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Pedro Jose wrote:
Hello everbody:

I use Fedora 10 i386 in a Compaq Presario Notebook C735EM.
The system is updated, and my desktop is gnome with compiz fusion enabled. The graphics card is intel. The problem I have is that when I change the current user session to another user, the system freezes, crashes. All I can do is move the mouse. I can not close the X. I can not move to terminal Cntr + Alt + F1
I tried to do before turning off compiz fusion, but also freezes.
In a virtual machine that I can not, so I guess it is problem of my laptop.
Can someone help me?
I am not sure that there is a current bugzilla on this one (I haven't had time to look into it), but I have this issue as well. I'm working around it by using the following /etc/X11/xorg.conf:
---8<---- Cut Here ---

Section "ServerLayout"
   Identifier     "Default Layout"
   Screen      0  "Screen0" 0 0
   InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"
# keyboard added by rhpxl
   Identifier  "Keyboard0"
   Driver      "kbd"
   Option        "XkbModel" "pc105"
   Option        "XkbLayout" "us"
EndSection

Section "Device"
   Identifier  "Videocard0"
   Driver      "intel"
     Option         "NoAccel" "True"
     Option         "DRI" "True"
     Option         "DDC" "True"
     Option         "XVideo" "True"
     Option         "DevicePresence" "True"
     Option         "ShadowFB" "True"
     Option         "DisplayInfo" "True"
EndSection

Section "Screen"
   Identifier "Screen0"
   Device     "Videocard0"
   DefaultDepth     24
   SubSection "Display"
       Viewport   0 0
       Depth     24
   EndSubSection
EndSection

---8<---- Cut Here ---

The key thing is the  following line in the Device section:

Option         "NoAccel" "True"

This disables the hardware acceleration on the video card. Not great, but it stops the hangs.
Woogie

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