Comment 301 for bug 973096

Another confirmation..

Hi, i have a similar problem that has been present since a couple of months with various driver versions, and i finally made it dissapear with nvidia-current-updates a month ago, and it worked just fine until today.

System info: Intel i7 2500k
8GB Ram
Intel SSD
Gfx: 01:00.0 VGA compatible controller: NVIDIA Corporation GF114 [GeForce GTX 560] (rev a1)
Ubuntu 12.04 LTS

Kernel: # uname -a
Linux trillian 3.2.0-35-generic #55-Ubuntu SMP Wed Dec 5 17:42:16 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

Driver: # dpkg -l | grep nvidia-current
ii nvidia-current 295.40-0ubuntu1.1 NVIDIA binary Xorg driver, kernel module and VDPAU library
ii nvidia-current-updates 304.43-0ubuntu0.1 NVIDIA binary Xorg driver, kernel module and VDPAU library

Previous problems experienced as described on this page: http://www.playtool.com/pages/artifacts/artifacts.html
Issue list: Bus Artifacts, Video RAM artifacts
Hard lockups
Firefox at 120% CPU
[migration/d] at 100% CPU (Multiple processes)

Current problems
Desktop Un-responsive, no action on input, eithier with keyboard or mouse
Black Screen with no mouse pointer
Firefox at 120% CPU
[migration/d] at 100% CPU (Multiple processes)
Possible to recover system via SSH to kill firefox which restarts lightdm and kills the session.
When logging in again, the same issue occures and this time i did a soft reboot via SSH "$ sudo reboot".
No lockups for a while now, but still waiting..

# tail -f x-0.log:
[mi] EQ overflowing. Additional events will be discarded until existing events are processed.

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x26) [0x7f87d62be876]
1: /usr/bin/X (mieqEnqueue+0x263) [0x7f87d629ef53]
2: /usr/bin/X (0x7f87d6136000+0x62a34) [0x7f87d6198a34]
3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f87cdb77000+0x5d88) [0x7f87cdb7cd88]
4: /usr/bin/X (0x7f87d6136000+0x8af37) [0x7f87d61c0f37]
5: /usr/bin/X (0x7f87d6136000+0xb0d1a) [0x7f87d61e6d1a]
6: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f87d545c000+0xfcb0) [0x7f87d546bcb0]
7: /lib/x86_64-linux-gnu/libc.so.6 (nanosleep+0x10) [0x7f87d438b820]
8: /lib/x86_64-linux-gnu/libc.so.6 (usleep+0x34) [0x7f87d43b9774]
9: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7f87cf0b6000+0x49942d) [0x7f87cf54f42d]
10: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7f87cf0b6000+0x4996d6) [0x7f87cf54f6d6]
11: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7f87cf0b6000+0x4999a5) [0x7f87cf54f9a5]
12: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7f87cf0b6000+0x4999cc) [0x7f87cf54f9cc]
13: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7f87cf0b6000+0x49b7b6) [0x7f87cf5517b6]
14: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7f87cf0b6000+0x4a6425) [0x7f87cf55c425]
15: /usr/bin/X (0x7f87d6136000+0x4e8a1) [0x7f87d61848a1]
16: /usr/bin/X (0x7f87d6136000+0x3d7ba) [0x7f87d61737ba]
17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7f87d42ed76d]
18: /usr/bin/X (0x7f87d6136000+0x3daad) [0x7f87d6173aad]
[mi] These backtraces from mieqEnqueue may point to a culprit higher up the stack.
[mi] mieq is *NOT* the cause. It is a victim.
[mi] Increasing EQ size to 512 to prevent dropped events.
[mi] EQ processing has resumed after 67 dropped events.
[mi] This may be caused my a misbehaving driver monopolizing the server's resources.
^C
root@trillian:/var/log/lightdm# tail -f x-0.log
14: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7f87cf0b6000+0x4a6425) [0x7f87cf55c425]
15: /usr/bin/X (0x7f87d6136000+0x4e8a1) [0x7f87d61848a1]
16: /usr/bin/X (0x7f87d6136000+0x3d7ba) [0x7f87d61737ba]
17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7f87d42ed76d]
18: /usr/bin/X (0x7f87d6136000+0x3daad) [0x7f87d6173aad]
[mi] These backtraces from mieqEnqueue may point to a culprit higher up the stack.
[mi] mieq is *NOT* the cause. It is a victim.
[mi] Increasing EQ size to 512 to prevent dropped events.
[mi] EQ processing has resumed after 67 dropped events.
[mi] This may be caused my a misbehaving driver monopolizing the server's resources.