[Bug 107781] amdgpu hangs on resume on Lenovo A475

[Bug 107781] amdgpu hangs on resume on Lenovo A475

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https://bugs.freedesktop.org/show_bug.cgi?id=107781

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Driver/AMDgpu               |DRM/AMDgpu
         QA Contact|xorg-team@lists.x.org       |
           Assignee|xorg-driver-ati@lists.x.org |dri-devel@lists.freedesktop
                   |                            |.org
            Product|xorg                        |DRI

--- Comment #3 from Michel Dänzer <michel@daenzer.net> ---
Did it work with older kernels?

Does iommu=soft on the kernel command line avoid the problem?

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[Bug 107781] amdgpu hangs on resume on Lenovo A475

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https://bugs.freedesktop.org/show_bug.cgi?id=107781

--- Comment #4 from Alex Findler <walthervondervogelweide@gmx.de> ---
I've tried with all kernels that Fedora offered during the last two months,
including 4.16 varieties. 

These are the kernel options I tried:
radeon.cik_support=0 amdgpu.cik_support=1 scsi_mod.scan=sync
amdgpu.gpu_recovery=1 amdgpu.dc=1

I have now added the option iommu=soft, and it seems to solve the problem! I
have tried suspend via script (echo mem > /sys/power/state), via hardware
button, and via plasmashell option, and all come back, including wake-up by lid
signal. I'll test this for a couple of days now and see if it works
persistently, then report back. 

Thanks for your quick reaction, it is much appreciated.

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[Bug 107781] amdgpu hangs on resume on Lenovo A475

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https://bugs.freedesktop.org/show_bug.cgi?id=107781

--- Comment #5 from Michel Dänzer <michel@daenzer.net> ---
Any chance you can try if the problem also occurs with an upstream 4.17 or 4.18
kernel?

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[Bug 107781] amdgpu hangs on resume on Lenovo A475

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https://bugs.freedesktop.org/show_bug.cgi?id=107781

--- Comment #6 from Alex Findler <walthervondervogelweide@gmx.de> ---
I was afraid you'd ask that. Last time I built a kernel myself I was on
Slackware 8. But I cloned the linux git repo yesterday in anticipation. I'll
give it a try.

https://fedoraproject.org/wiki/Building_a_custom_kernel

I'll use these instructions. Which remote and baseline should I choose?

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[Bug 107781] amdgpu hangs on resume on Lenovo A475

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https://bugs.freedesktop.org/show_bug.cgi?id=107781

--- Comment #7 from Michel Dänzer <michel@daenzer.net> ---
(In reply to Alex Findler from comment #6)
> I'll use these instructions. Which remote and baseline should I choose?

The linux-4.17.y or linux-4.18.y branch from linux-stable.git .

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[Bug 107781] amdgpu hangs on resume on Lenovo A475

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https://bugs.freedesktop.org/show_bug.cgi?id=107781

--- Comment #8 from Alex Findler <walthervondervogelweide@gmx.de> ---
med@sorceress:~ 0> uname -av
Linux sorceress 4.18.5med+ #1 SMP Tue Sep 4 17:42:26 CEST 2018 x86_64 x86_64
x86_64 GNU/Linux

So far, so good. I booted with these kernel options: 

resume=/dev/mapper/fedora_linux-swap rd.lvm.lv=fedora_linux/root
rd.luks.uuid=luks-deadfb82-77b2-4047-89d9-ea0ba6f38d03
rd.lvm.lv=fedora_linux/swap rhgb quiet uvcvideo.quirks=0x100 scsi_mod.scan=sync

And suspend appears to work. I'll keep testing this for a couple of days. If
you want me to try something specific, I'd be glad to do so.

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[Bug 107781] amdgpu hangs on resume on Lenovo A475

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https://bugs.freedesktop.org/show_bug.cgi?id=107781

Alex Findler <walthervondervogelweide@gmx.de> changed:

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

--- Comment #9 from Alex Findler <walthervondervogelweide@gmx.de> ---
I've suspended by closing the lid, pushing the power button, using the Plasma
option, docked, undocked, docked while suspended, and it all works quite well
with 4.18.5.

Thank you very much for this quick resolution, thanks for the good work.

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