linux-kernel - Re: 274ad65c9d02 ("drm/radeon: hard reset r600 and newer GPU when hibernating.")

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Date:	Wed, 8 Jun 2016 16:18:12 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Jerome Glisse <jglisse@...hat.com>
Cc:	Christian König <christian.koenig@....com>,
	Alex Deucher <alexander.deucher@....com>,
	dri-devel@...ts.freedesktop.org,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: 274ad65c9d02 ("drm/radeon: hard reset r600 and newer GPU when
 hibernating.")

On Wed, Jun 08, 2016 at 10:06:23AM -0400, Jerome Glisse wrote:
> To be clear, you mean that after hibernation video acceleration keeps working ?

Apparently. At lest the vdpau output looks fine to me.

> Can you copy radeon dmesg after hibernation cycle (once you resumed
> from hibernation).

$ dmesg | grep -Ei "(radeon|drm)"

...

  (boot messages)

...
[    8.149356] fbcon: radeondrmfb (fb0) is primary device
[    8.218800] radeon 0000:01:00.0: fb0: radeondrmfb frame buffer device
[    8.238402] [drm] Initialized radeon 2.45.0 20080528 for 0000:01:00.0 on minor 0

<-- hibernate.

[   64.711657] [drm] enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0
[   64.714898] [drm] PCIE GART of 512M enabled (table at 0x0000000000142000).
[   64.714920] radeon 0000:01:00.0: WB enabled
[   64.714923] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000020000c00 and cpu addr 0xffff88042b342c00
[   64.715123] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x00000000000521d0 and cpu addr 0xffffc900030121d0
[   64.745988] [drm] ring test on 0 succeeded in 1 usecs
[   64.920633] [drm] ring test on 5 succeeded in 1 usecs
[   64.920637] [drm] UVD initialized successfully.
[   64.920652] [drm] ib test on ring 0 succeeded in 0 usecs
[   65.128759] ata1.00: supports DRM functions and may not be fully accessible
[   65.128799] ata2.00: supports DRM functions and may not be fully accessible
[   65.133700] ata1.00: supports DRM functions and may not be fully accessible
[   65.133811] ata2.00: supports DRM functions and may not be fully accessible
[   65.566744] [drm] ib test on ring 5 succeeded

Let me know if you need more stuff dumped.

-- 
Regards/Gruss,
    Boris.

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