[Bug 43487] [HD6320] Corrupted displays (LVDS and HDMI) after connecting HDMI

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https://bugs.freedesktop.org/show_bug.cgi?id=43487

--- Comment #1 from Rafał Miłecki <zajec5 at gmail.com> 2011-12-03 03:23:42 PST ---
** LVDS corruption **

LVDS corruption consists of two problems:
1) Display is corrupted
2) Everything is moved (bottom and right parts of display are black)

Ad 1
After booting (without HDMI connected) register 0x6818 is set to 0x00000640.
When I connect HDMI, driver changes it to 0x00000580. I have no idea why does
it happen, but it's source of the corruption. Setting it back with:
avivotool regset 0x6818 0x00000640
removes corruption. I believe register is defined as:
#define EVERGREEN_GRPH_PITCH                            0x6818
With fglrx register 0x6818 is set to 0x640 all the time (with HDMI and without)

Ad 2
After booting (without HDMI connected) register 0x6810 is set to 0x00000000.
When I connect HDMI, driver changes it to 0x00142000. It's the source of moved
display. Setting it back with:
avivotool regset 0x6810 0x00000000
removes movement. I believe register is defined as:
#define EVERGREEN_GRPH_PRIMARY_SURFACE_ADDRESS          0x6810
With fglrx register 0x6810 is set to 0 all the time (with HDMI and without)

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