Bug 20147

Summary: [865] X uses 100% cpu on start, unresponsive
Product: xorg Reporter: Orion Poplawski <orion>
Component: Driver/intelAssignee: Wang Zhenyu <zhenyu.z.wang>
Status: RESOLVED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
Xorg log
none
X strace none

Description Orion Poplawski 2009-02-16 14:13:09 UTC
Created attachment 23001 [details]
Xorg log

xorg-x11-drv-i810-2.5.0-4.fc10.i386
xorg-x11-server-Xorg-1.5.3-13.fc10.i386
libdrm-2.4.0-0.21.fc10.i386
mesa-libGL-7.2-0.15.fc10.i386

On startup X begins to takes 100% cpu and is unresponsive except that the X cursor moves with the mouse.

[root@machias X11]# grep -E 'EE|WW' /var/log/Xorg.0.log
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(EE) Unable to locate/open config file
(II) Loading extension MIT-SCREEN-SAVER
(WW) Falling back to old probe method for fbdev
(EE) open /dev/fb0: No such file or directory
(WW) Falling back to old probe method for vesa
(WW) intel(0): libpciaccess reported 0 rom size, guessing 64kB
(WW) intel(0): Failed to allocate texture space.
(WW) intel(0): Failed to allocate texture space.
(WW) intel(0): PRB0_CTL (0x0001f001) indicates ring buffer enabled
(WW) intel(0): Existing errors found in hardware state.
(EE) AIGLX error: drmMap of framebuffer failed (Invalid argument)(EE) AIGLX: reverting to software rendering

This is with an empty xorg.conf.  Same result with AccellMethod set to XAA.

strace shows infinite loop:

--- SIGALRM (Alarm clock) @ 0 (0) ---
sigreturn()                             = ? (mask now [])
--- SIGALRM (Alarm clock) @ 0 (0) ---
sigreturn()                             = ? (mask now [])
Comment 1 Orion Poplawski 2009-02-16 14:20:21 UTC
Also, previously used the i810 driver on this machine because it allowed the use of 1600x1200 resolution with this monitor:

(II) I810(0): Attempting to use 75.00Hz refresh for mode "1600x1200" (85a)
(--) I810(0): Virtual size is 1600x1200 (pitch 2048)
(**) I810(0): *Built-in mode "1600x1200"
Comment 2 Orion Poplawski 2009-02-17 07:33:30 UTC
Better with:

xorg-x11-drv-i810-2.6.0-5.fc11.i386
xorg-x11-server-Xorg-1.5.99.902-12.fc11.i386
libdrm-2.4.4-4.fc11.i386
mesa-libGL-7.3-2.fc11.i386

Only error/warning messages now are:

(WW) Falling back to old probe method for vesa
(WW) Falling back to old probe method for fbdev
(WW) intel(0): Disabling Xv because the overlay register buffer allocation failed.

Although I am seeing 5.6-5.9% CPU for the X server just sitting at the log it screen.

Comment 3 Orion Poplawski 2009-02-17 07:34:34 UTC
Created attachment 23031 [details]
X strace

This seems to be the loop X is in as shown by strace.
Comment 4 Orion Poplawski 2009-02-18 08:26:00 UTC
Hmm, no cpu usage after today's fedora rawhide updates and a reboot.

As for the initial issue,  would it be possible for whatever fixed that issue to get backported to the 2.5 branch for possible inclusion into Fedora 10?
Comment 5 Wang Zhenyu 2009-03-04 01:07:26 UTC
Looks fixed. Close.

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