I have Linux Mint 13 64bit (MATE) on a Dell Optiplex 755 with an NVIDIA NVS 300 (512MB).
After finally getting the display running (and honestly, after all this time, I don't recall what I did to finally get a working xorg.conf, but I did finally get one), after I do any number of things, the desktop will crash and I get dropped back out to the desktop login. Usually when I open Chromium, and always when I try to open the settings on my VirtualBox.
Odd thing: after many days of giving up, I booted and installed all the pending updates, and it starts working fine. In fact, I went into the VB settings and turned on the 3D acceleration in my VB guest install, and all is good, until I have to reboot. And suddenly, it's all back to the way it was--crashing the desktop all the time.
In fact, I try to open my Windows XP VB and I get the error:
"The VM was configured to use 3D acceleration. However, the 3D support of the host is not working properly...."
and now I can't open VB because of that.
I looked at the Additional Drivers, and I have tried both:
NVIDIA accelerated graphics driver (version current) [Recommended] and (post-release updates) [version current-updates]
and neither one seem to make any difference.
So, how can I figure out what in the word happened that one glorious hour when my video card/drivers/desktop all seemed to work OK? What can I do to investigate what's causing it to keep crashing now?
Any help would be appreciated! Thanks.