https://bugs.freedesktop.org/show_bug.cgi?id=94414

--- Comment #14 from Jean-Philippe Gariépy gawix@yahoo.com --- (In reply to Felix Miata from comment #12)

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I'll try using another desktop environment tonight.

Not just another DE, but another OS, like a Knoppix DVD or other live media, to help determine whether a software problem, or failing X300 RAM. If it's RAM, maybe trying a lower resolution mode or display would tell that your real limit has dropped to less than 2048. Was your X300 manufactured by MSI, or shipped originally in a Dell PC?

My X300 came in a Dell PC.

Didn't have the time to try another distribution but I remember having similar display problems while trying Ubuntu from a Live image. Same problem under KDE.

At 1280x1024, I get the "CS space validation" error message. At 1280x960, I don't get it.