Just encountered a similar error, running Kubuntu 8.10 on DQ45CB (Intel
Q45, X4300 video). I had started a glxgears instance and was tailing the
output of Xorg.0.log to try to see if there were any errors when running
3D applications (trying to troubleshoot bad video performance). X locked
up hard; I tried rebooting the system with ctrl+alt+del, and it seemed
to worked, but after rebooting my monitors received no signal and went
into standby and the whole works locked up. In order to get things
working again, I had to actually power off and back on. Scary!
Linux zaphod 2.6.27-9-generic #1 SMP Thu Nov 20 22:15:32 UTC 2008 x86_64
GNU/Linux
ii xserver-xorg-video-intel 2:2.4.1-1ubuntu10
X.Org X server -- Intel i8xx, i9xx display d
Xorg.0.log:
Error in I830WaitLpRing(), timeout for 2 seconds
pgetbl_ctl: 0x00000001 pgetbl_err: 0x00100000
ipeir: 0x00000000 iphdr: 0x60020100
LP ring tail: 0x00002158 head: 0 len: 0x0001f001 start 0x00000000
Err ID (eir): 0x00000000
Err Status (esr): 0x00000011
Err Mask (emr): 0xffffff3f
instdone: 0x808fffff instdone_1: 0x9fbd1922
instpm: 0x00000000
memmode: 0x00000000 instps: 0x0001f02e
HW Status mask (hwstam): 0xfffffffe
IRQ enable (ier): 0x00000002 imr: 0xfffe0000 iir: 0x000000f0
acthd: 0x04d9ff98 dma_fadd_p: 0x04da0180
ecoskpd: 0x00000307 excc: 0x00000900
cache_mode: 0x00006820/0x00000180
mi_arb_state: 0x00000040
IA_VERTICES_COUNT_QW 0x00000000/0x00000000
IA_PRIMITIVES_COUNT_QW 0x00000000/0x00000000
VS_INVOCATION_COUNT_QW 0x00000000/0x00000000
GS_INVOCATION_COUNT_QW 0x00000000/0x00000000
GS_PRIMITIVES_COUNT_QW 0x00000000/0x00000000
CL_INVOCATION_COUNT_QW 0x00000000/0x00000000
CL_PRIMITIVES_COUNT_QW 0x00011ae5/0x00000000
PS_INVOCATION_COUNT_QW 0x000000f4/0x00000000
PS_DEPTH_COUNT_QW 0x01b5e6aa/0x00000000
WIZ_CTL 0x00000000
TS_CTL 0x00000000 TS_DEBUG_DATA 0x00000000
TD_CTL 0x00000000 / 0x00000000
Ring at virtual 0x7f1235e3c000 head 0x0 tail 0x2158 count 2134
Ring at virtual 0x7f1235e3c000 head 0x0 tail 0x2158 count 2134
0001ff00: 00000000 MI_NOOP 1
0001ff04: 01000000 MI_USER_INTERRUPT 1
0001ff08: 10800001 MI_STORE_DATA_INDEX 3
0001ff0c: 00000014
0001ff10: 00878707
0001ff14: 00000000 MI_NOOP 1
0001ff18: 00000000 MI_NOOP 1
0001ff1c: 01000000 MI_USER_INTERRUPT 1
0001ff20: 18800180 MI_BATCH_BUFFER_START 2
0001ff24: 04b8d000
Batch buffer at 0x04b8d000 {
04b8d000: 00000000 MI_NOOP 1
04b8d004: 00000000 MI_NOOP 1
04b8d008: ffffffff Reserved
[... apparently Xorg tried to dump all of the video memory here, the log is
hundreds of megabytes; truncated for obvious reasons]
--
intel gfx: Error in I830WaitLpRing(), timeout for 2 seconds
https://bugs.launchpad.net/bugs/285298
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