[Bug 97529] i915 kms turns display black on Asus T100HA (Intel Atom x5-Z8500)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97529

Elie Morisse <syniurge at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |syniurge at gmail.com

--- Comment #6 from Elie Morisse <syniurge at gmail.com> ---
Created attachment 126596
  --> https://bugs.freedesktop.org/attachment.cgi?id=126596&action=edit
dmesg after "drm/i915: Ignore OpRegion panel type except on select machines"

https://cgit.freedesktop.org/drm-intel/commit/?id=ea54ff4008892b46c7a3e6bc8ab8aaec9d198639
sounded promising and got rid of the warnings about display timings but still
results in a black screen with new errors:

[    6.680073] WARNING: CPU: 1 PID: 6 at
drivers/gpu/drm/i915/intel_display.c:14141
intel_atomic_commit_tail+0x111a/0x1120 [i915]
[    6.680074] pipe A vblank wait timed out

[   27.111348] [drm:drm_atomic_helper_commit_cleanup_done] *ERROR*
[CRTC:26:pipe A] flip_done timed out
[   37.351009] [drm:drm_atomic_helper_commit_cleanup_done] *ERROR*
[CRTC:26:pipe A] flip_done timed out

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