X freezing with the message: EQ Overflowing

[pingveno]

My installation of Lucid occasionally freezes except for the cursor. I took a peek in /var/log/Xorg.0.log.old and found this error at the end:

[mi] EQ overflowing. The server is probably stuck in an infinite loop.

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x28) [0x4a3248]
1: /usr/bin/X (mieqEnqueue+0x1f4) [0x4a2ac4]
2: /usr/bin/X (xf86PostMotionEventP+0xc4) [0x47cea4]
3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f585fc01000+0x53cf) [0x7f585fc063cf]
4: /usr/bin/X (0x400000+0x6fca7) [0x46fca7]
5: /usr/bin/X (0x400000+0x11d1c3) [0x51d1c3]
6: /lib/libpthread.so.0 (0x7f5864e10000+0xf8f0) [0x7f5864e1f8f0]
7: /lib/libc.so.6 (ioctl+0x7) [0x7f5863bc7187]
8: /lib/libdrm.so.2 (drmIoctl+0x28) [0x7f58621785b8]
9: /lib/libdrm.so.2 (drmCommandWrite+0x1b) [0x7f586217883b]
10: /lib/libdrm_nouveau.so.1 (0x7f5861b3a000+0x2f7d) [0x7f5861b3cf7d]
11: /lib/libdrm_nouveau.so.1 (nouveau_bo_map_range+0xfc) [0x7f5861b3d1bc]
12: /lib/libdrm_nouveau.so.1 (0x7f5861b3a000+0x2166) [0x7f5861b3c166]
13: /lib/libdrm_

The computer is a Thinkpad T510 with
* NVIDIA Quadro NVS 3100M with 512MB
* Video camera
* Just the built in drivers for graphics, not the official NVidia drivers. I was having trouble with nvidia drivers and dual monitors, so I moved back.

[Telengard]

Re: X freezing with the message: EQ Overflowing

I'm no expert, but this looks like a good old fashioned software bug to me. Carefully check these bug reports and see which resembles your circumstances most. Then please do join in and help find a solution.

Sorry about the trouble, but that's the best I know.

[dibl]

Re: X freezing with the message: EQ Overflowing

I agree with Telengard -- it looks like the nouveau driver is mis-behaving on your hardware. I would advise (in sequence):

1. KMenu > System > Hardware Drivers > Nvidia driver (be patient after you click -- it has to download)

or, if that doesn't work

2. Install the proprietary Nvidia driver:

http://kubuntuforums.net/forums/inde...opic=3107406.0