Lockup on Log out, switch user

[Leona]

When ever I try to log out or try to switch users, the system halts, No keyboard commands will work, just a blank screen, I have to restart the system. This is reproduce-able every time, this worked perfectly in 8.04!

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: libplymouth2 0.8.2-2ubuntu2
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Sun May 9 19:34:49 2010
DefaultPlymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 002: ID 03f0:5811 Hewlett-Packard PhotoSmart C5100 series
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: System manufacturer System Product Name
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-22-generic root=UUID=6d7afa99-f2b9-4413-939e-2a3936553fb4 ro quiet splash
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_GB.utf8
 SHELL=/bin/bash
ProcFB: 0 VGA16 VGA
SourcePackage: plymouth
TextPlymouth: /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
dmi.bios.date: 02/14/2007
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: ASUS M2N-E ACPI BIOS Revision 0802
dmi.board.name: M2N-E
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: 1.XX
dmi.chassis.asset.tag: 123456789000
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrASUSM2N-EACPIBIOSRevision0802:bd02/14/2007:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM2N-E:rvr1.XX:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

[royalbee (royalbee)]

same here - switch user and log out leads to blank screen.

one workaround i found is to use 2.6.31-20 kernel from 9.10

[royalbee (royalbee)]

solved by https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/573557

[Leona (leona-devon)]

Whether I miss understand that post or its too complicated, but I can not see how that fixes the problem, we have had driver and kernel updates, this problem is still here! Please can we have an UPDATE that fixes it, thank you.

[Martin Magnusson (martin-blecket)]

@royalbee: Bug 573557 concerns a bug when two or more nVidia cards. This bug happens with only one graphics card, but more than one user.

[Leona (leona-devon)]

I solved this on my machine by,
Go to the System menu, then Administration and Hardware Drivers
Select the latest version (recommended) nvidia driver. (bottom option)
Let it download, select apply and restart.
This should install a later version eg 195, which seems to resolve the problem.
Hope this helps.
Leona