The ioctl loop happened to me as well over the weekend. I booted a
Ubuntu 8.10 live CD on a machine this Friday, started a screensaver
(Stonerview) and left it running over the weekend. It worked fine the
entire Friday, but when I came back on Monday, X was using 100% of the
CPU and strace showed it looping with a similar ioctl call, interrupted
only briefly by a periodic SIGALRM.
The logs don't show anything strange. Both dmesg and Xorg.0.log look the
same as they were when I left on Friday.
The video card shows up like this on the PCI bus:
00:02.1 Display controller: Intel Corporation 82G35 Express Integrated Graphics
Controller (rev 03)
Subsystem: ASUSTeK Computer Inc. Device 8276
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Region 0: Memory at fe900000 (32-bit, non-prefetchable) [size=1M]
Capabilities: [d0] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
I killed all the X applications, but the situation didn't change. I had
to kill X and let gdm restart. After gdm restarted, everything works
fine again. No reboot or other voodoo needed.
It's a off the shelf 8.10 Live CD to which I added an ssh server so I
can log in if X crashes and look for logs.
--
X Freeze in i965_dri.so
https://bugs.launchpad.net/bugs/292234
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