In Kubuntu Precise beta1 x_64, full up-to-date, i experience crashes of the Xserver. There are black screens, sometimes the desktop comes back, somtimes it ends up with a crash with moveable mouse but no further possibilities. More Information about hardware and logs see attachments. Strange symptom is, that this disposition to crash seems sometimes not to be present after boot, sometimes (and far more times unfortunately) yes.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
Date: Sat Mar 10 09:33:27 2012
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120228)
ProcEnviron:
LANGUAGE=
TERM=xterm
LANG=de_DE.UTF-8
SHELL=/bin/bash
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: No upgrade log present (probably fresh install)
[ 624.618801] ------------[ cut here ]------------
[ 624.618823] WARNING: at /build/buildd/linux-3.2.0/drivers/gpu/drm/i915/i915_drv.c:413 __gen6_gt_wait_for_fifo+0x94/0xa0 [i915]()
[ 624.618826] Hardware name: To Be Filled By O.E.M.
[ 624.618829] Modules linked in: dm_crypt parport_pc ppdev rfcomm bnep bluetooth snd_emu10k1_synth snd_emux_synth snd_seq_virmidi snd_seq_midi_emul snd_emu10k1 snd_usb_audio snd_ac97_codec ac97_bus snd_usbmidi_lib snd_pcm snd_page_alloc snd_util_mem snd_hwdep snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq psmouse snd_timer snd_seq_device uvcvideo videodev v4l2_compat_ioctl32 snd joydev soundcore serio_raw mac_hid mei(C) lp parport usbhid hid i915 drm_kms_helper e1000e drm i2c_algo_bit video
[ 624.618866] Pid: 1271, comm: Xorg Tainted: G C 3.2.0-18-generic #29-Ubuntu
[ 624.618868] Call Trace:
[ 624.618877] [<ffffffff8106724f>] warn_slowpath_common+0x7f/0xc0
[ 624.618882] [<ffffffff810672aa>] warn_slowpath_null+0x1a/0x20
[ 624.618891] [<ffffffffa00989d4>] __gen6_gt_wait_for_fifo+0x94/0xa0 [i915]
[ 624.618901] [<ffffffffa0099055>] i915_write32+0xe5/0xf0 [i915]
[ 624.618919] [<ffffffffa00d5612>] gen6_ring_put_irq+0xa2/0xc0 [i915]
[ 624.618934] [<ffffffffa00d5648>] blt_ring_put_irq+0x18/0x20 [i915]
[ 624.618946] [<ffffffffa00aab97>] i915_wait_request+0x1b7/0x560 [i915]
[ 624.618952] [<ffffffff8108ae20>] ? add_wait_queue+0x60/0x60
[ 624.618963] [<ffffffffa00aaf72>] i915_gem_object_wait_rendering+0x32/0x40 [i915]
[ 624.618975] [<ffffffffa00afd2d>] i915_gem_execbuffer_sync_rings+0xdd/0x160 [i915]
[ 624.618985] [<ffffffffa00aff1e>] i915_gem_execbuffer_move_to_gpu+0x16e/0x200 [i915]
[ 624.618996] [<ffffffffa00b064b>] i915_gem_do_execbuffer.isra.8+0x69b/0x940 [i915]
[ 624.619002] [<ffffffff8108ef5b>] ? __hrtimer_start_range_ns+0x16b/0x3a0
[ 624.619013] [<ffffffffa00b0db3>] i915_gem_execbuffer2+0xa3/0x270 [i915]
[ 624.619025] [<ffffffffa00165d4>] drm_ioctl+0x444/0x510 [drm]
[ 624.619036] [<ffffffffa00b0d10>] ? i915_gem_execbuffer+0x420/0x420 [i915]
[ 624.619042] [<ffffffff8101dbf4>] ? restore_user_xstate+0x54/0xa0
[ 624.619047] [<ffffffff811893ba>] do_vfs_ioctl+0x8a/0x340
[ 624.619051] [<ffffffff81189701>] sys_ioctl+0x91/0xa0
[ 624.619056] [<ffffffff81663642>] system_call_fastpath+0x16/0x1b
[ 624.619059] ---[ end trace 44628b579776a2f4 ]---
[ 624.624161] ------------[ cut here ]------------
For GPU lockup bugs with Intel graphics, you need to collect the output of 'dmesg' and your /sys/kernel/
For future reference, file bugs using the 'ubuntu-bug xorg' command, as it will attach the files individually rather than concatenated together (which makes it harder to review). Also, it's helpful if you can reproduce the issue on regular ubuntu rather than kubuntu since the former is what we're primarily supporting now.