Confirmed that the fixes described above do not fix Karmic (fully updated release version, running from a USB pen drive) on my Aspire 5100. Also found that the AGP mode tweaks from
https://wiki.ubuntu.com/X/Quirks#ATI%20AGP%20Mode%20Quirk
don't help.
So if you have one of these machines I'd stick with Jaunty for now.
Confirmed that the fixes described above do not fix Karmic (fully updated release version, running from a USB pen drive) on my Aspire 5100. Also found that the AGP mode tweaks from
https:/ /wiki.ubuntu. com/X/Quirks# ATI%20AGP% 20Mode% 20Quirk
don't help.
So if you have one of these machines I'd stick with Jaunty for now.