and y relative axes (II) PS/2 Generic Mouse: Configuring as mouse (**) PS/2 Generic Mouse: YAxisMapping: buttons 4 and 5 (**) PS/2 Generic Mouse: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200 (II) XINPUT: Adding extended input device "PS/2 Generic Mouse" (type: MOUSE) (II) PS/2 Generic Mouse: initialized for relative axes. (II) config/udev: Adding input device PS/2 Generic Mouse (/dev/input/mouse2) (II) No input driver/identifier specified (ignoring) (II) config/udev: Adding input device PC Speaker (/dev/input/event1) (II) No input driver/identifier specified (ignoring) (II) config/udev: Adding input device ACPI Virtual Keyboard Device (/dev/input/event13) (**) ACPI Virtual Keyboard Device: Applying InputClass "evdev keyboard catchall" (**) ACPI Virtual Keyboard Device: always reports core events (**) ACPI Virtual Keyboard Device: Device: "/dev/input/event13" (II) ACPI Virtual Keyboard Device: Found keys (II) ACPI Virtual Keyboard Device: Configuring as keyboard (II) XINPUT: Adding extended input device "ACPI Virtual Keyboard Device" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc104" (**) Option "xkb_layout" "us" (II) config/udev: Adding input device ThinkPad Extra Buttons (/dev/input/event6) (**) ThinkPad Extra Buttons: Applying InputClass "evdev keyboard catchall" (**) ThinkPad Extra Buttons: always reports core events (**) ThinkPad Extra Buttons: Device: "/dev/input/event6" (II) ThinkPad Extra Buttons: Found keys (II) ThinkPad Extra Buttons: Configuring as keyboard (II) XINPUT: Adding extended input device "ThinkPad Extra Buttons" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc104" (**) Option "xkb_layout" "us" (II) intel(0): EDID vendor "IBM", prod id 10375 (II) intel(0): Printing DDC gathered Modelines: (II) intel(0): Modeline "1680x1050"x0.0 122.00 1680 1712 1776 1904 1050 1051 1054 1066 -hsync -vsync (64.1 kHz) (II) intel(0): Modeline "1680x1050"x0.0 101.67 1680 1712 1776 1904 1050 1051 1054 1066 -hsync -vsync (53.4 kHz) (II) intel(0): EDID vendor "IBM", prod id 10375 (II) intel(0): Printing DDC gathered Modelines: (II) intel(0): Modeline "1680x1050"x0.0 122.00 1680 1712 1776 1904 1050 1051 1054 1066 -hsync -vsync (64.1 kHz) (II) intel(0): Modeline "1680x1050"x0.0 101.67 1680 1712 1776 1904 1050 1051 1054 1066 -hsync -vsync (53.4 kHz) udev information: P: /devices/LNXSYSTM:00/LNXPWRBN:00/input/input4/event4 N: input/event4 S: char/13:68 E: UDEV_LOG=3 E: DEVPATH=/devices/LNXSYSTM:00/LNXPWRBN:00/input/input4/event4 E: SUBSYSTEM=input E: DEVNAME=input/event4 E: ID_INPUT=1 E: ID_INPUT_KEY=1 E: XKBMODEL=pc104 E: XKBLAYOUT=us E: MAJOR=13 E: MINOR=68 E: DEVLINKS=/dev/char/13:68 E: DMI_VENDOR=LENOVO P: /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input5/event5 N: input/event5 S: char/13:69 E: UDEV_LOG=3 E: DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input5/event5 E: SUBSYSTEM=input E: DEVNAME=input/event5 E: ID_INPUT=1 E: ID_INPUT_KEY=1 E: XKBMODEL=pc104 E: XKBLAYOUT=us E: MAJOR=13 E: MINOR=69 E: DEVLINKS=/dev/char/13:69 E: DMI_VENDOR=LENOVO