Kubuntu 7.10: fast user switching does not work

Edmund ─╣augasson ed.lau at mail.ee
Mon Feb 18 02:32:09 UTC 2008


If I try to switch user in Kubuntu 7.10, KDE 3.5.8 freezes and keyboard/mouse does not work anymore. 
Also over SSH is not possible to log in.

Once I succeeded to switch user but it was only once. I never succeeded later.

I have all updates frequently installed - I use crontab to update automatically my system.

I use also tvtime to watch TV and gv4l to record them.

I also have ATI restricted driver installed (using KDE Control Centre applet), because I have ATI 
Radeon 9600 and would like to use 3D acceleration.

Some file contents:

$ cat /etc/apt/sources.list
deb http://ee.archive.ubuntu.com/ubuntu/ gutsy main restricted
deb-src http://ee.archive.ubuntu.com/ubuntu/ gutsy main restricted
deb http://ee.archive.ubuntu.com/ubuntu/ gutsy-updates main restricted
deb-src http://ee.archive.ubuntu.com/ubuntu/ gutsy-updates main restricted
deb http://ee.archive.ubuntu.com/ubuntu/ gutsy universe
deb-src http://ee.archive.ubuntu.com/ubuntu/ gutsy universe
deb http://ee.archive.ubuntu.com/ubuntu/ gutsy-updates universe
deb-src http://ee.archive.ubuntu.com/ubuntu/ gutsy-updates universe
deb http://ee.archive.ubuntu.com/ubuntu/ gutsy multiverse
deb-src http://ee.archive.ubuntu.com/ubuntu/ gutsy multiverse
deb http://ee.archive.ubuntu.com/ubuntu/ gutsy-updates multiverse
deb-src http://ee.archive.ubuntu.com/ubuntu/ gutsy-updates multiverse
deb http://archive.canonical.com/ubuntu/ gutsy partner
deb-src http://archive.canonical.com/ubuntu/ gutsy partner
deb http://security.ubuntu.com/ubuntu/ gutsy-security main restricted
deb-src http://security.ubuntu.com/ubuntu/ gutsy-security main restricted
deb http://security.ubuntu.com/ubuntu/ gutsy-security universe
deb-src http://security.ubuntu.com/ubuntu/ gutsy-security universe
deb http://security.ubuntu.com/ubuntu/ gutsy-security multiverse
deb-src http://security.ubuntu.com/ubuntu/ gutsy-security multiverse
deb http://wine.budgetdedicated.com/apt gutsy main
deb http://ftp.osuosl.org/pub/pculture.org/miro/linux/repositories/ubuntu gutsy/

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$ cat /etc/X11/xorg.conf
# xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
#   sudo dpkg-reconfigure -phigh xserver-xorg

Section "Files"
EndSection

Section "InputDevice"
         Identifier      "Generic Keyboard"
         Driver          "kbd"
         Option          "CoreKeyboard"
         Option          "XkbRules"      "xorg"
         Option          "XkbModel"      "pc105"
         Option          "XkbLayout"     "ee"
EndSection

Section "InputDevice"
         Identifier      "Configured Mouse"
         Driver          "mouse"
         Option          "CorePointer"
         Option          "Device"        "/dev/input/mice"
         Option          "Protocol"      "ImPS/2"
         Option          "ZAxisMapping"  "4 5"
         Option          "Emulate3Buttons"       "true"
EndSection

Section "InputDevice"
         Driver          "wacom"
         Identifier      "stylus"
         Option          "Device"        "/dev/input/wacom"
         Option          "Type"  "stylus"
         Option          "ForceDevice"   "ISDV4"# Tablet PC ONLY
EndSection

Section "InputDevice"
         Driver          "wacom"
         Identifier      "eraser"
         Option          "Device"        "/dev/input/wacom"
         Option          "Type"  "eraser"
         Option          "ForceDevice"   "ISDV4"# Tablet PC ONLY
EndSection

Section "InputDevice"
         Driver          "wacom"
         Identifier      "cursor"
         Option          "Device"        "/dev/input/wacom"
         Option          "Type"  "cursor"
         Option          "ForceDevice"   "ISDV4"# Tablet PC ONLY
EndSection

Section "Device"
         Identifier      "ATI Technologies Inc RV350 AP [Radeon 9600]"
#       Driver          "ati"
         Driver          "fglrx"
         Busid           "PCI:1:0:0"
         Option          "VideoOverlay" "on"
#       Option          "DRI"                   "true"
#       Option          "ColorTiling"           "on"
#       Option          "EnablePageFlip"        "true"
#       Option          "AccelMethod"           "EXA"
#       Option          "XAANoOffscreenPixmaps"
EndSection

Section "Monitor"
         Identifier      "CML190SX"
         Option          "DPMS"
EndSection

Section "Screen"
         Identifier      "Default Screen"
         Device          "ATI Technologies Inc RV350 AP [Radeon 9600]"
         Monitor         "CML190SX"
         Defaultdepth    24
         SubSection "Display"
                 Modes           "1280x1024"     "1024x768"      "832x624"       "800x600" 
"720x400"       "640x480"
         EndSubSection
EndSection

Section "ServerLayout"
         Identifier      "Default Layout"
   screen "Default Screen"
         Inputdevice     "Generic Keyboard"
         Inputdevice     "Configured Mouse"

         # Uncomment if you have a wacom tablet
         #       InputDevice     "stylus"        "SendCoreEvents"
         #       InputDevice     "cursor"        "SendCoreEvents"
         #       InputDevice     "eraser"        "SendCoreEvents"
EndSection

Section "Extensions"
         Option          "Composite"     "0"
EndSection
Section "Module"
         Load            "glx"
         Load            "GLcore"
         Load            "dri"
EndSection


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X.org log file is also included as attachment.

Does anybody have idea, what could be wrong? Or shall I wait Kubuntu 8.04, which is LTS (long term 
support) and therefore contains less bugs? Or does this feature work only with official Ubuntu, 
which is based on Gnome? Actually in Kubuntu 6.06.1 LTS this fast user switching worked.

Thanks for answers, Edmund
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