Presumably broken in 3.8.13.7 by
commit c4c3bc93e257d7d40745eff89b1c556d53a4a9d6
Author: Alex Deucher <[email protected]>
Date: Tue Jul 30 00:22:53 2013 -0400
drm/radeon/atom: initialize more atom interpretor elements to 0
BugLink: http://bugs.launchpad.net/bugs/1221794
commit 42a21826dc54583cdb79cc8477732e911ac9c376 upstream.
The ProcessAuxChannel table on some rv635 boards assumes
the divmul members are initialized to 0 otherwise we get
an invalid fb offset since it has a bad mask set when
setting the fb base. While here initialize all the
atom interpretor elements to 0.
and fixed (& currently queued for 3.8.13.11) with
commit 91f3a6aaf280294b07c05dfe606e6c27b7ba3c72
Author: Alex Deucher <[email protected]>
Date: Mon Sep 9 10:54:22 2013 -0400
drm/radeon/atom: workaround vbios bug in transmitter table on rs880 (v2)
The OUTPUT_ENABLE action jumps past the point in the coder where
the data_offset is set on certain rs780 cards. This worked
previously because the OUTPUT_ENABLE action is always called
immediately after the ENABLE action so the data_offset remained
set. In 6f8bbaf568c7f2c497558bfd04654c0b9841ad57
(drm/radeon/atom: initialize more atom interpretor elements to 0),
we explictly reset data_offset to 0 between atom calls which then
caused this to fail. The fix is to just skip calling the
OUTPUT_ENABLE action on the problematic chipsets. The ENABLE
action does the same thing and more. Ultimately, we could
probably drop the OUTPUT_ENABLE action all together on DCE3
asics.
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https://bugs.launchpad.net/bugs/1233061
Title:
HDMI not working after update to linux image 3.8.0.31.46
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