[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #1 from ka.nick@mail.ru ---
Created attachment 88936
  --> https://bugs.freedesktop.org/attachment.cgi?id=88936&action=edit
dmesg output

X11 doesn't work on my dual-graphics AMD laptop with kernels 3.10.X - 3.12.X,
on 3.9.X and earlier kernels does.
Upon startup lxdm shows a garbage instead of normal picture (but the colors are
from the picture), X restarts every few seconds, but kernel itself works fine -
I can ssh into the comp or restart using the magic key.
Have been trying different combinations: EXA/Glamor, various xorg options with
basically the same result: in some cases I can see the normal working mouse
over the garbage, in some cases I get "GPU stall" message in dmesg, or EQ
overflow in Xorg.0.log...
R600_DEBUG=sdsafemath - improves a picture a bit;
ColorTiling off - makes things even better - in this case about 70% of the
screen are drawn correctly, but at wrong position on the screen;
NoAccel on - works as with 3.9.X kernel - windows and lxdm screen - ok,
background with errors.

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #2 from ka.nick@mail.ru ---
Created attachment 88937
  --> https://bugs.freedesktop.org/attachment.cgi?id=88937&action=edit
Xorg.0.log

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #3 from ka.nick@mail.ru ---
Created attachment 88939
  --> https://bugs.freedesktop.org/attachment.cgi?id=88939&action=edit
lspci output

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #4 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #1)
> X11 doesn't work on my dual-graphics AMD laptop with kernels 3.10.X -
> 3.12.X, on 3.9.X and earlier kernels does.

Can you bisect with git?

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #5 from ka.nick@mail.ru ---
Yes, within few  days...

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #6 from ka.nick@mail.ru ---
Created attachment 89177
  --> https://bugs.freedesktop.org/attachment.cgi?id=89177&action=edit
bisect log with some comments added

Alex,
here is a bisecting results. 
Please note that few commits away from the first bad commit it became
half-broken - background isn't corrupted but lxdm doesn't start, and x keeps
restarting.

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #7 from ka.nick@mail.ru ---
Alex?
Did I provide all necessary information, don't I?

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #8 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #7)
> Alex?
> Did I provide all necessary information, don't I?

Yes.  thank you.  I haven't had a chance to look into this in depth yet.

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #9 from ka.nick@mail.ru ---
Mr. Deucher?
Is there any chance for a Christmas gift?

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #10 from Alex Deucher <agd5f@yahoo.com> ---
This might be a duplicate of bug 60389.  Does attachment 90957 help?

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #11 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 91088
  --> https://bugs.freedesktop.org/attachment.cgi?id=91088&action=edit
possible fix

You might also try this patch in combination with the previous one if it
doesn't work.

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #12 from ka.nick@mail.ru ---
Unfortunately neither 1st one nor the combination of the two helped.
It just reshaped the garbage, and X still keeps restarting.
But now it looks like the screen is divided in small tiles that are maybe
correct by themselves but placed at wrong positions and repeated now and then.

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

--- Comment #13 from ka.nick@mail.ru ---
UPD: Tried to set ColorTiling and ColorTiling2D to off.
In this case about 60% of the screen is rendered correctly but is placed @
wrong position on the screen. Mouse works but X restarts just the same.

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[Bug 71431] radeon graphics stopped working since kernel 3.10 on AMD a4-3300

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https://bugs.freedesktop.org/show_bug.cgi?id=71431

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

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

--- Comment #14 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/401.

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