dmesg | grep -i radeon
[ 1.371941] [drm] radeon kernel modesetting enabled.
[ 1.514874] fb: switching to radeondrmfb from EFI VGA
[ 1.573397] radeon 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=none
[ 1.809709] radeon 0000:01:00.0: VRAM: 1024M 0x0000000000000000 - 0x000000003FFFFFFF (1024M used)
[ 1.809713] radeon 0000:01:00.0: GTT: 1024M 0x0000000040000000 - 0x000000007FFFFFFF
[ 1.809815] [drm] radeon: 1024M of VRAM memory ready
[ 1.809817] [drm] radeon: 1024M of GTT memory ready.
[ 1.814783] [drm] radeon: dpm initialized
[ 1.815311] [drm] enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0
[ 1.826451] radeon 0000:01:00.0: WB enabled
[ 1.826455] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and cpu addr 0x00000000957e19e9
[ 1.826458] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and cpu addr 0x00000000178c14b1
[ 1.827205] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x0000000000072118 and cpu addr 0x000000005541d674
[ 1.827212] radeon 0000:01:00.0: radeon: MSI limited to 32-bit
[ 1.827245] radeon 0000:01:00.0: radeon: using MSI.
[ 1.827275] [drm] radeon: irq initialized.
[ 3.011583] [drm:uvd_v1_0_start [radeon]] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 4.023636] [drm:uvd_v1_0_start [radeon]] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 5.035688] [drm:uvd_v1_0_start [radeon]] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 6.047740] [drm:uvd_v1_0_start [radeon]] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 7.059790] [drm:uvd_v1_0_start [radeon]] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 8.071841] [drm:uvd_v1_0_start [radeon]] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 9.083890] [drm:uvd_v1_0_start [radeon]] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 10.095939] [drm:uvd_v1_0_start [radeon]] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 11.107990] [drm:uvd_v1_0_start [radeon]] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 12.120038] [drm:uvd_v1_0_start [radeon]] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 12.139899] [drm:uvd_v1_0_start [radeon]] *ERROR* UVD not responding, giving up!!!
[ 12.139907] radeon 0000:01:00.0: failed initializing UVD (-1).
[ 13.148133] [drm:r600_ib_test [radeon]] *ERROR* radeon: fence wait timed out.
[ 13.148179] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on GFX ring (-110).
[ 13.148197] [drm:radeon_device_init [radeon]] *ERROR* ib ring test failed (-110).
[ 13.208032] [drm] radeon atom DIG backlight initialized
[ 13.208041] [drm] Radeon Display Connectors
[ 14.405759] fbcon: radeondrmfb (fb0) is primary device
[ 16.430012] radeon 0000:01:00.0: fb0: radeondrmfb frame buffer device
[ 16.444306] [drm] Initialized radeon 2.50.0 20080528 for 0000:01:00.0 on minor 1
[ 180.804054] radeon_dp_aux_transfer_native: 326 callbacks suppressed
[ 193.072054] radeon_dp_aux_transfer_native: 326 callbacks suppressed