[Bug 85107] A10-7800: Boot problems (CPU stuck) and dpm not working correctly

[Bug 85107] A10-7800: Boot problems (CPU stuck) and dpm not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=85107

Michel Dänzer <michel@daenzer.net> changed:

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

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[Bug 85107] A10-7800: Boot problems (CPU stuck) and dpm not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=85107

--- Comment #6 from Marcel Witte <wittemar@gmail.com> ---
As written in the first comment the clocks never change. Running vblank_mode=0
glxgears does not change the clocks, also

echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level

makes no difference to the values.

The initial value of
/sys/class/drm/card0/device/power_dpm_force_performance_level is "auto".

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[Bug 85107] A10-7800: Boot problems (CPU stuck) and dpm not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=85107

--- Comment #7 from Alex Deucher <agd5f@yahoo.com> ---
does setting radeon.bapm=0 change anything with respect to the GPU clocks?

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[Bug 85107] A10-7800: Boot problems (CPU stuck) and dpm not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=85107

--- Comment #8 from Marcel Witte <wittemar@gmail.com> ---
no it does only "fix" the CPU stuck errors

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[Bug 85107] A10-7800: Boot problems (CPU stuck) and dpm not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=85107

--- Comment #9 from Marcel Witte <wittemar@gmail.com> ---
Today I tried to use radeon.dpm=0 to get the full performance, but I noticed
that with radeon.dpm=0 I get the CPU stuck errors again, even with
radeon.bapm=0. So the only way to boot without these errors is "radeon.bapm=0"
or "radeon.bapm=0 radeon.dpm=1".

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[Bug 85107] A10-7800: Boot problems (CPU stuck) and dpm not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=85107

--- Comment #10 from Marcel Witte <wittemar@gmail.com> ---
Using linux-next, the output of /sys/kernel/debug/dri/0/radeon_pm_info has
changed a bit, but none of the problems are solved.

running glxgears or idle:

uvd    disabled
vce    disabled
power level 0    sclk: 35122 vddc: 4900

running qvdpautest:

uvd    enabled
vce    disabled
power level 0    sclk: 35122 vddc: 4900

So it seems the driver is detecting the vdpau usage but it is not switching the
power level.

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[Bug 85107] A10-7800: Boot problems (CPU stuck) and dpm not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=85107

--- Comment #11 from Marcel Witte <wittemar@gmail.com> ---
To check if it is a hardware problem or a problematic bios setting I installed
openSUSE 13.1 in parallel, there I was able to test with fglrx. And it is
working well, the power management is working and the clock is getting up to
the max when running glxgears (tested with aticonfig --odgc).

So this has to be a driver bug... Can you give me any hint how I can debug this
problem? I'm a software engineer myself (but mostly Java) and can test patches
or "play" with the code if you say me where... ;)

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[Bug 85107] A10-7800: Boot problems (CPU stuck) and dpm not working correctly

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--- Comment #12 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 108260
  --> https://bugs.freedesktop.org/attachment.cgi?id=108260&action=edit
disable some dpm features

You might try this patch.  If it helps try to narrow down which specific
features are causing the problem.  You might also check your bios configuration
and see if any of those settings make a difference.  All of the relevant power
management code for your asic is in kv_dpm.c and kv_smc.c.

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[Bug 85107] A10-7800: Boot problems (CPU stuck) and dpm not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=85107

--- Comment #13 from Marcel Witte <wittemar@gmail.com> ---
Thanks for the patch. I still need radeon.bapm=0 to boot properly, but with
setting

pi->enable_nb_dpm = false;

the clock is getting higher and so I have the full performance. Finally I can
watch HD videos with VDPAU now :)

I run this tests using kernel 3.18-rc1. I do not have looked at the code
further, that is the consequence of this setting? Could there be any matching
BIOS setting? How can I further debug why my system is needing this change?

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[Bug 85107] A10-7800: Boot problems (CPU stuck) and dpm not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=85107

--- Comment #14 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 108473
  --> https://bugs.freedesktop.org/attachment.cgi?id=108473&action=edit
dpm fix

(In reply to Marcel Witte from comment #13)
> Thanks for the patch. I still need radeon.bapm=0 to boot properly, but with
> setting
> 
> pi->enable_nb_dpm = false;
> 
> the clock is getting higher and so I have the full performance. Finally I
> can watch HD videos with VDPAU now :)
> 

Great.  The attached patch should allow your system to work out of the box.

> I run this tests using kernel 3.18-rc1. I do not have looked at the code
> further, that is the consequence of this setting? Could there be any
> matching BIOS setting? How can I further debug why my system is needing this
> change?

nb dpm is northbridge dpm.  You might check and see if there are any bios
options related to the northbridge that workaround the issue.

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[Bug 85107] A10-7800: Boot problems (CPU stuck) and dpm not working correctly

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Martin Peres <martin.peres@free.fr> changed:

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

--- Comment #15 from Martin Peres <martin.peres@free.fr> ---
-- 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/545.

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