[Bug 198123] Console is the wrong color at boot with radeon 6670

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=198123

--- Comment #47 from shibe at tuta.io ---
I analysed individual bits in register dumps. Some bits are set in all 8 dumps
with black background and unset in most of dumps with grey background.

The value at 0x69F0 is 0x00401004 in all black dumps, vary in grey dumps.

The value at 0x69FC is 0x00000002 in all black dumps, 0x00000000 in all grey
dumps.

Other registers, least significant bit first:

6BB0  0 + ? ? ? ? ? ?  ? ? ? 0 0 0 0 0  0 0 0 0 0 0 0 0  0 0 0 0 0 0 0 0
6E98  ? ? + ? ? ? ? ?  ? 1 0 0 0 0 0 0  0 0 0 0 0 0 0 0  0 0 0 0 0 0 0 0
6E9C  ? ? + ? ? ? ? ?  ? 1 0 0 0 0 0 0  ? ? ? ? ? ? ? ?  ? ? ? 0 0 0 0 0

Legend:
0 always 0 in black dumps
1 always 1 in black dumps
? vary in black dumps
+ always 1 in black dumps, usually 0 in grey dumps

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