[Bug 108773] i915.fastboot=1 is broken on Thinkpad S1 Yoga (Haswell)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108773

Ville Syrjala <ville.syrjala at linux.intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #28 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to Johannes Krampf from comment #27)
> Created attachment 144452 [details]
> Dmesg of drm-tip fastboot with patch "Do not touch the PCH SSC..."
> 
> I synced to the most recent drm-tip, applied the patch and was able to boot
> with fastboot and graphical output working.
> 
> I've attached the dmesg output with drm.debug=0xe.

Nice. Thanks for testing.

Fix is in:
commit b16c7ed95caf270075c52faad0af8f4cb57ae979
Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
Date:   Tue Jun 4 23:09:29 2019 +0300

    drm/i915: Do not touch the PCH SSC reference if a PLL is using it

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