[Maverick beta] Xorg crash at KDE logout

[Swâmi Petaramesh]

Binary package hint: kdebase-workspace

Seen on 3 different machines (all Intel graphics) since upgrading to Maverick Beta and still with latest updates, none having had any problem with Lucid previously:

- When logging out of KDE, we're back to a text console with scrambled messages. There's no graphic KDM screen available anywhere although "ps ax" seems to show that some kdm is still running.

- "sudo restart kdm" from a text console is needed to restore a working KDM.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: kdm 4:4.5.1-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-22.32-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
Architecture: i386
CheckboxSubmission: 1ea6109db29b53f721a523a77b7f3abf
CheckboxSystem: d00f84de8a555815fa1c4660280da308
Date: Sun Sep 19 11:28:24 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 LANGUAGE=fr_FR:fr:en_US:en
 PATH=(custom, user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: kdebase-workspace

[Christophe Dumez (hydr0g3n)]

Hi, same here with an up-to-date maverick.

It actually by an Xorg crash on logout (See attached kdm.log)

[Christophe Dumez (hydr0g3n)]

Here is a gdb backtrace that should be usable (I installed the debug symbols).

[Christophe Dumez (hydr0g3n)]

Disabling desktop effect in KDE system settings seems to work around this issue.

[Christophe Dumez (hydr0g3n)]

I also have an Intel video chipset:

00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
        Subsystem: Dell Device [1028:0410]
        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
        Interrupt: pin A routed to IRQ 46
        Region 0: Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
        Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Region 4: I/O ports at 60b0 [size=8]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: <access denied>
        Kernel driver in use: i915
        Kernel modules: i915