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If it was a kernel update, then you have to recompile the the kernel module
This happened to me on Dapper last year. I had an ancient ATI 3D Rage pro card when I installed Dapper I didn't think it could get hardware 3D running on the card. I just assumed that the one OpenGL app I was using then was running because Dapper had automatically set up MESA software emulation.
It suddenly stopped working. It took a long time to work out that I had hardware acceleration that had been bjorked by a kernel update. I spent quite a bit of time trying to get it to work but gave up in the end. I set up MESA software emulation with the xorg driver and it worked OK for what I wanted (molecular modelling). A bit slow but workable.
When I bought my new system I deliberately bought one with an on board Intel video chipset. Hardware 3D works great with it both for my molecular modeling apps and for lots of eye candy with Compiz.
Edited 2007-07-27 14:13





Member since:
2007-07-26
Yeah, you're right. But for some people it isn't as easily fixable bo using Ubuntu's somewhat shoddy howto. For instance, I had ATI drivers working great. A few weeks later, one of the updates did something ot make those drivers stop working. I followed every howto I could find but to no avail. I used Envy and everything worked perfectly. That is the main reason why I recommended it.