Freezing with Radeon HD 5670

[iemcd]

I've got a pair of Radeon HD 5670 graphics cards and an AMD CPU. When I boot, "desktop 3.3.8-2.mga2" works fine, but any newer kernel fails to bring up a gui. Instead, it hangs while looping through:

failed to allocate
size: 8294400 bytes
alignment 0 bytes
domains: 2

If I add the parameter "nomodeset" or "radeon.modeset=0", it will give me a desktop, like normal. And in safemode, it will drop me to a command line.

However, after a varying amount of time, the video will freeze, and will not respond to any input. It usually does not take very long, although it appears to be associated with mouse movement (if I don't move the mouse, e.g. video will keep playing). After the freeze, audio will keep playing, so I'm convinced it's a graphics problem.

[oj]

Have you rerun the display settings tool (in mcc) while booted to a newer kernel?

[iemcd]

Have you rerun the display settings tool (in mcc) while booted to a newer kernel?

I made it into the tool (after many tries), and found that it was misdetecting my monitor. I fixed it, and then thought "while I'm at it, I should add nomodeset to the boot options so I don't have to keep doing it manually." Then, as I went to modify them, it crashed, and now grub is a command-line affair.

I'm considering starting from scratch with a fresh install, unless I can fix the grub issue simply. I'll get back here if I fix it though.

[oj]

I'm considering starting from scratch..

Best idea. It sounded like your boot loader didn't get written correctly.

[iemcd]

Alright, I re-installed by telling the install disk it was an upgrade, and now I'm back to where I was before. Except that now my monitor appears to be detected correctly, which means that everything in the graphics setup tool looks correct. Unless there is some sort of auto-configure graphics tool?