P: /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input2/event2 N: input/event2 S: char/13:66 E: UDEV_LOG=3 E: DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input2/event2 E: SUBSYSTEM=input E: DEVNAME=input/event2 E: ID_INPUT=1 E: DMI_VENDOR=LENOVO E: MAJOR=13 E: MINOR=66 E: DEVLINKS=/dev/char/13:66 P: /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input3/event3 N: input/event3 S: char/13:67 E: UDEV_LOG=3 E: DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input3/event3 E: SUBSYSTEM=input E: DEVNAME=input/event3 E: ID_INPUT=1 E: ID_INPUT_KEY=1 E: XKBMODEL=pc104 E: XKBLAYOUT=us E: MAJOR=13 E: MINOR=67 E: DEVLINKS=/dev/char/13:67 E: DMI_VENDOR=LENOVO P: /devices/pci0000:00/0000:00:1b.0/input/input10/event10 N: input/event10 S: char/13:74 E: UDEV_LOG=3 E: DEVPATH=/devices/pci0000:00/0000:00:1b.0/input/input10/event10 E: SUBSYSTEM=input E: DEVNAME=input/event10 E: ID_INPUT=1 E: ID_PATH=pci-0000:00:1b.0 E: DMI_VENDOR=LENOVO E: MAJOR=13 E: MINOR=74 E: DEVLINKS=/dev/char/13:74 P: /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/input/input9/event9 N: input/event9 S: char/13:73 S: input/by-id/usb-Logitech_USB_Optical_Mouse-event-mouse S: input/by-path/pci-0000:00:1d.0-usb-0:1:1.0-event-mouse E: UDEV_LOG=3 E: DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/input/input9/event9 E: SUBSYSTEM=input E: DEVNAME=input/event9 E: ID_INPUT=1 E: ID_INPUT_MOUSE=1 E: ID_VENDOR=Logitech E: ID_VENDOR_ENC=Logitech E: ID_VENDOR_ID=046d E: ID_MODEL=USB_Optical_Mouse E: ID_MODEL_ENC=USB\x20Optical\x20Mouse E: ID_MODEL_ID=c018 E: ID_REVISION=4301 E: ID_SERIAL=Logitech_USB_Optical_Mouse E: ID_TYPE=hid E: ID_BUS=usb E: ID_USB_INTERFACES=:030102: E: ID_USB_INTERFACE_NUM=00 E: ID_USB_DRIVER=usbhid E: ID_PATH=pci-0000:00:1d.0-usb-0:1:1.0 E: MAJOR=13 E: MINOR=73 E: DEVLINKS=/dev/char/13:73 /dev/input/by-id/usb-Logitech_USB_Optical_Mouse-event-mouse /dev/input/by-path/pci-0000:00:1d.0-usb-0:1:1.0-event-mouse P: /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/input/input9/mouse1 N: input/mouse1 S: char/13:33 S: input/by-id/usb-Logitech_USB_Optical_Mouse-mouse S: input/by-path/pci-0000:00:1d.0-usb-0:1:1.0-mouse E: UDEV_LOG=3 E: DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/input/input9/mouse1 E: SUBSYSTEM=input E: DEVNAME=input/mouse1 E: ID_INPUT=1 E: ID_INPUT_MOUSE=1 E: ID_VENDOR=Logitech E: ID_VENDOR_ENC=Logitech E: ID_VENDOR_ID=046d E: ID_MODEL=USB_Optical_Mouse E: ID_MODEL_ENC=USB\x20Optical\x20Mouse E: ID_MODEL_ID=c018 E: ID_REVISION=4301 E: ID_SERIAL=Logitech_USB_Optical_Mouse E: ID_TYPE=hid E: ID_BUS=usb E: ID_USB_INTERFACES=:030102: E: ID_USB_INTERFACE_NUM=00 E: ID_USB_DRIVER=usbhid E: ID_PATH=pci-0000:00:1d.0-usb-0:1:1.0 E: MAJOR=13 E: MINOR=33 E: DEVLINKS=/dev/char/13:33 /dev/input/by-id/usb-Logitech_USB_Optical_Mouse-mouse /dev/input/by-path/pci-0000:00:1d.0-usb-0:1:1.0-mouse P: /devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/input/input8/event8 N: input/event8 S: char/13:72 S: input/by-id/usb-Microsoft_Microsoft_LifeCam_VX-5000-event-if00 