dmesg | egrep 'drm|radeon'
[ 1.163767] [drm] Initialized drm 1.1.0 20060810
[ 1.241246] [drm] radeon kernel modesetting enabled.
[ 1.241321] fb: conflicting fb hw usage radeondrmfb vs VESA VGA - removing generic driver
[ 1.241910] [drm] initializing kernel modesetting (RV350 0x1002:0x4E51 0x174B:0x0200).
[ 1.241929] [drm] register mmio base: 0xFEAE0000
[ 1.241930] [drm] register mmio size: 65536
[ 1.243283] radeon 0000:01:00.0: putting AGP V3 device into 8x mode
[ 1.243301] radeon 0000:01:00.0: GTT: 256M 0xD0000000 - 0xDFFFFFFF
[ 1.243304] [drm] Generation 2 PCI interface, using max accessible memory
[ 1.243308] radeon 0000:01:00.0: VRAM: 256M 0x00000000B0000000 - 0x00000000BFFFFFFF (256M used)
[ 1.243318] [drm] Detected VRAM RAM=256M, BAR=256M
[ 1.243319] [drm] RAM width 128bits DDR
[ 1.243588] [drm] radeon: 256M of VRAM memory ready
[ 1.243590] [drm] radeon: 256M of GTT memory ready.
[ 1.243629] [drm] radeon: 1 quad pipes, 1 Z pipes initialized.
[ 1.245090] radeon 0000:01:00.0: WB disabled
[ 1.245100] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x00000000d0000000 and cpu addr 0xf8456000
[ 1.245103] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 1.245105] [drm] Driver supports precise vblank timestamp query.
[ 1.245135] [drm] radeon: irq initialized.
[ 1.245155] [drm] Loading R300 Microcode
[ 1.245613] [drm] radeon: ring at 0x00000000D0001000
[ 1.245636] [drm] ring test succeeded in 0 usecs
[ 1.246023] [drm] ib test succeeded in 0 usecs
[ 1.246260] [drm] Radeon Display Connectors
[ 1.246262] [drm] Connector 0:
[ 1.246264] [drm] VGA-1
[ 1.246266] [drm] DDC: 0x60 0x60 0x60 0x60 0x60 0x60 0x60 0x60
[ 1.246267] [drm] Encoders:
[ 1.246269] [drm] CRT1: INTERNAL_DAC1
[ 1.246270] [drm] Connector 1:
[ 1.246271] [drm] DVI-I-1
[ 1.246273] [drm] HPD1
[ 1.246274] [drm] DDC: 0x64 0x64 0x64 0x64 0x64 0x64 0x64 0x64
[ 1.246276] [drm] Encoders:
[ 1.246277] [drm] CRT2: INTERNAL_DAC2
[ 1.246278] [drm] DFP1: INTERNAL_TMDS1
[ 1.246279] [drm] Connector 2:
[ 1.246281] [drm] SVIDEO-1
[ 1.246282] [drm] Encoders:
[ 1.246283] [drm] TV1: INTERNAL_DAC2
[ 1.337304] [drm] fb mappable at 0xB0040000
[ 1.337307] [drm] vram apper at 0xB0000000
[ 1.337308] [drm] size 7057408
[ 1.337310] [drm] fb depth is 24
[ 1.337311] [drm] pitch is 6720
[ 1.337383] fbcon: radeondrmfb (fb0) is primary device
[ 1.427217] radeon 0000:01:00.0: fb0: radeondrmfb frame buffer device
[ 1.427219] radeon 0000:01:00.0: registered panic notifier
[ 1.427226] [drm] Initialized radeon 2.36.0 20080528 for 0000:01:00.0 on minor 0