[Bug 68451] [regression] Baytrail/T video no longer works on ASUS T100TA
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Wed Feb 12 00:28:16 PST 2014
https://bugzilla.kernel.org/show_bug.cgi?id=68451
--- Comment #25 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to Alan from comment #24)
> c/o danvet
>
> Correct workaround for now is: video=VGA-1:1366x768e
>
> (note the e: that avoids the need to revert the 3.13 change)
That's a relief.
Please attach /sys/kernel/debug/dri/0/i915_opregion so we can have a look at
the VBT. The dmesg says
[ 34.955292] [drm:parse_mipi], No MIPI BDB found
(missing MIPI bios block) so we need to confirm whether that's correct.
The DSI displays are essentially non-discoverable, and that block is supposed
to be there. I hear rumours this might not always be the case. Without it, we
would have to work with just what the BIOS has set up in the relevant
registers.
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