[Bug 85924] [hsw DP-to-DVI] DP hot plug fails if booted without Monitor Attached

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85924

--- Comment #54 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to oliver.grafe from comment #51)
> tried Jani's patch on a SLES / using 4.1-rc4. It improves the situation a
> lot! All active/passive DP adapters I could find now work flawlessly when
> hot-plugged into running system.
> 
> I have found one DP->VGA adapter which still does not hot-plug even with
> this patch. Please see attached drm.debug=14 output.
> 
> Thanks so much for the continuing effort to close this!

That's great news! Credits go to Todd for figuring out the problem.

Unfortunately there was some negative review feedback on the patch itself;
here's another version that *should* be functionally equivalent in your case:
http://patchwork.freedesktop.org/patch/50930

It would be much appreciated if you could test this one as well. Thanks.

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