S: input/by-path/pci-0000:00:1d.7-usb-0:2:1.0-event E: UDEV_LOG=3 E: DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.0/input/input8/event8 E: SUBSYSTEM=input E: DEVNAME=input/event8 E: ID_INPUT=1 E: ID_INPUT_KEY=1 E: ID_VENDOR=Microsoft E: ID_VENDOR_ENC=Microsoft E: ID_VENDOR_ID=045e E: ID_MODEL=Microsoft_LifeCam_VX-5000 E: ID_MODEL_ENC=Microsoft\x20LifeCam\x20VX-5000 E: ID_MODEL_ID=0728 E: ID_REVISION=0100 E: ID_SERIAL=Microsoft_Microsoft_LifeCam_VX-5000 E: ID_TYPE=video E: ID_BUS=usb E: ID_USB_INTERFACES=:0e0100:0e0200:010100:010200: E: ID_USB_INTERFACE_NUM=00 E: ID_USB_DRIVER=uvcvideo E: ID_PATH=pci-0000:00:1d.7-usb-0:2:1.0 E: XKBMODEL=pc104 E: XKBLAYOUT=us E: MAJOR=13 E: MINOR=72 E: DEVLINKS=/dev/char/13:72 /dev/input/by-id/usb-Microsoft_Microsoft_LifeCam_VX-5000-event-if00 /dev/input/by-path/pci-0000:00:1d.7-usb-0:2:1.0-event P: /devices/platform/hdaps/input/input12/event12 N: input/event12 S: char/13:76 S: input/by-path/platform-hdaps-event E: UDEV_LOG=3 E: DEVPATH=/devices/platform/hdaps/input/input12/event12 E: SUBSYSTEM=input E: DEVNAME=input/event12 E: ID_INPUT=1 E: ID_PATH=platform-hdaps E: DMI_VENDOR=LENOVO E: MAJOR=13 E: MINOR=76 E: DEVLINKS=/dev/char/13:76 /dev/input/by-path/platform-hdaps-event P: /devices/platform/hdaps/input/input12/js0 N: input/js0 S: char/13:0 E: UDEV_LOG=3 E: DEVPATH=/devices/platform/hdaps/input/input12/js0 E: SUBSYSTEM=input E: DEVNAME=input/js0 E: ID_INPUT=1 E: ID_PATH=platform-hdaps E: MAJOR=13 E: MINOR=0 E: DEVLINKS=/dev/char/13:0 P: /devices/platform/i8042/serio0/input/input0/event0 N: input/event0 S: char/13:64 S: input/by-path/platform-i8042-serio-0-event-kbd E: UDEV_LOG=3 E: DEVPATH=/devices/platform/i8042/serio0/input/input0/event0 E: SUBSYSTEM=input E: DEVNAME=input/event0 E: ID_INPUT=1 E: ID_INPUT_KEY=1 E: ID_INPUT_KEYBOARD=1 E: ID_SERIAL=noserial E: ID_PATH=platform-i8042-serio-0 E: XKBMODEL=pc104 E: XKBLAYOUT=us E: MAJOR=13 E: MINOR=64 E: DEVLINKS=/dev/char/13:64 /dev/input/by-path/platform-i8042-serio-0-event-kbd E: DMI_VENDOR=LENOVO P: /devices/platform/i8042/serio1/input/input7/event7 N: input/event7 S: char/13:71 S: input/by-path/platform-i8042-serio-1-event-mouse E: UDEV_LOG=3 E: DEVPATH=/devices/platform/i8042/serio1/input/input7/event7 E: SUBSYSTEM=input E: DEVNAME=input/event7 E: ID_INPUT=1 E: ID_INPUT_TOUCHPAD=1 E: ID_SERIAL=noserial E: ID_PATH=platform-i8042-serio-1 E: DMI_VENDOR=LENOVO E: MAJOR=13 E: MINOR=71 E: DEVLINKS=/dev/char/13:71 /dev/input/by-path/platform-i8042-serio-1-event-mouse P: /devices/platform/i8042/serio1/input/input7/mouse0 N: input/mouse0 S: char/13:32 S: input/by-path/platform-i8042-serio-1-mouse E: UDEV_LOG=3 E: DEVPATH=/devices/platform/i8042/serio1/input/input7/mouse0 E: SUBSYSTEM=input E: DEVNAME=input/mouse0 E: ID_INPUT=1 E: ID_INPUT_TOUCHPAD=1 E: ID_SERIAL=noserial E: ID_PATH=platform-i8042-serio-1 E: MAJOR=13 E: MINOR=32 E: DEVLINKS=/dev/char/13:32 /dev/input/by-path/platform-i8042-serio-1-mouse P: /devices/platform/i8042/serio1/serio2/input/input11/event11 N: input/event11 S: char/13:75 