[Bug 76957] New: Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

[Bug 76957] New: Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

          Priority: medium
            Bug ID: 76957
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Pixel artifacts and corruption plus system freeze and
                    instabilities with the free radeon driver (AMD HD
                    6570)
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: benjamin.menant+debian@gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Created attachment 96797
  --> https://bugs.freedesktop.org/attachment.cgi?id=96797&action=edit
Screenshot

Hello,

Each time I tried to use the free radeon drivers with my desktop computer, I
got those corrupted pixels when X starts. The issue effects increase as the
session time grows: more and more artifacts, more and more character
alterations (for instance, Thunderbird is displaying blocks instead of
characters), more and more instabilities (programs ends up by a segmentation
fault, and could eventually lead to a system freeze).

Otherwise, Gnome Shell starts without error. `glxgears` works and returns good
FPS. And the virtual consoles remain safe & clean; switching between them and X
has no effect.

The system was stable, without screen corruption when I used the AMD’s FGLRX
drivers.

How could I fix this issue? Any idea?
This ticket seems quite similar, should I try the proposed patch?
<https://bugs.freedesktop.org/show_bug.cgi?id=66932>

Chipset: AMD Radeon HD 6570 (Turks family) with 512MB dedicated RAM (AFAIR).
CPU: Intel DualCore E6300 with 4GB RAM.
Kernel: Linux 3.13-1-amd64.
And I use the defaut Xorg configuration (i.e. no configuration files).

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

--- Comment #1 from benjamin.menant+debian@gmail.com ---
Created attachment 96799
  --> https://bugs.freedesktop.org/attachment.cgi?id=96799&action=edit
Xorg log

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

--- Comment #2 from benjamin.menant+debian@gmail.com ---
Created attachment 96800
  --> https://bugs.freedesktop.org/attachment.cgi?id=96800&action=edit
glxinfo outputs

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

--- Comment #3 from benjamin.menant+debian@gmail.com ---
Created attachment 96801
  --> https://bugs.freedesktop.org/attachment.cgi?id=96801&action=edit
dmesg | grep radeon

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

--- Comment #4 from benjamin.menant+debian@gmail.com ---
Created attachment 96802
  --> https://bugs.freedesktop.org/attachment.cgi?id=96802&action=edit
lspci -vvnn

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

--- Comment #5 from benjamin.menant+debian@gmail.com ---
Created attachment 96803
  --> https://bugs.freedesktop.org/attachment.cgi?id=96803&action=edit
Syslog excerpt showing a segfault (I think it’s related)

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

--- Comment #6 from benjamin.menant+debian@gmail.com ---
Erratum: my graphic card has 256 MB of RAM.

Thank you,
Benjamin.

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #96797|text/plain                  |image/png
          mime type|                            |

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

--- Comment #7 from Alex Deucher <agd5f@yahoo.com> ---
Please attach your full dmesg output.  This is not related to bug 66932 as dpm
is not enabled on your asic by default.

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

benjamin.menant+debian@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #96801|0                           |1
        is obsolete|                            |

--- Comment #8 from benjamin.menant+debian@gmail.com ---
Created attachment 96809
  --> https://bugs.freedesktop.org/attachment.cgi?id=96809&action=edit
full dmesg

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

--- Comment #9 from benjamin.menant+debian@gmail.com ---
The dmesg output reveals these lines:

> [    5.343548] radeon 0000:05:00.0: VRAM: 1024M 0x0000000000000000 - 0x000000003FFFFFFF (1024M used)
> [    5.343550] radeon 0000:05:00.0: GTT: 1024M 0x0000000040000000 - 0x000000007FFFFFFF
> [    5.343552] [drm] Detected VRAM RAM=1024M, BAR=256M

1G VRAM seems to be a wrong value, since my graphic card holds only 256MB,
which seems to be seeing as BAR (what’s that stuff?). 

Anyway, could it be the cause of my problem?

Thank you,
Benjamin.

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

--- Comment #10 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #9)
> The dmesg output reveals these lines:
> 
> > [    5.343548] radeon 0000:05:00.0: VRAM: 1024M 0x0000000000000000 - 0x000000003FFFFFFF (1024M used)
> > [    5.343550] radeon 0000:05:00.0: GTT: 1024M 0x0000000040000000 - 0x000000007FFFFFFF
> > [    5.343552] [drm] Detected VRAM RAM=1024M, BAR=256M
> 
> 1G VRAM seems to be a wrong value, since my graphic card holds only 256MB,
> which seems to be seeing as BAR (what’s that stuff?). 
> 
> Anyway, could it be the cause of my problem?

Your board has 1 GB of vram.  The max BAR size is 256 MB regardless of how much
video ram is actually on the card.  The BAR is the CPU's aperture to vram.  The
CPU can only access teh first 256 MB of vram, but the GPU can access the entire
amount of vram.

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

--- Comment #11 from benjamin.menant+debian@gmail.com ---
Oups, sorry… Indeed, you are right Alex, this board has 1 GB
<http://www.club-3d.com/index.php/products/reader.en/product/radeon-hd-6570-coolstream-edition.html>

Thanks again for the clever explainations.

Thus, it was my last guess… Is there anything else I can do to find the origin
of this issue?

Sincerely,
Benjamin.

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

--- Comment #12 from Alex Deucher <agd5f@yahoo.com> ---
Does disabling tiling help?  Add:
Option "ColorTiling" "False"
Option "ColorTiling2D" "False"
to the device section of your xorg.conf

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

--- Comment #13 from benjamin.menant+debian@gmail.com ---
Unfortunately, deactivating ColorTiling and/or ColorTiling2D has no effect. I
also tried to set "SwapbuffersWait" to "False". 

Actually, as far as I remember, I tried to test most of the options available
(http://manpages.debian.org/cgi-bin/man.cgi?sektion=4&query=radeon) two years
ago, when I installed the board. Then, I switched to fglrx-driver.

I think it’s not related, but… often, X failed to restart from the virtual
console (weird pixelized screen or black screen, or nothing at all).
I had to reboot the computer to double check the result (and then, I did not
see any error in the Xorg log). 

Thanks again,
Benjamin.

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[Bug 76957] Pixel artifacts and corruption plus system freeze and instabilities with the free radeon driver (AMD HD 6570)

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https://bugs.freedesktop.org/show_bug.cgi?id=76957

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

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

--- 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/485.

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