[Openchrome-devel] [Bug 65591] [drm-openchrome] Commit 484c66c400daa76bd6840f195e8effa9d39dfb3c breaks KMS on VX900 with HDMI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65591

--- Comment #10 from Pascal Ernster <bugs.freedesktop.org at hardfalcon.net> ---
Created attachment 84722
  --> https://bugs.freedesktop.org/attachment.cgi?id=84722&action=edit
via_hdmi.c (patched to make HDMI work on VX900 and thrown in a few DRM_INFO()
calls to ease debugging

This is via_hdmi.c with my patch added (see line 435) to make HDMI work. I've
also thrown in some DRM_INFO() calls to ease debugging.

Interestingly, this patch makes the HDMI port be treated as a DVI port - at
least as far as /sys/class/drm/card0-*/edid is concerned. Please do also note
that the EDID seems to change depending on my patch being applied or not.

With my patch, I get a different EDID record from
/sys/class/drm/card0-DVI-D-1/edid than I get without the patch from
/sys/class/drm/card0-HDMI-A-1/edid. The screen also works with my patch
applied, as described in the bug report, so I had to use ssh to get the dmesg
and the EDID while running the unpatched module (see following attachments).

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