S: input/by-path/platform-i8042-serio-2-event-mouse E: UDEV_LOG=3 E: DEVPATH=/devices/platform/i8042/serio1/serio2/input/input11/event11 E: SUBSYSTEM=input E: DEVNAME=input/event11 E: ID_INPUT=1 E: ID_INPUT_MOUSE=1 E: ID_SERIAL=noserial E: ID_PATH=platform-i8042-serio-2 E: DMI_VENDOR=LENOVO E: MAJOR=13 E: MINOR=75 E: DEVLINKS=/dev/char/13:75 /dev/input/by-path/platform-i8042-serio-2-event-mouse P: /devices/platform/i8042/serio1/serio2/input/input11/mouse2 N: input/mouse2 S: char/13:34 S: input/by-path/platform-i8042-serio-2-mouse E: UDEV_LOG=3 E: DEVPATH=/devices/platform/i8042/serio1/serio2/input/input11/mouse2 E: SUBSYSTEM=input E: DEVNAME=input/mouse2 E: ID_INPUT=1 E: ID_INPUT_MOUSE=1 E: ID_SERIAL=noserial E: ID_PATH=platform-i8042-serio-2 E: MAJOR=13 E: MINOR=34 E: DEVLINKS=/dev/char/13:34 /dev/input/by-path/platform-i8042-serio-2-mouse P: /devices/platform/pcspkr/input/input1/event1 N: input/event1 S: char/13:65 S: input/by-path/platform-pcspkr-event-spkr E: UDEV_LOG=3 E: DEVPATH=/devices/platform/pcspkr/input/input1/event1 E: SUBSYSTEM=input E: DEVNAME=input/event1 E: ID_INPUT=1 E: ID_SERIAL=noserial E: ID_PATH=platform-pcspkr E: DMI_VENDOR=LENOVO E: MAJOR=13 E: MINOR=65 E: DEVLINKS=/dev/char/13:65 /dev/input/by-path/platform-pcspkr-event-spkr P: /devices/virtual/input/input13/event13 N: input/event13 S: char/13:77 E: UDEV_LOG=3 E: DEVPATH=/devices/virtual/input/input13/event13 E: SUBSYSTEM=input E: DEVNAME=input/event13 E: ID_INPUT=1 E: ID_INPUT_KEY=1 E: ID_INPUT_KEYBOARD=1 E: ID_SERIAL=noserial E: XKBMODEL=pc104 E: XKBLAYOUT=us E: MAJOR=13 E: MINOR=77 E: DEVLINKS=/dev/char/13:77 E: DMI_VENDOR=LENOVO P: /devices/virtual/input/input6/event6 N: input/event6 S: char/13:70 E: UDEV_LOG=3 E: DEVPATH=/devices/virtual/input/input6/event6 E: SUBSYSTEM=input E: DEVNAME=input/event6 E: ID_INPUT=1 E: ID_INPUT_KEY=1 E: XKBMODEL=pc104 E: XKBLAYOUT=us E: MAJOR=13 E: MINOR=70 E: DEVLINKS=/dev/char/13:70 E: DMI_VENDOR=LENOVO DRM Information from dmesg: [ 6.385574] Linux agpgart interface v0.103 [ 6.720855] agpgart-intel 0000:00:00.0: Intel 945GM Chipset [ 6.722072] agpgart-intel 0000:00:00.0: detected 7932K stolen memory [ 6.725401] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xd0000000 [ 7.540498] [drm] Initialized drm 1.1.0 20060810 [ 8.023510] [drm] set up 7M of stolen space [ 9.075889] [drm] LVDS-8: set mode 1680x1050 c [ 9.124567] fb0: inteldrmfb frame buffer device [ 9.124578] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 -- System Information: Debian Release: squeeze/sid APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: i386 (i686) Kernel: Linux 2.6.32-trunk-686 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages xserver-xorg-video-intel depends on: ii libc6 2.11.2-5 Embedded GNU C Library: Shared lib ii libdrm-intel1 2.4.21-1~squeeze2 Userspace interface to intel-speci ii libdrm2 2.4.21-1~squeeze2 Userspace interface to kernel DRM ii libpciaccess0 0.12.0-1 Generic PCI access library for X ii libx11-6 2:1.3.3-3 X11 client-side library ii libx11-xcb1 2:1.3.3-3 