[Bug 191571] New: AMD APU R4 hangs during hibernation - regression

[Bug 191571] New: AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

            Bug ID: 191571
           Summary: AMD APU R4 hangs during hibernation - regression
           Product: Drivers
           Version: 2.5
    Kernel Version: from 4.7 up to current
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: tem_pos@o2.pl
        Regression: No

Created attachment 249371
  --> https://bugzilla.kernel.org/attachment.cgi?id=249371&action=edit
AMD Radeon hangs during hibernation - regression.

I'am using Arch Linux.
After upgrade the kernel from 4.6 to 4.7 I cannot hibernate my Lenovo g50-45
netbook - AMD a6 6310 with radeon r4 Beema.
When system is triggered for hibernation screem gets dimmed and netbook hangs.
I have to power it off by pressing for longer period of time the power button.
Fans are getting on full rpms and machine is getting hot.

Bisected changes and the first bad commit is - drm/radeon: hard reset r600 and
newer GPU when hibernating. (commit 274ad65c9d02bdcbee9bae045517864c3521d530)

Bios - file attached.
CPU info - file attached.
Log from boot/hibernate - file attached.
Bisecting log - file attached.

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[Bug 191571] AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

--- Comment #1 from Przemek <tem_pos@o2.pl> ---
Created attachment 249381
  --> https://bugzilla.kernel.org/attachment.cgi?id=249381&action=edit
lscpu

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[Bug 191571] AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

--- Comment #2 from Przemek <tem_pos@o2.pl> ---
Created attachment 249391
  --> https://bugzilla.kernel.org/attachment.cgi?id=249391&action=edit
dmesg

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[Bug 191571] AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

Przemek <tem_pos@o2.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #249371|AMD Radeon hangs during     |dmidecode
        description|hibernation - regression.   |

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[Bug 191571] AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

--- Comment #3 from Przemek <tem_pos@o2.pl> ---
Created attachment 249401
  --> https://bugzilla.kernel.org/attachment.cgi?id=249401&action=edit
bisect log

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[Bug 191571] AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

Przemek <tem_pos@o2.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Regression|No                          |Yes

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[Bug 191571] AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

Felix Schwarz <felix.schwarz@oss.schwarz.eu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |felix.schwarz@oss.schwarz.e
                   |                            |u

--- Comment #4 from Felix Schwarz <felix.schwarz@oss.schwarz.eu> ---
according to the reporter's bisect log (comment #3) the first bad commit is:

commit 274ad65c9d02bdcbee9bae045517864c3521d530
Author: Jérome Glisse <jglisse@redhat.com>
Date:   Fri Mar 18 16:58:39 2016 +0100

    drm/radeon: hard reset r600 and newer GPU when hibernating.

    Some GPU block like UVD and VCE require hard reset to be properly
    resume if there is no real powerdown of the asic like during various
    hibernation step. This patch perform such hard reset.

    Reviewed-by: Christian König <christian.koenig@amd.com>
    Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
    Cc: Alex Deucher <alexander.deucher@amd.com>
    Cc: Christian König <christian.koenig@amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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[Bug 191571] AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

--- Comment #5 from Przemek <tem_pos@o2.pl> ---
I can confirm that this commit is makeing problems on A6 6310 APU.

I have compiled kernel 4.9 with reversed patch
[274ad65c9d02bdcbee9bae045517864c3521d530] and I can hibernate without
problems.

Moreover I have checked UVD hardware acceleration of h264 codec in mplayer's
vdpau option and it is working correctly. I have an accelerated playback with
ffmpeg12vdpau codec after resume from hibernate.

So maby forcing A6 GPU - r4 Mullins/Beema to hard reset when wakeing up from
hibernate state isn't necessarily mandatory.

I am also wondering, (cause of the experimentary support of CIK GPU's in amdgpu
driver as in the future GPU's from Sea Island and Southern Island families
support would be implemented in amdgpu) if there is similar patch commited to
amdgpu and if so I am aware that it could also affect the hibernate process on
A6 6310 APU.

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[Bug 191571] AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

--- Comment #6 from Przemek (soprwa@gmail.com) ---
Created attachment 258401
  --> https://bugzilla.kernel.org/attachment.cgi?id=258401&action=edit
proposed patch

As the problem still persist in kernel 4.13 I have made a little patch for it.
With this patch applied to source tree my laptop can hibernate and resume
successfully.
As I am not a programmer please consider if this problem can be resolved in
such way.
Thanks,
Przemek.

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[Bug 191571] AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

Alex Deucher (alexdeucher@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #7 from Alex Deucher (alexdeucher@gmail.com) ---
Created attachment 258405
  --> https://bugzilla.kernel.org/attachment.cgi?id=258405&action=edit
possible fix

How about just disabling the reset on all APUs.

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[Bug 191571] AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

--- Comment #8 from Przemek (soprwa@gmail.com) ---
I cant say about all APUs, but I have tested the patch, and on MULLINS chip
this solution is working perfect.
Thanks,
Przemek.

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[Bug 191571] AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

Przemek (soprwa@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |CODE_FIX

--- Comment #9 from Przemek (soprwa@gmail.com) ---
Fixed upstream by commit 820608548737e315c6f93e3099b4e65bde062334.

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