dmesg

[    1.727496] [drm] radeon defaulting to kernel modesetting.
[    1.727502] [drm] radeon kernel modesetting enabled.
[    1.727590] fb: conflicting fb hw usage radeondrmfb vs VESA VGA - removing generic driver
[    1.728243] radeon 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    1.737366] radeon 0000:01:00.0: putting AGP V3 device into 8x mode
[    1.737375] radeon 0000:01:00.0: GTT: 128M 0xF0000000 - 0xF7FFFFFF
[    1.737388] radeon 0000:01:00.0: VRAM: 128M 0x00000000E8000000 - 0x00000000EFFFFFFF (128M used)
[    1.737468] [drm] radeon: irq initialized.
[    1.737617] [drm] radeon: 128M of VRAM memory ready
[    1.737623] [drm] radeon: 128M of GTT memory ready.
[    1.737655] [drm] radeon: 2 quad pipes, 1 Z pipes initialized.
[    1.738768] radeon 0000:01:00.0: WB disabled
[    1.750433] [drm] radeon: ring at 0x00000000F0001000
[    1.750802] [drm] radeon: ib pool ready.
[    1.751293] [drm] Radeon Display Connectors
[    2.492063] fb0: radeondrmfb frame buffer device
[    2.492080] [drm] Initialized radeon 2.7.0 20080528 for 0000:01:00.0 on minor 0