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] -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/718858 Title: GPU hang using GL on x86_64 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/718858/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp