Public bug reported:
screen locks up with mouse cursor moving
Started somewhere around beta1.
In my case triggered reliaebly by running NX client (background or foreground)
but only to machines on LAN.
Unfortunelty problem was mis-identified by ubuntu-bug as an duplicate therefor
reported manually.
Detailed crash report attached
intel_gpu_top showed:
render busy: 70%:
bitsream busy: 100%
blitter busy: 100%
GAM: 100%:
No other tasks appeared and GPU got very hot.
Xorg.log tail:
[ 23313.122] [mi] EQ overflowing. Additional events will be discarded until
existing events are processed.
[ 23313.122]
Backtrace:
[ 23313.125] 0: /usr/bin/X (xorg_backtrace+0x37) [0xb7732627]
[ 23313.125] 1: /usr/bin/X (mieqEnqueue+0x223) [0xb7710973]
[ 23313.125] 2: /usr/bin/X (0xb75aa000+0x4cc25) [0xb75f6c25]
[ 23313.125] 3: /usr/bin/X (xf86PostMotionEventM+0xf9) [0xb7637d99]
[ 23313.125] 4: /usr/lib/xorg/modules/input/evdev_drv.so (0xb6a7d000+0x3c3d)
[0xb6a80c3d]
[ 23313.125] 5: /usr/lib/xorg/modules/input/evdev_drv.so (0xb6a7d000+0x524f)
[0xb6a8224f]
[ 23313.125] 6: /usr/bin/X (0xb75aa000+0x782b1) [0xb76222b1]
[ 23313.126] 7: /usr/bin/X (0xb75aa000+0x9fce8) [0xb7649ce8]
[ 23313.126] 8: (vdso) (__kernel_sigreturn+0x0) [0xb7587400]
[ 23313.126] 9: (vdso) (__kernel_vsyscall+0x10) [0xb7587424]
[ 23313.126] 10: /lib/i386-linux-gnu/libc.so.6 (ioctl+0x19) [0xb72d7869]
[ 23313.126] 11: /usr/lib/i386-linux-gnu/libdrm.so.2 (drmIoctl+0x34)
[0xb701a8c4]
[ 23313.126] 12: /usr/lib/i386-linux-gnu/libdrm_intel.so.1 (0xb6f94000+0x7665)
[0xb6f9b665]
[ 23313.126] 13: /usr/lib/i386-linux-gnu/libdrm_intel.so.1
(drm_intel_bo_mrb_exec+0x4a) [0xb6f961da]
[ 23313.126] 14: /usr/lib/xorg/modules/drivers/intel_drv.so
(0xb6fc8000+0x7e88) [0xb6fcfe88]
[ 23313.126] 15: /usr/lib/xorg/modules/drivers/intel_drv.so
(0xb6fc8000+0xe4cd) [0xb6fd64cd]
[ 23313.126] 16: /usr/lib/xorg/modules/drivers/intel_drv.so
(0xb6fc8000+0xfaee) [0xb6fd7aee]
[ 23313.126] 17: /usr/lib/xorg/modules/drivers/intel_drv.so
(0xb6fc8000+0x3212c) [0xb6ffa12c]
[ 23313.126] 18: /usr/bin/X (miCopyRegion+0x17c) [0xb770e81c]
[ 23313.126] 19: /usr/bin/X (miDoCopy+0x42f) [0xb770ed7f]
[ 23313.126] 20: /usr/lib/xorg/modules/drivers/intel_drv.so
(0xb6fc8000+0x32d26) [0xb6ffad26]
[ 23313.126] 21: /usr/bin/X (0xb75aa000+0x1107d2) [0xb76ba7d2]
[ 23313.126] 22: /usr/bin/X (0xb75aa000+0x33263) [0xb75dd263]
[ 23313.126] 23: /usr/bin/X (0xb75aa000+0x3786d) [0xb75e186d]
[ 23313.126] 24: /usr/bin/X (0xb75aa000+0x252aa) [0xb75cf2aa]
[ 23313.126] 25: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xf3)
[0xb720e4d3]
[ 23313.126] 26: /usr/bin/X (0xb75aa000+0x255e9) [0xb75cf5e9]
[ 23313.126] [mi] These backtraces from mieqEnqueue may point to a culprit
higher up the stack.
[ 23313.126] [mi] mieq is *NOT* the cause. It is a victim.
[ 23313.786] [mi] EQ overflow continuing. 100 events have been dropped.
[ 23313.786]
** Affects: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/988008
Title:
screen locks up with mouse cursor moving
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