Hi list.  I think some of you have Radeon video cards, right?  I'm having
trouble getting my built-in video card to work:

00:00.0 Host bridge: Advanced Micro Devices [AMD] Family 12h Processor Root Complex
00:01.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI BeaverCreek [Radeon HD 6530D]

The problem is that the screen goes black during boot if KMS is enabled,
but works just fine when disabled.

I found an error in dmesg, but I don't know how to fix it:

[drm] Initialized drm 1.1.0 20060810
[drm] radeon defaulting to kernel modesetting.
[drm] radeon kernel modesetting enabled.
[drm] initializing kernel modesetting (SUMO 0x1002:0x964A 0x17AA:0x3625).
[drm] register mmio base: 0xFEB00000
[drm] register mmio size: 262144
ATOM BIOS: General
radeon 0000:00:01.0: VRAM: 512M 0x0000000000000000 - 0x000000001FFFFFFF (512M used)
radeon 0000:00:01.0: GTT: 512M 0x0000000020000000 - 0x000000003FFFFFFF
[drm] Detected VRAM RAM=512M, BAR=256M
[drm] RAM width 32bits DDR
[TTM] Zone  kernel: Available graphics memory: 1766482 kiB
[TTM] Initializing pool allocator
[TTM] Initializing DMA pool allocator
[drm] radeon: 512M of VRAM memory ready
[drm] radeon: 512M of GTT memory ready.
[drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[drm] Driver supports precise vblank timestamp query.
radeon 0000:00:01.0: irq 42 for MSI/MSI-X
radeon 0000:00:01.0: radeon: using MSI.
[drm] radeon: irq initialized.
[drm] GART: num cpu pages 131072, num gpu pages 131072
[drm] radeon: ib pool ready.
[drm] Loading SUMO Microcode
r600_cp: Failed to load firmware "radeon/SUMO_pfp.bin"
[drm:evergreen_startup] *ERROR* Failed to load firmware!
radeon 0000:00:01.0: disabling GPU acceleration


BTW, I did compile in all three SUMO firmware files, and SUMO_pfp.bin
is one of them.  Should I see messages for the other two *if* they did
load okay?  I don't know if they did or not.