[Bug 87796] radeonsi 120Hz graphic glitches

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https://bugs.freedesktop.org/show_bug.cgi?id=87796

Martin Peres  changed:

   What|Removed |Added

 Resolution|--- |MOVED
 Status|NEW |RESOLVED

--- Comment #32 from Martin Peres  ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
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You can subscribe and participate further through the new bug through this link
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[Bug 87796] radeonsi 120Hz graphic glitches

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https://bugs.freedesktop.org/show_bug.cgi?id=87796

--- Comment #31 from Andreas Gihr  ---
The power consumption rises about 40 watts at 120hz. This is the case in KDE
and in Openbox without compositing. In Windows there's about 1 watt difference.

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[Bug 87796] radeonsi 120Hz graphic glitches

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--- Comment #30 from Clésio Luiz  ---
After reading the Andreas Gihr post about greater power consumption, I did a
little test. Using Kubuntu KDE 4 I put the display at 60Hz and watched the GPU
temperature drop 3°C. Put it back at 120Hz and the temp go up the same 3°C.

But to me, this is expected. The GPU is working more to double the FPS of the
KDE compositing. So is natural it getting hotter.

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[Bug 87796] radeonsi 120Hz graphic glitches

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--- Comment #29 from Clésio Luiz  ---
The bug seems to be gone for me. Using Kernel 4.0 RC7 and latest Paulo Dias
Mesa git PPA.

Temperature of the GPU appears to be normal at idle.

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--- Comment #28 from Andreas Gihr  ---
But now there is much higher power consumption in idle.

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--- Comment #27 from Andreas Gihr  ---
Yes it helps.
Thanks.

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[Bug 87796] radeonsi 120Hz graphic glitches

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Alex Deucher  changed:

   What|Removed |Added

 Attachment #114443|0   |1
is obsolete||

--- Comment #26 from Alex Deucher  ---
Created attachment 114452
  --> https://bugs.freedesktop.org/attachment.cgi?id=114452=edit
possible fix

Does this patch against latest git help?

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[Bug 87796] radeonsi 120Hz graphic glitches

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--- Comment #25 from Andreas Gihr  ---
It didn't help.

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[Bug 87796] radeonsi 120Hz graphic glitches

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--- Comment #24 from Alex Deucher  ---
Created attachment 114443
  --> https://bugs.freedesktop.org/attachment.cgi?id=114443=edit
possible fix

Does this patch on top of latest git help?

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--- Comment #23 from Andreas Gihr  ---
I'm using the newest kernel from git. 
It said: Reversed (or previously applied) patch detected!

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--- Comment #22 from Alex Deucher  ---
(In reply to Andreas Gihr from comment #21)
> I'm still having this issue.

Does it still happen with the patches applied?

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--- Comment #21 from Andreas Gihr  ---
I'm still having this issue.
Here's some dmesg output:

[  363.951100] -- 2560x1440 --
[  363.951101] radeon_crtc->hw_mode.crtc_htotal: 2640
[  363.951101] radeon_crtc->hw_mode.clock: 482640
[  363.951102] radeon_crtc->hw_mode.crtc_vblank_end: 1525
[  363.951102] radeon_crtc->hw_mode.crtc_vdisplay: 1440
[  363.951103] radeon_crtc->v_border: 0
[  363.951103] vblank_time_us: 425
[  363.951104] vblank_lines: 85
[  363.951104] line_time_us: 5
[  363.951105] vblank_time: 425, switch_limit: 450

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[Bug 87796] radeonsi 120Hz graphic glitches

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--- Comment #20 from Alex Deucher  ---
Created attachment 113618
  --> https://bugs.freedesktop.org/attachment.cgi?id=113618=edit
fix 2/2

Please apply both patches.

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--- Comment #19 from Alex Deucher  ---
Created attachment 113617
  --> https://bugs.freedesktop.org/attachment.cgi?id=113617=edit
fix 1/2

The attaches patches should fix the issue, but I would still like to get the
output of the debugging patch in comment 15 so that I can fine tune things if
possible.

