[gm45] Xorg crash when idle: Failed to map batchbuffer: Cannot allocate memory

[Jeremy Kerr]

Binary package hint: xserver-xorg-video-intel

I have had Xorg crash several times while not at the computer, and I return to find a KDM login prompt. Before the crash, the screen has been locked, with no screensaver running.

There may have been notifications appearing in the background; I generally have IRC (Quassel) and IM (kopete) clients running while the system is idle. The crash may be related to an event (notifcation) occuring at the time, but I can't tell.

Xorg.0.log.old reports around 2.5k lines of:

 (WW) intel(0): i830_uxa_prepare_access: bo map failed

At the end of the log:

 Fatal server error:
 Failed to map batchbuffer: Cannot allocate memory

May be a dup of Bug #539938, but reporting separately as it looks like we have a different errno here.

Running lucid, xserver-xorg-video-intel version is 2:2.9.1-3ubuntu5, kernel version 2.6.32-22.33.

Happy to provide more info if required.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xorg-video-intel 2:2.9.1-3ubuntu5
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic x86_64
Architecture: amd64
Date: Wed Jun 2 08:23:04 2010
DkmsStatus:

EcryptfsInUse: Yes
MachineType: LENOVO 2777CTO
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=66f31270-8b1f-4e8b-b057-0dbb76dc5c81 ro crashkernel=384M-2G:64M,2G-:128M quiet splash
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=en_AU.utf8
 SHELL=/bin/bash
SourcePackage: xserver-xorg-video-intel
dmi.bios.date: 05/15/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 6EET41WW (3.01 )
dmi.board.name: 2777CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6EET41WW(3.01):bd05/15/2009:svnLENOVO:pn2777CTO:pvrThinkPadX301:rvnLENOVO:rn2777CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2777CTO
dmi.product.version: ThinkPad X301
dmi.sys.vendor: LENOVO
system:
 distro: Ubuntu
 codename: lucid
 architecture: x86_64
 kernel: 2.6.32-22-generic

[lspci]
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
     Subsystem: Lenovo Device [17aa:20e4]

[Jeremy Kerr (jk-ozlabs)]

Just happened again, except this time the machine wasn't idle; I was editing a file with gvim. Xorg had been running for about two days.

Same message in the Xorg log:

Fatal server error:
Failed to map batchbuffer: Cannot allocate memory

[Bryce Harrington (bryce)]

Yeah, all of the X error messages are just generic errors that mean the system ran out of memory. Some other gui app was probably leaking memory badly. The xserver in Lucid has poor low-memory-condition handling, so will crash in those situations, but the underlying problem is going to be something else.

Fwiw, I put in several memory-starvation fixes into xserver subsequent to Lucid, but they don't actually fix the problem, they just make X not crash in these situations; your system is still out of memory and other things will certainly fail.

Bumping out of the X queue since figuring out what's leaking will take additional sleuth work.

[penalvch (penalvch)]

Jeremy Kerr, thank you for reporting this bug to Ubuntu. Lucid Desktop reached EOL on May 9, 2013.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases

Is this an issue in a supported release?

[Launchpad Janitor (janitor)]

[Expired for Ubuntu because there has been no activity for 60 days.]