How can I check if KMS is enabled in my kernel? I've compiled mine with KMS radeon modeset defaulting to 1, but I still suspect that it is not enabled.

EDIT:

aatiis@aiur ~ $ dmesg | grep drm
[drm] Initialized drm 1.1.0 20060810
[drm] Initialized radeon 1.33.0 20080528 for 0000:01:05.0 on minor 0
[drm] Setting GART location based on new memory map
[drm] Loading RS780 CP Microcode
[drm] Resetting GPU
[drm] writeback test succeeded in 1 usecs

EDIT 2:

aatiis@aiur ~ $ glxinfo | grep render  
IRQ's not enabled, falling back to busy waits: 2 0
direct rendering: Yes
OpenGL renderer string: Mesa DRI R600 (RS780 9612) 20090101  TCL

aatiis@aiur ~ $ sudo grep -i kms /var/log/Xorg.0.log
[    57.201] (II) [KMS] drm report modesetting isn't supported.