[  223.300038] radeon 0000:01:00.0: Refused to change power state, currently in D0
[  223.369532] radeon 0000:01:00.0: 748a5631 unpin not necessary
[  223.417835] [drm] PCIE GART of 512M enabled (table at 0x00000000D0040000).
[  223.417843] [drm] radeon: 2 quad pipes, 1 z pipes initialized.
[  223.417851] radeon 0000:01:00.0: WB enabled
[  223.417857] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x00000000b0000000 and cpu addr 0x82ba0693
[  223.417891] [drm] radeon: ring at 0x00000000B0001000
[  223.418018] [drm] ring test succeeded in 1 usecs
[  223.418042] [drm] ib test succeeded in 0 usecs