I'm getting the same thing, on an old Dell Inspiron 8200.
Video card is an nVidia GeForce4 440 Go, using the 96.43.17 driver.
I also tried the 96.43.16 driver with the same results.
One strange thing that I found was that using gdm for a display manager, the
problem goes away.
With gdm, I can log out, and still have a working system with terminals, and it
will log back in OK.
Using either kdm or xdm, I have nothing but black screens after logging out.
When I ssh into the computer (after logging out of KDE), top shows 99% cpu for
Xorg.
If I kill the process, then the login screen returns, and I can log back in to
KDE.
Here's the result of tail -f /var/log/Xorg.0.log as I am logging out of
KDE:
II) Video Bus: Close
(II) UnloadModule: "evdev"
(II) Power Button: Close
(II) UnloadModule: "evdev"
(II) Sleep Button: Close
(II) UnloadModule: "evdev"
(II) Logitech USB-PS/2 Optical Mouse: Close
(II) UnloadModule: "evdev"
(II) AT Translated Set 2 keyboard: Close
(II) UnloadModule: "evdev"
(II) DualPoint Stick: Close
(II) UnloadModule: "evdev"
(II) UnloadModule: "synaptics"
(II) Macintosh mouse button emulation: Close
(II) UnloadModule: "evdev"
(II) Open ACPI successful (/var/run/acpid.socket)
(II) APM registered successfully
(II) NVIDIA(0): Initialized GART.
(WW) NVIDIA(0): WAIT (2, 6, 0x8000, 0x00000300, 0x000003d4)
(WW) NVIDIA(0): WAIT (1, 6, 0x8000, 0x00000300, 0x000003d4)
(II) NVIDIA(0): Setting mode "1600x1200"
(WW) NVIDIA(0): WAIT (2, 1, 0x8000, 0x00000300, 0x00000498)
(WW) NVIDIA(0): WAIT (1, 1, 0x8000, 0x00000300, 0x00000498)
(WW) NVIDIA(0): WAIT (2, 3, 0x8000, 0x00000300, 0x000008c0)
(WW) NVIDIA(0): WAIT (1, 3, 0x8000, 0x00000300, 0x000008c0)
(WW) NVIDIA(0): WAIT (2, 11, 0x8000, 0x00000300, 0x000008e0)
(WW) NVIDIA(0): WAIT (1, 11, 0x8000, 0x00000300, 0x000008e0)
Nothing after this. I'll attach the full log file.
** Attachment added: "Xorg.0.log.old"
http://launchpadlibrarian.net/47814564/Xorg.0.log.old
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Exiting any windowmanager causes kdm to show just a black screen
https://bugs.launchpad.net/bugs/573632
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