*** This bug is a duplicate of bug 546578 *** https://bugs.launchpad.net/bugs/546578
** Description changed: - [Copycat - A blackscreen can also appear due to a bug in the Gnome - screensaver. (goto bug #546578)] + [Copycat - A blackscreen can also appear due to a bug in the ATI driver + - workaround involving gnome-screensaver. (goto bug #546578)] Steps to reproduce: 1. While logged in as user A, System|Log Out <username>|Switch User 2. Login to user B, ensure all is working properly and logout from user B. - screen goes black - keyboard no longer works - mouse no longer works 100% reproduceable. However, I can: 1. ssh -X into the machine w/o issue. I can bring up gui's from the affected machine (i.e., gnome-system-log, vino-preferences, etc). 2. remote login to the machine via VNC and get a screen; however I then get multiple tserver instances & have to kill it. Remote login to the machine using NX w/o issue. 3. reboot the machine from the remote ssh. Attempts to resolve: - 1. Ensured that the problem exists with enhanced graphics turned off (System|Preferences|Appearance|Visual Effects|None) + 1. Ensured that the problem exists with enhanced graphics turned off (System|Preferences|Appearance|Visual Effects|None) 2. Ensured that the problem wasn't related to gnome-screensaver as per similar reports (purged gnome-screensaver, installed gnome-screensaver 2.30.0-0ubuntu2 etc). Workaround: Remove nvidia-96 and reboot. All switching between users then works properly. Reinstall nvidia-96 and the problem occurs. ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: nvidia-96 96.43.17-0ubuntu1 ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2 Uname: Linux 2.6.32-22-generic i686 NonfreeKernelModules: nvidia Architecture: i386 Date: Tue May 25 19:53:36 2010 DkmsStatus: - vboxdrv, 3.2.0, 2.6.32-22-generic, i686: installed - vboxnetadp, 3.2.0, 2.6.32-22-generic, i686: installed - nvidia-96, 96.43.17, 2.6.32-21-generic, i686: installed - nvidia-96, 96.43.17, 2.6.32-22-generic, i686: installed - vboxnetflt, 3.2.0, 2.6.32-22-generic, i686: installed + vboxdrv, 3.2.0, 2.6.32-22-generic, i686: installed + vboxnetadp, 3.2.0, 2.6.32-22-generic, i686: installed + nvidia-96, 96.43.17, 2.6.32-21-generic, i686: installed + nvidia-96, 96.43.17, 2.6.32-22-generic, i686: installed + vboxnetflt, 3.2.0, 2.6.32-22-generic, i686: installed ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=c606c2a7-1fb1-403f-9b90-52f5f150340b ro quiet splash ProcEnviron: - LANGUAGE=en_US:en - PATH=(custom, no user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + LANGUAGE=en_US:en + PATH=(custom, no user) + LANG=en_US.UTF-8 + SHELL=/bin/bash SourcePackage: nvidia-graphics-drivers-96 dmi.bios.date: 09/29/2004 dmi.bios.vendor: Intel Corp. dmi.bios.version: BF86510A.86A.0069.P21.0409290100 dmi.board.name: D865GBF dmi.board.vendor: Intel Corporation dmi.board.version: AAC25843-408 dmi.chassis.type: 2 dmi.modalias: dmi:bvnIntelCorp.:bvrBF86510A.86A.0069.P21.0409290100:bd09/29/2004:svn:pn:pvr:rvnIntelCorporation:rnD865GBF:rvrAAC25843-408:cvn:ct2:cvr: glxinfo: Error: [Errno 2] No such file or directory system: - distro: Ubuntu - codename: lucid - architecture: i686 - kernel: 2.6.32-22-generic + distro: Ubuntu + codename: lucid + architecture: i686 + kernel: 2.6.32-22-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/585685 Title: Logout after switch user causes black screen and disables keyboard and mouse -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs