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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - 4.19 Regression - Hawaii (R9 390) boot failure - Invalid PCC GPIO / invalid powerlevel state / Fatal error during GPU init"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108781#c10">Comment # 10</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - 4.19 Regression - Hawaii (R9 390) boot failure - Invalid PCC GPIO / invalid powerlevel state / Fatal error during GPU init"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108781">bug 108781</a>
from <span class="vcard"><a class="email" href="mailto:jamespharvey20@gmail.com" title="jamespharvey20@gmail.com">jamespharvey20@gmail.com</a>
</span></b>
<pre>Bisecting results are below.
This is an Asus model STRIX-R9390-DC3OC-8GD5-GAMING.
Don't think is relevant, oter than why someone was looking at this code, but
this commit immediately trails a bunch of the vkms commits, and the crash/to
black screen happens right when amdgpu is attempting to automatically switch to
kms.
0d99889109892396a8164bf6dd178e36d3fe3166 is the first bad commit
commit 0d99889109892396a8164bf6dd178e36d3fe3166
Author: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>>
Date: Thu Jun 28 16:13:07 2018 +0300
drm/fb-helper: Eliminate the .best_encoder() usage
Instead of using the .best_encoder() hook to figure out whether a given
connector+crtc combo will work, let's instead do what userspace does and
just iterate over all the encoders for the connector, and then check
each crtc against each encoder's possible_crtcs bitmask.
v2: Avoid oopsing on NULL encoders (Daniel)
s/connector_crtc_ok/connector_has_possible_crtc/
Cc: Dhinakaran Pandiyan <<a href="mailto:dhinakaran.pandiyan@intel.com">dhinakaran.pandiyan@intel.com</a>>
Cc: Harry Wentland <<a href="mailto:harry.wentland@amd.com">harry.wentland@amd.com</a>>
Cc: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Reviewed-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Reviewed-by: Alex Deucher <<a href="mailto:alexander.deucher@amd.com">alexander.deucher@amd.com</a>>
Suggested-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Signed-off-by: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>>
Link:
<a href="https://patchwork.freedesktop.org/patch/msgid/20180628131315.14156-2-ville.syrjala@linux.intel.com">https://patchwork.freedesktop.org/patch/msgid/20180628131315.14156-2-ville.syrjala@linux.intel.com</a></pre>
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