I discovered the same problem. After the steps, described at the first post,
the screen goes black with the only mouse cursor moving. The system seems
running OK, as the cursor may change its shape, when presumably hovering text
fields, but it is impossible to get out of that state.
The system is Ubuntu 8.10 Intrepid, kernel: Linux ubuntu-desktop
2.6.27-7-generic #1 SMP Tue Nov 4 19:33:20 UTC 2008 i686 GNU/Linux; video card
NVidia GeForce4 MX440 AGP 4x, 64MB VRAM, driver 96.43.09-0ubuntu1,
Compiz-Fusion is running. Monitor is Philips 220WS and screen resolution is
1680 * 1050.
Extract from /etc/X11/xorg.conf
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Philips 220WS"
HorizSync 30.0 - 93.0
VertRefresh 56.0 - 76.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce4 MX 440"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "AddARGBGLXVisuals" "True"
Option "TwinView" "0"
Option "TwinViewXineramaInfoOrder" "CRT-0"
Option "metamodes" "1680x1050_60 +0+0; 1680x1050 +0+0; 1280x1024
+0+0; 1024x768 +0+0; 800x600 +0+0; 640x480 +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection
--
Switch User freezes at blank screen
https://bugs.launchpad.net/bugs/112518
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