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[SlawekM <718858@xxxxxxxxxxxxxxxxxx>]

I don't think this is hardware related. I have seen it on a various
laptops equipped with either Intel, AMD or nvidia video chips. I would
rather say it is related to mouse gestures as this always (at least in
my case) occurs when I'm using mouse intensively, mostly during web
browsing (firefox, chrome - no difference). Also occurs frequently when
I'm in netbeans. I have experienced this in 10.04, 10.10 and 11.04 and
only while running gnome (Xfce never died that way). It's also worth to
mention that I've never seen this on a desktop, so it seems to be a
illness that affects only laptops.

My solution is to login to text-based console (Ctrl+Alt+F1) and then
restart gdm service. Once done, the problem is gone. At least till next
time :)

I would bet this is a bug in gnome display manager.

stack trace is similar:

I830PMEvent: Capability change
[mi] EQ overflowing. The server is probably stuck in an infinite loop.

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x3b) [0x80eab2b]
1: /usr/bin/X (mieqEnqueue+0x1ab) [0x80e9d0b]
2: /usr/bin/X (xf86PostButtonEventM+0xc7) [0x80c50e7]
3: /usr/bin/X (xf86PostButtonEvent+0xa8) [0x80c5268]
4: /usr/lib/xorg/modules/input/synaptics_drv.so (0xb6548000+0x260a) [0xb654a60a]
5: /usr/lib/xorg/modules/input/synaptics_drv.so (0xb6548000+0x4487) [0xb654c487]
6: /usr/lib/xorg/modules/input/synaptics_drv.so (0xb6548000+0xad75) [0xb6552d75]
7: /usr/lib/libutouch-grail.so.1 (grail_pull+0x2ec) [0xb65433cc]
8: /usr/lib/xorg/modules/input/synaptics_drv.so (0xb6548000+0xab31) [0xb6552b31]
9: /usr/lib/xorg/modules/input/synaptics_drv.so (0xb6548000+0x6722) [0xb654e722]
10: /usr/bin/X (0x8048000+0x6b41f) [0x80b341f]
11: /usr/bin/X (0x8048000+0x12ddb6) [0x8175db6]
12: (vdso) (__kernel_sigreturn+0x0) [0xb7731400]
13: /usr/bin/X (0x8048000+0x27f1e) [0x806ff1e]
14: /usr/bin/X (0x8048000+0x1a81c) [0x806281c]
15: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xe7) [0xb744ee37]
16: /usr/bin/X (0x8048000+0x1a411) [0x8062411]

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https://bugs.launchpad.net/bugs/718858

Title:
  GPU hang using GL on x86_64

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