Comment 23 for bug 542357

I'm getting this on a machine with: Kubuntu Lucid AMD 64, Radeon HD 4850 running ATI driver.

Lucid Beta 2 live cd works fine, but my installed version (which worked fine a few weeks ago until I updated recently) gets to KDM and then just stops. Mouse and Keyboard don't *seem* to respond, however Alt+SysRq+RSE drops me to a working root shell.

The only real uncommon errors I can see in kdm.log / Xorg.0.log are:

"Kcrash: Application 'KDMgreet' is crashing..."

and shortly after:

"Error setting MTRR (base = xd0000000, size = 0x100000000, type = 1) Inappropriate IOCTL for device (25)"
DDXSigGiveUp: Closing Log
drKonqi: cannot connect to X server 0.0"

Please let me know if there's any info I can provide to help.