Ubuntu 8.04: Get a "window creation error" at startup

Hi,

SL was running just fine on Ubuntu 8.04 and tonight I just cant get it work. Few seconds after I start the program, I get the "window creation error" and I cant go further. It does the same with a deb package that I've installed tonight after reading another post in this forum (from "http://apt.byteme.org.uk unstable main".

I haven't run SL for few days and I cant remember if I updated the system since my last successful SL logon (shame on me). I pasted here the last lines of the trace from the command shell, as it seems to explain why it cant start. It seems related to the version of GTK, but I'm not good enough with Linux to fix it (and I'm afraid to play with anything related to the display and screw up my OS).

Thanks in advance!!

2008-07-03T04:46:02Z INFO: initWindow: Initializing window...
2008-07-03T04:46:02Z INFO: ll_try_gtk_init: Starting GTK Initialization.
2008-07-03T04:46:02Z INFO: ll_try_gtk_init: GTK Initialized.
2008-07-03T04:46:02Z INFO: ll_try_gtk_init: - Compiled against GTK version 2.4.14
2008-07-03T04:46:02Z INFO: ll_try_gtk_init: - Running against GTK version 2.12.9
2008-07-03T04:46:02Z INFO: createContext, fullscreen=0 size=1439x825
2008-07-03T04:46:02Z INFO: createContext: Compiled against SDL 1.2.5
2008-07-03T04:46:02Z INFO: createContext: Running against SDL 1.2.12
2008-07-03T04:46:02Z INFO: createContext: creating window 1439x825x32
2008-07-03T04:46:02Z WARNING: createContext: window creation failure. SDL: Couldn't find matching GLX visual
2008-07-03T04:46:02Z INFO: destroyContext begins
2008-07-03T04:46:02Z INFO: destroyContext: shutdownGL begins
2008-07-03T04:46:02Z INFO: destroyContext: SDL_QuitSS/VID begins
2008-07-03T04:46:02Z INFO: OSMessageBoxSDL: Creating a dialog because we're in windowed mode and GTK is happy.

I'll post an explanation in few minutes. dont loose time helping me...

The solution was in the post just before mine, but i was so convinced that it was related to a version of GTK that I overlooked this post.

Explanation:
Tonight I messed a lot with Network-Manager so it would connect my laptop automatically on my wireless network. I finally solved that problem by erasing everything related to my wireless card in the /etc/network/interfaces file. At reboot, since nothing related to the wireless setup was to be found in this file, network-manager did its job, and connected to my wireless network. For some reason, somewhere in the process it enabled the wifi card restricted driver, but disabled the restricted driver for the nvidia video card.

This answer from Jillian Callahan in another post got me on track: "Turn on the restricted driver for your video."

I went to "system", "admin", "restricted drivers" and I enabled the nvidia 3d accelerator driver, rebooted and I'm fat happy. The menu that I describe is for ubuntu 8.04 and since I have the french version I gave you an approximate translation of the menus.. in french it's in "Systeme", "Administration","pilotes de peripheriques".

Sorry for starting another tread with an existing problem, and thanks to Jillian for the answer.