[    4.078627] [drm] Initialized drm 1.1.0 20060810
[    4.115274] [drm] radeon kernel modesetting enabled.
[    4.128304] radeon 0000:00:00.0: Xen PCI mapped GSI16 to IRQ19
[    4.128891] [drm] initializing kernel modesetting (CAICOS 0x1002:0x6779 0x1043:0x03DA).
[    4.128906] [drm] register mmio base: 0xEFA20000
[    4.128907] [drm] register mmio size: 131072
[    4.128919] radeon 0000:00:00.0: Invalid ROM contents
[    4.128931] radeon 0000:00:00.0: Invalid ROM contents
[    4.128955] [drm:radeon_get_bios [radeon]] *ERROR* Unable to locate a BIOS ROM
[    4.128961] radeon 0000:00:00.0: Fatal error during GPU init
[    4.128965] [drm] radeon: finishing device.
[    4.139323] radeon: probe of 0000:00:00.0 failed with error -22