Comment 62 for bug 107115

Confirming this issue on Gutsy Gibbon with FGLRX 8.02 (released 13th Feb 08). Running with KDM, so I've tried with the following remedies (which did not do it for me):
 * TerminateServer=true in kdmrc
 * Option "AGPMask" "0x00000005" # Disable 1x and 4x
 * Option "UseInternalAGPGART" "no"

However, I _am_ able to shift to console mode using Ctrl-Alt-Fx and back to X with no problems, but log outs and Ctrl-Alt-Backspace freezes the machine so that Caps Lock/Num Lock no longer can be toggled - but SysRq works.

This is what is present in the log file up to the point of the freeze:
Feb 15 09:35:57 nc6000 kernel: [fglrx] interrupt source 10000000 successfully disabled!
Feb 15 09:35:57 nc6000 kernel: [fglrx] enable ID = 0x00000000
Feb 15 09:35:57 nc6000 kernel: [fglrx] Receive disable interrupt message with irqEnableMask: 10000000; dwIRQEnableId: 00000005
Feb 15 09:35:57 nc6000 kernel: [fglrx] interrupt source 20008000 successfully disabled!
Feb 15 09:35:57 nc6000 kernel: [fglrx] enable ID = 0x00000000
Feb 15 09:35:57 nc6000 kernel: [fglrx] Receive disable interrupt message with irqEnableMask: 20008000; dwIRQEnableId: 00000004
Feb 15 09:36:29 nc6000 kernel: SysRq : Emergency Sync
Feb 15 09:36:29 nc6000 kernel: Emergency Sync complete