X Freeze in i965_dri.so

[Ian McKellar]

Binary package hint: libgl1-mesa-dri

When I leave my Lenovo X61 Tablet idle for a while in Intrepid it sometimes freezes. All that's left showing is the desktop background, the mouse moves, but nothing can bring it back. When I ssh in Xorg is at 100% cpu. The stack trace looks like this:
#0 0xb7fcc430 in __kernel_vsyscall ()
#1 0xb7c8a1a9 in ioctl () from /lib/tls/i686/cmov/libc.so.6
#2 0xb7f974ab in drmCommandWrite () from /usr/lib/libdrm.so.2
#3 0xa7597cd6 in intelWaitIrq () from /usr/lib/dri/i965_dri.so
#4 0xa7591f74 in ?? () from /usr/lib/dri/i965_dri.so
#5 0xa758b3bc in ?? () from /usr/lib/dri/i965_dri.so
#6 0xa758a712 in dri_fence_wait () from /usr/lib/dri/i965_dri.so
#7 0xa758de0d in intelCopyBuffer () from /usr/lib/dri/i965_dri.so
#8 0xa7590620 in intelSwapBuffers () from /usr/lib/dri/i965_dri.so
#9 0xa75875a7 in ?? () from /usr/lib/dri/i965_dri.so
#10 0xb7aefac4 in ?? () from /usr/lib/xorg/modules/extensions//libglx.so
#11 0xb7ae22ce in ?? () from /usr/lib/xorg/modules/extensions//libglx.so
#12 0xb7ae5c0a in ?? () from /usr/lib/xorg/modules/extensions//libglx.so
#13 0x0808c89f in Dispatch ()
#14 0x08071d1d in main ()

strace of the Xorg process shows the same ioctl over and over again:
ioctl(12, 0x40046445, 0xbfece618) = 0
ioctl(12, 0x40046445, 0xbfece618) = 0
ioctl(12, 0x40046445, 0xbfece618) = 0
ioctl(12, 0x40046445, 0xbfece618) = 0
ioctl(12, 0x40046445, 0xbfece618) = 0
ioctl(12, 0x40046445, 0xbfece618) = 0
ioctl(12, 0x40046445, 0xbfece618) = 0

with an occasional sigalrm:
--- SIGALRM (Alarm clock) @ 0 (0) ---
sigreturn() = ? (mask now [])

I'm running libgl1-mesa-dri 7.2-1ubuntu2.

[lspci]
00:00.0 Host bridge [0600]: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub [8086:2a00] (rev 0c)
     Subsystem: Lenovo Device [17aa:20b3]
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02] (rev 0c)
     Subsystem: Lenovo Device [17aa:20b5]

[Bryce Harrington (bryce)]

Hi ianloic,

Please attach the output of `lspci -vvnn`, and attach your /var/log/Xorg.0.log file from after reproducing this issue. If you've made any customizations to your /etc/X11/xorg.conf please attach that as well.

[Ian McKellar (ianloic)]

Here's my lspci output. I've made no xorg.conf changes (thanks for the amazing work on autodetection!). I'll attach the Xorg log when I next see the crash.

I've installed debug packages of a bunch of these Xorg things - is there a good way to run the version that includes debug symbols?

[Ian McKellar (ianloic)]

Here's my Xorg.0.log

[Radu Cristescu (radu.c)]

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.

[Radu Cristescu (radu.c)]

The motherboard mentioned above is an Asus P5E-V HDMI.

The lspci -vvnn output for the video card is this:

00:02.1 Display controller [0380]: Intel Corporation 82G35 Express Integrated Graphics Controller [8086:2983] (rev 03)
        Subsystem: ASUSTeK Computer Inc. Device [1043:8276]
        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-

[Timo Aaltonen (tjaalton)]

You should try to reproduce it using a jaunty livecd or after the upgrade.