Xlib/XCB interface library ii libxcb-aux0 0.3.6-1 utility libraries for X C Binding ii libxcb-dri2-0 1.6-1 X C Binding, dri2 extension ii libxcb1 1.6-1 X C Binding ii libxext6 2:1.1.2-1 X11 miscellaneous extension librar ii libxfixes3 1:4.0.5-1 X11 miscellaneous 'fixes' extensio ii libxv1 2:1.0.5-1 X11 Video extension library ii libxvmc1 2:1.0.5-1 X11 Video extension library ii xserver-xorg-core [xor 2:1.7.7-6 Xorg X server - core server xserver-xorg-video-intel recommends no packages. xserver-xorg-video-intel suggests no packages. -- no debconf information -- Carlo U. Segre -- Professor of Physics Associate Dean for Graduate Admissions, Graduate College Illinois Institute of Technology Voice: 312.567.3498 Fax: 312.567.3494 segre@iit.edu http://www.iit.edu/~segre segre@debian.org
Created attachment 39095 [details] example of xmgrace self-corruption
Looks like an off-by-one computation in the damage region. Can you try the most recent xserver? (What's in experimental currently?) Hmm, I thought I heard such a bug discussed but can't see any pertinent commits. In which case the issue may be the driver not causing damage for itself (or rather the xserver failing to wrap an entry point and track damage...). Anyway can you verify that the current xserver is similarly broken? Does xfce4 wm perform compositing? Does that make a difference?
I'm using openbox wm with no composting. I have bisected it down to the following pair of consecutive commits. My test case is moving a qiv window displaying an image over top of a lucid emacs window. I cannot perform this test on the earlier of the two commits listed because opening emacs crashes the xserver in this case. commit a2aa4c23f65b03c389c2ba8eac0298dfb205e67d Author: Dave Airlie <airlied@redhat.com> Date: Mon Jul 5 14:02:42 2010 +1000 uxa: oops typo in previous commit commit feff2ec80eeeba5074d19efcddf4867adf639b4f Author: Dave Airlie <airlied@redhat.com> Date: Mon Jul 5 09:07:08 2010 +1000 uxa: don't compare planemask with FB_ALLONES. planemask is an unsigned long initialised to ~0, on 64-bit this is not equal to an (unsigned int)-1. Use the macro provided to do this. Signed-off-by: Dave Airlie <airlied@redhat.com>
Now that was a result I wasn't expecting. Hmm.
I'm seeing the same kind of problem, but with nedit and xpdf. However, nedit rebuilt against current openmotif (rather than lesstif) doesn't display this issue. I'm using: GM45 chipset / x86_64 arch xorg-x11-drv-intel 2.13.0 xorg-x11-server-Xorg 1.9.1-2.fc14 mesa 7.9 libdrm 2.4.22 kernel 2.6.36
Just to be sure, can you retest with commit e0066e77e026b0dd0daa0c3765473c7d63aa6753 Author: Eric Anholt <eric@anholt.net> Date: Tue May 31 23:17:16 2011 -0700 uxa: Simplify Composite solid acceleration for spans by only clipping once.
Actually, I'm going to close this one fixed, because I'm confident enough based on the original report that the bug I deleted was the one described here.
Great, that fixes it. Thanks for all the hard work!
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.