[Bug 98987] [RS690] BUG: soft lockup when radeon modesetting

[Bug 98987] [RS690] BUG: soft lockup when radeon modesetting

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98987

            Bug ID: 98987
           Summary: [RS690] BUG: soft lockup when radeon modesetting
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: high
         Component: DRM/Radeon
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: vaclav.ovsik@gmail.com

Created attachment 128323
  --> https://bugs.freedesktop.org/attachment.cgi?id=128323&action=edit
logged using netconsole - kernel 4.8.7 (Debian kernel)

Dear developers,
I'm unable to boot into functional system with KMS radeon. When
radeon.modeset=0 on kernel command-line system it starts and run OK.
Without disabled modeset the kernel 4.7, 4.8, 4.9-rc7 with 90% probability
locks or crash.
I'm running Debian unstable and tried Debian kernels 4.7, 4.8 from Debian and
compile 4.9rc7 vanilla kernel.

Attached logs through netconsole.

Any idea what I can test?

Thanks
-- 
Zito

ref: debian bug #845382 -
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845382

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[Bug 98987] [RS690] BUG: soft lockup when radeon modesetting

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https://bugs.freedesktop.org/show_bug.cgi?id=98987

--- Comment #1 from Václav Ovsík <vaclav.ovsik@gmail.com> ---
Created attachment 128324
  --> https://bugs.freedesktop.org/attachment.cgi?id=128324&action=edit
logged using netconsole - 4.8.7 - soft lockup

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[Bug 98987] [RS690] BUG: soft lockup when radeon modesetting

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https://bugs.freedesktop.org/show_bug.cgi?id=98987

Václav Ovsík <vaclav.ovsik@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #128323|logged using netconsole -   |logged using netconsole -
        description|kernel 4.8.7 (Debian        |4.8.7 - NULL pointer
                   |kernel)                     |

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[Bug 98987] [RS690] BUG: soft lockup when radeon modesetting

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https://bugs.freedesktop.org/show_bug.cgi?id=98987

--- Comment #2 from Václav Ovsík <vaclav.ovsik@gmail.com> ---
Created attachment 128325
  --> https://bugs.freedesktop.org/attachment.cgi?id=128325&action=edit
logged using netconsole - 4.9.0-rc7 - NULL pointer

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[Bug 98987] [RS690] BUG: soft lockup when radeon modesetting

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https://bugs.freedesktop.org/show_bug.cgi?id=98987

--- Comment #3 from Václav Ovsík <vaclav.ovsik@gmail.com> ---
Created attachment 128326
  --> https://bugs.freedesktop.org/attachment.cgi?id=128326&action=edit
logged using netconsole - 4.9.0-rc7 - soft lockup

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[Bug 98987] [RS690] BUG: soft lockup when radeon modesetting

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https://bugs.freedesktop.org/show_bug.cgi?id=98987

--- Comment #4 from Václav Ovsík <vaclav.ovsik@gmail.com> ---
today I inserted into MB Asus M2A-VM HDMI PCI-E card HD7770. With HD7770 the
modeset works OK without any crash/lockup. Xserver started OK too. Loaded was
radeon driver. The bug in radeon driver is in a part specific to RS690 chip so.

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[Bug 98987] [RS690] BUG: soft lockup when radeon modesetting

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https://bugs.freedesktop.org/show_bug.cgi?id=98987

--- Comment #5 from Vedran Miletić <vedran@miletic.net> ---
Has KMS ever worked on that card for you? If yes, can you test older kernels?

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[Bug 98987] [RS690] BUG: soft lockup when radeon modesetting

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https://bugs.freedesktop.org/show_bug.cgi?id=98987

--- Comment #6 from Christian König <deathsimple@vodafone.de> ---
Setting radeon.modeset=0 is not longer supported since the removal of UMS
support, so setting this options just blacklists the driver completely.

That looks like a bug in the HDMI audio handling code, we had similar issues on
other hardware generations as well. Maybe the handling routine for RS690 is
still not in the correct order.

Anyway please try radeon.audio=0 as well.

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[Bug 98987] [RS690] BUG: soft lockup when radeon modesetting

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https://bugs.freedesktop.org/show_bug.cgi?id=98987

--- Comment #7 from Václav Ovsík <vaclav.ovsik@gmail.com> ---
Bing - HDMI audio is probably a source of problem.

I tried to add radeon.audio=0. I tested this before already, but I tried this
time again with 4.9-rc7. No bug in console appeared, but kernel lock down
(<Alt>-<SysRq>-B don't worked). I tried I think 3-times - no OOPS on console,
only hang. Then I get idea to look into BIOS if HDMI audio is enabled there and
really, HDMI was disabled completely. I enable HDMI in the BIOS and disable
HDMI audio only  and system started normaly. I tried combinations:

BIOS    BIOS            radeon.audio=0
HDMI    HDMI audio
----------------------------------------------------------------
0       -               no                      OOPS
0       -               yes                     OOPS
yes     yes             no                      OOPS
yes     yes             yes                     OOPS
yes     no              no                      OK

So to avoid problems with the radeon driver the HDMI audio must be disabled in
BIOS and it is possible only if the HDMI connector is enabled, because
otherwise the option (HDMI audio) is greyed.
I can't remember if I had this setting in the past, maybe yes. Disabled HDMI
may be the result of BIOS "Load system default", because other flaws on this
mobo with networking some time ago (.

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[Bug 98987] [RS690] BUG: soft lockup when radeon modesetting

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https://bugs.freedesktop.org/show_bug.cgi?id=98987

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

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

--- Comment #8 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/762.

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