[Bug 286792] Re: Fatal server error: lockup

[Dimitry Andric]

I have the same "mieqEnqueue: infinite loop" error on intrepid, with
xserver-xorg-video-intel 2:2.4.1-1ubuntu10.  This only happens when
desktop effects (e.g. AIGLX) is turned on, and if the X server is
restarted twice (e.g. you login, do some stuff, logout and attempt to
login again).

There's a patch floating around to get a backtrace whenever the server
gets stuck.  In my case, this gives:

Backtrace:
0: /usr/X11R6/bin/X(xorg_backtrace+0x26) [0x4edc76]
1: /usr/X11R6/bin/X(mieqEnqueue+0x23f) [0x4ce5ff]
2: /usr/X11R6/bin/X(xf86PostMotionEventP+0xc4) [0x473654]
3: /usr/X11R6/bin/X(xf86PostMotionEvent+0xb1) [0x473831]
4: /usr/lib/xorg/modules/input//evdev_drv.so [0x7fd34fe6083f]
5: /usr/X11R6/bin/X [0x48fd45]
6: /usr/X11R6/bin/X [0x470267]
7: /lib/libpthread.so.0 [0x7fd3696860f0]
8: /lib/libc.so.6(ioctl+0x7) [0x7fd367ce8a17]
9: /usr/lib/libdrm.so.2(drmCommandWrite+0x1d) [0x7fd3668c4aed]
10: /usr/lib/dri/i915_dri.so(intelWaitIrq+0x60) [0x7fd355767d00]
11: /usr/lib/dri/i915_dri.so [0x7fd355764349]
12: /usr/lib/dri/i915_dri.so [0x7fd355744e0e]
13: /usr/lib/dri/i915_dri.so [0x7fd35574590d]
14: /usr/lib/dri/i915_dri.so [0x7fd355745bb0]
15: /usr/lib/dri/i915_dri.so(_intel_batchbuffer_flush+0xa7) [0x7fd35574d3d7]
16: /usr/lib/dri/i915_dri.so [0x7fd35576292f]
17: /usr/lib/dri/i915_dri.so(intelStartInlinePrimitive+0x2f) [0x7fd35577061f]
18: /usr/lib/dri/i915_dri.so [0x7fd35574bb40]
19: /usr/lib/dri/i915_dri.so [0x7fd35574b2a8]
20: /usr/lib/dri/i915_dri.so(_tnl_run_pipeline+0x15f) [0x7fd35580c3ef]
21: /usr/lib/dri/i915_dri.so [0x7fd3557702f4]
22: /usr/lib/dri/i915_dri.so(_tnl_draw_prims+0x4e0) [0x7fd35580c9b0]
23: /usr/lib/dri/i915_dri.so [0x7fd35580553e]
24: /usr/lib/xorg/modules/extensions//libglx.so [0x7fd3671185bd]
25: /usr/lib/xorg/modules/extensions//libglx.so [0x7fd367112a66]
26: /usr/lib/xorg/modules/extensions//libglx.so [0x7fd367116bd2]
27: /usr/X11R6/bin/X(Dispatch+0x364) [0x44d714]
28: /usr/X11R6/bin/X(main+0x45d) [0x43372d]
29: /lib/libc.so.6(__libc_start_main+0xe6) [0x7fd367c28466]
30: /usr/X11R6/bin/X [0x432b09]
[mi] mieqEnqueue: server stuck, please see backtrace above.
[mi] mieqEnqueue: server stuck, please see backtrace above.
[...endless, server is not responsive anymore...]

So what is going wrong here? :)

Please note, I have run this exact same box using hardy for a long time,
and never encountered any problem with X, even if you restart it dozens
of times.  I guess this must be some regression in either libdrm or the
intel driver...

-- 
Fatal server error: lockup
https://bugs.launchpad.net/bugs/286792
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