[Bug 110838] Black screen at desktop on kernel for ICL only

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110838

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |NEEDINFO

--- Comment #15 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
[    4.878097] [drm:intel_bw_init_hw [i915]] QGV 0: DCLK=224 tRP=34 tRDPRE=14
tRAS=79 tRCD=34 tRC=113
[    4.878188] [drm:intel_bw_init_hw [i915]] BW0 / QGV 0: num_planes=4
deratedbw=7612
[    4.878273] [drm:intel_bw_init_hw [i915]] BW1 / QGV 0: num_planes=2
deratedbw=12465
[    4.878356] [drm:intel_bw_init_hw [i915]] BW2 / QGV 0: num_planes=1
deratedbw=17032

Looks like it only exposes a single QGV point, which I apparently failed to
consider. I do remember thinking about that but apparently it slipped my mind.

BTW do you have SAGV disabled in the BIOS or something? Just wondering how we
got to this state...

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