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Alex Deucher  changed:

   What|Removed |Added

 CC||andre35822 at yahoo.com

--- Comment #18 from Alex Deucher  ---
*** Bug 89198 has been marked as a duplicate of this bug. ***

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[Bug 87796] radeonsi 120Hz graphic glitches

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--- Comment #17 from Alex Deucher  ---
(In reply to Clésio Luiz from comment #16)
> I didn't compiled the driver myself, got it from a repository. I'm afraid
> that applying a patch and compile the driver is out of my knowledge... But
> I'm more than happy to follow instructions.

If you can download the source to your kernel, copy the patch to the root of
the kernel tree then do the following:

patch -p1 -i dpm_vblank_dump.diff
make -j5
sudo make modules_install
sudo make install

Then reboot and select the new kernel from the grub menu.

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[Bug 87796] radeonsi 120Hz graphic glitches

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--- Comment #16 from Clésio Luiz  ---
I didn't compiled the driver myself, got it from a repository. I'm afraid that
applying a patch and compile the driver is out of my knowledge... But I'm more
than happy to follow instructions.

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[Bug 87796] radeonsi 120Hz graphic glitches

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--- Comment #15 from Alex Deucher  ---
Created attachment 112228
  --> https://bugs.freedesktop.org/attachment.cgi?id=112228=edit
add some debugging output

Based on the timing for the 1920x1080 at 120 timing from your xorg log, it looks
like it should be just under the switch limit.  Can you apply the attached
patch and switch to the problematic mode and then attach your dmesg output so I
can see what's happening?

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Alex Deucher  changed:

   What|Removed |Added

  Component|Drivers/Gallium/radeonsi|DRM/Radeon
Version|git |unspecified
Product|Mesa|DRI

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--- Comment #14 from Clésio Luiz  ---
I tested now with 2 displays, the Benq monitor (DVI cable) at 120Hz and a Lg TV
(HDMI cable) and the glitches disappear.

When I disable the TV (from System Settings) and disconnect the cable, the
glitches are still gone. Only when I restart the system the glitches come back.

I should mention that any refresh rate above 60Hz triggers the problem, not
only 120Hz.

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--- Comment #13 from Andreas Hartmetz  ---
I have a somewhat similar issue with radeonsi, latest everything (xorg, llvm,
mesa) except Linux kernel which is 3.17.8, and Cape Verde PRO (aka Radeon HD
7750) hardware. The screen sometimes turns completely black for a frame. It
happened a few times per hour. In the past this could be reliably avoided by
pinning the power setting to min or max, but DPM changes prevented that fix
from working.
Now that I know this:
echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level
(looks similar to the one that used to work a few kernels earlier?) I can avoid
the problem again, but of course at the cost of power consumption. The
underlying issue might be the same timing problem. I can file a new bug if you
think it is a different issue.

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--- Comment #12 from Sandro  ---
glitches disapper from me too with 'high' parameter.

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--- Comment #11 from Clésio Luiz  ---
(In reply to Alex Deucher from comment #10)
> It looks like maybe the dpm memory reclocking occasionally misses the
> vblank.  Do you still get the glitches if you connect a secondary display or
> disable dynamic clocking?  To disable able dynamic clocking (as root):
> echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level
> to re-enable it (as root):
> echo auto > /sys/class/drm/card0/device/power_dpm_force_performance_level

The High value makes the glitches go away. As soon as I set the Auto value, the
glitches reappear.

I don't have access to a second display to test right now, only tomorrow.

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--- Comment #10 from Alex Deucher  ---
It looks like maybe the dpm memory reclocking occasionally misses the vblank. 
Do you still get the glitches if you connect a secondary display or disable
dynamic clocking?  To disable able dynamic clocking (as root):
echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level
to re-enable it (as root):
echo auto > /sys/class/drm/card0/device/power_dpm_force_performance_level

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--- Comment #9 from Clésio Luiz  ---
(In reply to Clésio Luiz from comment #8)

> I cant get the video with tools like Kazam or SimpleScreenRecorder. I have
> to grab it with a external camera.

