XFree86 I830WaitLpRing lockup

[Andrew Yeomans]

X server locks up - display freezes. At bottom of screen there is a stripe about
64 pixels high, showing random vertical bars. This happens about once a day,
while computer is idle, only X screensaver is running. (I'm tempted to blame a
specific screensaver, but haven't identified which was running at time of
crash). Cannot do anything from keyboard or mouse, so I've powered down.

Computer is a Compaq Evo D51S running Warty Warthog with latest updates, but no
customisation.

XFree86.0.log ends:-

Error in I830WaitLpRing(), now is 7580625, start is 7578624
pgetbl_ctl: 0x1ffe0001 pgetbl_err: 0x49
ipeir: 0 iphdr: 2000001
LP ring tail: 5690 head: 52ec len: 1f001 start 0
eir: 0 esr: 10 emr: ff7b
instdone: 68c1 instpm: 0
memmode: 0 instps: 22
hwstam: ffff ier: 0 imr: ffff iir: 0
space: 130132 wanted 131064

FatalError re-entered, aborting
lockup

And syslog has:-

Nov 26 12:52:04 localhost kernel: [drm:i830_wait_ring] *ERROR* space: 131052
wanted 131064
Nov 26 12:52:04 localhost kernel: [drm:i830_wait_ring] *ERROR* lockup
Nov 26 12:52:07 localhost kernel: [drm:i830_wait_ring] *ERROR* space: 130700
wanted 131064
Nov 26 12:52:07 localhost kernel: [drm:i830_wait_ring] *ERROR* lockup
Nov 26 12:52:10 localhost kernel: [drm:i830_wait_ring] *ERROR* space: 130348
wanted 131064
Nov 26 12:52:10 localhost kernel: [drm:i830_wait_ring] *ERROR* lockup
Nov 26 12:52:30 localhost kernel: [drm:i830_wait_ring] *ERROR* space: 130268
wanted 131064
Nov 26 12:52:30 localhost kernel: [drm:i830_wait_ring] *ERROR* lockup
Nov 26 12:52:35 localhost kernel: [drm:i830_wait_ring] *ERROR* space: 130132
wanted 131064
Nov 26 12:52:35 localhost kernel: [drm:i830_wait_ring] *ERROR* lockup
Nov 26 12:52:37 localhost udev[5480]: removing device node '/dev/vcs7'
Nov 26 12:52:37 localhost udev[5490]: removing device node '/dev/vcsa7'

[Andrew Yeomans (ayeomans)]

Created an attachment (id=807)
XFree86 log up to crash

[Daniel Stone (daniels)]

Fixed in X.Org in Hoary.