| Summary: | [915 drm] syncs to wrong refresh rate | ||||||
|---|---|---|---|---|---|---|---|
| Product: | xorg | Reporter: | Lorenzo Colitti <lorenzo> | ||||
| Component: | Driver/intel | Assignee: | Eric Anholt <eric> | ||||
| Status: | RESOLVED FIXED | QA Contact: | Robert Luciani <rluciani> | ||||
| Severity: | normal | ||||||
| Priority: | medium | ||||||
| Version: | 7.2 (2007.02) | ||||||
| Hardware: | Other | ||||||
| OS: | Linux (All) | ||||||
| Whiteboard: | |||||||
| i915 platform: | i915 features: | ||||||
| Bug Depends on: | |||||||
| Bug Blocks: | 13027 | ||||||
| Attachments: |
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What does xrandr 1.2 or newer say with the intel driver? Would be great if you could also provide the stderr output of GL apps with the 'Mesa debugging output' patch from bug 10542. $ git clone git://anongit.freedesktop.org/git/xorg/app/xrandr ; cd xrandr ; ./autogen.sh ; make [...] $ ./xrandr --version Server reports RandR version 1.1 $ ./xrandr SZ: Pixels Physical Refresh *0 1024 x 768 ( 347mm x 347mm ) *50 60 40 1 800 x 600 ( 347mm x 347mm ) 60 2 640 x 480 ( 347mm x 347mm ) 60 3 1024 x 1024 ( 347mm x 347mm ) 50 Current rotation - normal Current reflection - none Rotations possible - normal left inverted right Reflections possible - none I have the same problem as you, 60Hz refresh rate, but my graphics still end up tearing both in 3d and 2d. Here is what xrandr and glxgears say: *0 1280 x 800 ( 339mm x 339mm ) *60 85 75 70 1 1280 x 768 ( 339mm x 339mm ) 85 75 70 60 2 1280 x 720 ( 339mm x 339mm ) 85 75 70 60 3 1152 x 768 ( 339mm x 339mm ) 55 4 1024 x 768 ( 339mm x 339mm ) 85 75 70 60 5 832 x 624 ( 339mm x 339mm ) 75 6 800 x 600 ( 339mm x 339mm ) 85 72 75 60 56 7 640 x 480 ( 339mm x 339mm ) 85 73 75 60 8 720 x 400 ( 339mm x 339mm ) 85 9 640 x 400 ( 339mm x 339mm ) 85 10 640 x 350 ( 339mm x 339mm ) 85 11 1280 x 1280 ( 339mm x 339mm ) 60 Current rotation - normal Current reflection - none Rotations possible - normal left inverted right Reflections possible - none -(r3tex)-% vblank_mode=3 glxgears ATTENTION: default value of option vblank_mode overridden by environment. libGL warning: 3D driver claims to not support visual 0x5b 296 frames in 5.0 seconds = 59.191 FPS 295 frames in 5.0 seconds = 59.000 FPS 295 frames in 5.0 seconds = 58.859 FPS 295 frames in 5.0 seconds = 58.953 FPS 295 frames in 5.0 seconds = 58.953 FPS (In reply to comment #3) > I have the same problem as you, 60Hz refresh rate, but my graphics still end up > tearing both in 3d With all apps or only some? > and 2d. That's expected at this point. As your servers don't seem to support RandR 1.2, please attach (as opposed to paste) full X log files. Created attachment 10055 [details]
My xorg log file.
All applications tear, always. GLX gears can, without vsync enabled, get over 1000FPS so that shouldn't be a problem. I'm running the Arch Linux distribution with xorg 7.2 The xserver has a number of patches, which I suppose I could rebuild if necessary: http://www.archlinux.org/packages/10337/ Allright, with xorg-server 1.3, big windows move as fast as molasses, xrander 1.2 reports: Screen 0: minimum 320 x 200, current 1280 x 800, maximum 1280 x 1280 VGA disconnected (normal left inverted right) LVDS connected 1280x800+0+0 (normal left inverted right) 0mm x 0mm 1280x800 59.9*+ 1152x768 54.8 1024x768 85.0 75.0 70.1 60.0 832x624 74.6 800x600 85.1 72.2 75.0 60.3 56.2 640x480 85.0 72.8 75.0 59.9 720x400 85.0 640x400 85.1 640x350 85.1 TV disconnected (normal left inverted right) This should be working now (I've been testing it a lot lately). Can you try again with the latest released bits? I'm closing it. Please reopen if you still this issue with the new driver (2.2 or git tip). |
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If I use driconf to enable sync to vblank, the driver seems to sync to the wrong refresh rate. With vsync disabled, gxgears gets ~600 FPS, and with vsync enabled it gets almost exactly 50 FPS: $ glxgears 252 frames in 5.0 seconds = 50.250 FPS 250 frames in 5.0 seconds = 49.880 FPS 250 frames in 5.0 seconds = 49.880 FPS 250 frames in 5.0 seconds = 49.880 FPS 250 frames in 5.0 seconds = 49.864 FPS Which would be fine, except I'm pretty sure my laptop's LCD panel refreshes at 60 Hz, not 50 Hz. This is using X.org 7.2.0 and both xorg-video-i810 1.7.4 and xorg-video-intel version 1.9.94, both from stock Ubuntu Feisty. Strace shows they are both loading i915_dri.so (Ubuntu doesn't include a new enough DRM to use i915tex_dri.so). Interestingly, with xorg-video-i810 xrandr reports only a 60 Hz refresh rate, while xorg-video-intel reports 50, 60 and 40 (with 50 selected). If I use xorg-video-intel set to 50 Hz and enable vsync, I still see tearing, so I assume that everything is in fact synced to 50 Hz but the panel is doing 60. If on the other hand I set refresh to 60, glxgears shows it's syncing to 50 FPS. My Device and Monitor sections look like this: Section "Device" Identifier "Intel Corporation Mobile Integrated Graphics Controller" Driver "i810" Option "MonitorLayout" "CRT,LFP" Option "DevicePresence" "true" Option "XAANoOffScreenPixmaps" EndSection Section "Monitor" Identifier "Generic Monitor" Option "DPMS" EndSection