[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

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https://bugs.freedesktop.org/show_bug.cgi?id=104738

            Bug ID: 104738
           Summary: Radeon HD 6970M/6990M crash on iMac on boot - only
                    nomodeset helps
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: hansmatros76@gmail.com

Created attachment 136905
  --> https://bugs.freedesktop.org/attachment.cgi?id=136905&action=edit
dmesg

Dear Developers!

I have this bug on different Linux kernels. Only with 4.15.0-041500rc8 i am
able to boot, but there is no hardware acceleration.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743427

If you need more informations please let me know.

Best regards,

Hans

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[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

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https://bugs.freedesktop.org/show_bug.cgi?id=104738

--- Comment #1 from Michel Dänzer <michel@daenzer.net> ---
Does radeon.uvd=0 on the kernel command line help?

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[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

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https://bugs.freedesktop.org/show_bug.cgi?id=104738

--- Comment #2 from Alex Deucher <alexdeucher@gmail.com> ---
Can you attach your full dmesg output?

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[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

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https://bugs.freedesktop.org/show_bug.cgi?id=104738

--- Comment #3 from hansmatros76@gmail.com ---
Created attachment 136941
  --> https://bugs.freedesktop.org/attachment.cgi?id=136941&action=edit
dmesg.log

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[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

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https://bugs.freedesktop.org/show_bug.cgi?id=104738

--- Comment #4 from hansmatros76@gmail.com ---
Created attachment 136942
  --> https://bugs.freedesktop.org/attachment.cgi?id=136942&action=edit
lspci.log

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[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=104738

--- Comment #5 from hansmatros76@gmail.com ---
Created attachment 136943
  --> https://bugs.freedesktop.org/attachment.cgi?id=136943&action=edit
grub.cfg

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[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

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https://bugs.freedesktop.org/show_bug.cgi?id=104738

--- Comment #6 from hansmatros76@gmail.com ---
Thanks for your replay

@Michel

Tested but the system crash and the screen becomes only black.

@Alex

Done

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[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

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https://bugs.freedesktop.org/show_bug.cgi?id=104738

--- Comment #7 from Michel Dänzer <michel@daenzer.net> ---
I suspect Alex meant the full dmesg output without nomodeset. :)

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[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

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https://bugs.freedesktop.org/show_bug.cgi?id=104738

--- Comment #8 from hansmatros76@gmail.com ---
Thanks but how can a do this?

Without this option in Grub i only see 1 second a few lines, then the monitor
switch into a black screen. nothing happens anymore. also am not able to ping
the host. i have to press the power button for a few seconds to force a
shutdown.

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[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

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https://bugs.freedesktop.org/show_bug.cgi?id=104738

--- Comment #9 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to hansmatros76 from comment #8)
> Thanks but how can a do this?

You attached a partial dmesg output in comment 0. Can you just remove the grep
so we get the full output?

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[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

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https://bugs.freedesktop.org/show_bug.cgi?id=104738

--- Comment #10 from Alex Deucher <alexdeucher@gmail.com> ---
Is this a regression?  Did it work previously?  If so, with what kernel?

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[Bug 104738] Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

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https://bugs.freedesktop.org/show_bug.cgi?id=104738

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

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

--- Comment #11 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/831.

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