I mean, the glitches don't appear in the video files created with the above
tools, for some reason. The only way to show you guys the problem is to record
it with a external camera.

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--- Comment #8 from Clésio Luiz  ---
(In reply to Michel Dänzer from comment #1)
> Please attach /var/log/Xorg.0.log and the output of dmesg.
> 
> Can you upload the video somewhere?
> 
> If not, please provide more details about the glitches, e.g.: Are they
> always visible, or only intermittently? If the latter, how often? Does the
> vertical location of the glitches change or is it always the same? ...

I set the 120Hz and restarted. Then I opened Konsole and got the results and
put then as attachments.

Finally got a video and put it in Youtube:

https://www.youtube.com/watch?v=W7a9nrwPPeY

I cant get the video with tools like Kazam or SimpleScreenRecorder. I have to
grab it with a external camera.

The glitches are intermittently. The image cam be fine for a fell seconds then
the glitches show themselves.

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--- Comment #7 from Clésio Luiz  ---
Created attachment 112181
  --> https://bugs.freedesktop.org/attachment.cgi?id=112181=edit
/var/log/Xorg.0.log

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--- Comment #6 from Clésio Luiz  ---
Created attachment 112180
  --> https://bugs.freedesktop.org/attachment.cgi?id=112180=edit
dmesg

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--- Comment #5 from Alex Deucher  ---
Yes, it seems to work now.

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--- Comment #4 from Sandro  ---
(In reply to Alex Deucher from comment #3)
> (In reply to Sandro from comment #2)
> > Same here with my gigabyte r9 290.
> > The glitches pop up randomly.
> > Here is the video http://youtu.be/ilH6em3eIrY
> 
> The link says the video is private.

try now

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--- Comment #3 from Alex Deucher  ---
(In reply to Sandro from comment #2)
> Same here with my gigabyte r9 290.
> The glitches pop up randomly.
> Here is the video http://youtu.be/ilH6em3eIrY

The link says the video is private.

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--- Comment #2 from Sandro  ---
Same here with my gigabyte r9 290.
The glitches pop up randomly.
Here is the video http://youtu.be/ilH6em3eIrY

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--- Comment #1 from Michel Dänzer  ---
Please attach /var/log/Xorg.0.log and the output of dmesg.

Can you upload the video somewhere?

If not, please provide more details about the glitches, e.g.: Are they always
visible, or only intermittently? If the latter, how often? Does the vertical
location of the glitches change or is it always the same? ...

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Vladimir Ysikov  changed:

   What|Removed |Added

 Attachment #111427|text/plain  |image/png
  mime type||

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Bug ID: 87796
   Summary: radeonsi 120Hz graphic glitches
   Product: Mesa
   Version: git
  Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
  Severity: normal
  Priority: medium
 Component: Drivers/Gallium/radeonsi
  Assignee: dri-devel at lists.freedesktop.org
  Reporter: magolobel at yahoo.com.br

Created attachment 111427
  --> https://bugs.freedesktop.org/attachment.cgi?id=111427=edit
video screenshot of the glitch

When I enable 120Hz refresh rate in the Radeon R9 290 card, with my Benq
XL2420T monitor, I get horizontal glitches in the image. That happens in KDE,
Unity, XFCE (all with or without compositing), and games. Without compositing,
the windows decorations in KDE show artifacts in 60 and 120Hz.

60Hz refresh rate works okay. Fglx proprietary driver works okay with 120Hz. I
also have a Radeon HD 6970 with the radeon OSS driver and it also works okay in
120Hz in my system. 

Currently I am using Kubuntu 14.10, kernel 3.19RC1 and Mesa git from this PPA:
https://launchpad.net/~paulo-miguel-dias/+archive/ubuntu/mesa

The card is a Sapphire Radeon R9 290 4GB Tri-X.

This bug is happening since I got this card, in September.

I cant get a direct screenshot nor taking photos (with a smartphone) of the
glitch happening, so I take a video of it with a phone and then take a
screenshot.

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