[Bug 100058] amdgpu/dpm: NULL pointer dereference

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=100058

Martin Peres  changed:

   What|Removed |Added

 Resolution|--- |MOVED
 Status|NEW |RESOLVED

--- Comment #14 from Martin Peres  ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/147.

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[Bug 100058] amdgpu/dpm: NULL pointer dereference

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=100058

--- Comment #13 from Edward O'Callaghan  ---
Created attachment 130967
  --> https://bugs.freedesktop.org/attachment.cgi?id=130967=edit
dpm patch

@Adam, please try applying the attached patch and let me know if it helps with
your issue?

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[Bug 100058] amdgpu/dpm: NULL pointer dereference

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=100058

--- Comment #12 from Edward O'Callaghan  ---
@Alex Deucher I confirmed with Adam that, even with c10c8f7 he still has the
null pointer issue.

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[Bug 100058] amdgpu/dpm: NULL pointer dereference

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=100058

--- Comment #11 from Edward O'Callaghan  ---
(In reply to Adam Wolk from comment #10)
> > Do the patches in bug 99387 help?
> 
> This is a machine I use for work unfortunately I can't fiddle with it more.
> 
> Regarding the flickering issue I reported it as a separate bug.
> 
> https://bugs.freedesktop.org/show_bug.cgi?id=100386

[edward@skytop linux]$ git tag --contains c10c8f7 -l
v4.10.0
v4.11-rc1
v4.11-rc2
v4.11-rc3
v4.11-rc4
v4.11-rc5
v4.11-rc6
v4.11-rc7

@Adam, can you please try updating to at minimum kernel v4.10.0 and seeing if
that fixes the issue for you?

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[Bug 100058] amdgpu/dpm: NULL pointer dereference

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=100058

--- Comment #10 from Adam Wolk  ---
> Do the patches in bug 99387 help?

This is a machine I use for work unfortunately I can't fiddle with it more.

Regarding the flickering issue I reported it as a separate bug.

https://bugs.freedesktop.org/show_bug.cgi?id=100386

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[Bug 100058] amdgpu/dpm: NULL pointer dereference

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=100058

--- Comment #9 from Michel Dänzer  ---
(In reply to Adam Wolk from comment #7)
> Regarding the display flicking on/off (the effect feels like changing
> resolution - the way it goes out and back). This is completely mitigated by
> running DRI_PRIME=1 glxgears hence why I thought it might be AMD driver
> related.

It can't really be directly related, since the display isn't connected to the
AMD GPU. I'd report it against the i915 kernel driver.

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[Bug 100058] amdgpu/dpm: NULL pointer dereference

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https://bugs.freedesktop.org/show_bug.cgi?id=100058

--- Comment #8 from Alex Deucher  ---
Do the patches in bug 99387 help?

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[Bug 100058] amdgpu/dpm: NULL pointer dereference

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=100058

--- Comment #7 from Adam Wolk  ---
Regarding the display flicking on/off (the effect feels like changing
resolution - the way it goes out and back). This is completely mitigated by
running DRI_PRIME=1 glxgears hence why I thought it might be AMD driver
related.

Regardless, the main thing reported here is a null pointer dereference in the
kernel and a system unable to boot completely.

I can live with the flicker - I just workaround it by running DRI_PRIME=1
glxgears all day...

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[Bug 100058] amdgpu/dpm: NULL pointer dereference

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=100058

--- Comment #6 from Michel Dänzer  ---
FWIW, since all display outputs are connected to the iGPU, it's unlikely that
using amdgpu instead of radeon will have any effect on the external display
turning on and off. You'd have to bring that up with the iGPU drivers.

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[Bug 100058] amdgpu/dpm: NULL pointer dereference

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=100058

--- Comment #5 from Alex Deucher  ---
Possibly a duplicate of bug 99387.

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[Bug 100058] amdgpu/dpm: NULL pointer dereference

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=100058

--- Comment #4 from Adam Wolk  ---
Here is the xrandr output.

[mulander@napalm ~]$ xrandr
Screen 0: minimum 8 x 8, current 3286 x 1080, maximum 32767 x 32767
eDP1 connected 1366x768+1920+0 (normal left inverted right x axis y axis) 340mm
x 190mm
   1366x768  59.97*+
   1024x768  60.00
   1024x576  60.00
   960x540   60.00
   800x600   60.3256.25
   864x486   60.00
   640x480   59.94
   720x405   60.00
   680x384   60.00
   640x360   60.00
DP1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 480mm x
270mm
   1920x1080 60.00*+
   1680x1050 59.95
   1280x1024 75.0260.02
   1152x864  75.00
   1024x768  75.0360.00
   800x600   75.0060.32
   640x480   75.0059.94
   720x400   70.08
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

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[Bug 100058] amdgpu/dpm: NULL pointer dereference

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=100058

--- Comment #3 from Michel Dänzer  ---
(In reply to Adam Wolk from comment #0)
> I noticed my external display constantly turning on and off unless a DRI app
> is active (ie. running DRI_PRIME=1 glxgears).

Which GPU is the external display connected to? If you're not sure, attach the
output of xrandr.

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[Bug 100058] amdgpu/dpm: NULL pointer dereference

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=100058

Edward O'Callaghan  changed:

   What|Removed |Added

Summary|NULL pointer dereference|amdgpu/dpm: NULL pointer
   |when blacklisting radeon|dereference

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