[Bug 86413] Euro Truck Simulator 2: Severe stuttering with Kernel >=3.17

[Bug 86413] Euro Truck Simulator 2: Severe stuttering with Kernel >=3.17

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=86413

            Bug ID: 86413
           Summary: Euro Truck Simulator 2: Severe stuttering with Kernel
                    >=3.17
           Product: Mesa
           Version: 10.3
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: dragon.arises@gmail.com

Created attachment 109641
  --> https://bugs.freedesktop.org/attachment.cgi?id=109641&action=edit
Screenshot of HUD on a bad configuration

When running Euro Truck Simulator 2 with the combination of Mesa 10.3 and Linux
3.17 or newer, the game shows severe stuttering whenever a new object enters
the field of view (gets loaded to GPU RAM?) or the camera is rotated. The game
stops for a short period of time, up to several seconds, just to return to a
normal framerate afterwards. This stuttering is not present when combining
either Mesa 10.2 with Linux 3.17, or Mesa 10.3 with Linux 3.16. With Mesa 10.4
from git the stuttering is present on recent Linux versions, but much less
severe than with Mesa 10.3.

This issue might be related to bug:
https://bugs.freedesktop.org/show_bug.cgi?id=84570

Hardware: 
GPU: Radeon R9 270X (vendor overclocked)
Mainboard: Asus M5A88V-EVO (PCIe 2)

Software: 
xorg-server 3.16.99.901
xf86-video-ati-7.5.0
Mesa 10.3.3 or Mesa 10.2.9
Kernel 3.16.5, 3.17.2, 3.18-rc5
radeon-ucode-20140823

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[Bug 86413] Euro Truck Simulator 2: Severe stuttering with Kernel >=3.17

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https://bugs.freedesktop.org/show_bug.cgi?id=86413

--- Comment #1 from Andreas Grois <dragon.arises@gmail.com> ---
Created attachment 109642
  --> https://bugs.freedesktop.org/attachment.cgi?id=109642&action=edit
Screenshot of HUD on a good configuration (Mesa 10.3 + Linux 3.16)

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[Bug 86413] Euro Truck Simulator 2: Severe stuttering with Kernel >=3.17

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=86413

Andreas Grois <dragon.arises@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #109641|0                           |1
        is obsolete|                            |

--- Comment #2 from Andreas Grois <dragon.arises@gmail.com> ---
Created attachment 109643
  --> https://bugs.freedesktop.org/attachment.cgi?id=109643&action=edit
Screenshot of HUD on a bad configuration (Mesa 10.3.2 + Linux 3.17.2)

Resubmit due to wrong file type of previous upload

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[Bug 86413] Euro Truck Simulator 2: Severe stuttering with Kernel >=3.17

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=86413

--- Comment #3 from Andreas Grois <dragon.arises@gmail.com> ---
Created attachment 109644
  --> https://bugs.freedesktop.org/attachment.cgi?id=109644&action=edit
journalctl output while running ets2 on a bad configuration

Not that I think that this contains something useful, but attached is the
journalctl output that was recorded while the game was running on a bad
configuration.

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[Bug 86413] Euro Truck Simulator 2: Severe stuttering with Kernel >=3.17

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=86413

--- Comment #4 from Andreas Grois <dragon.arises@gmail.com> ---
Created attachment 109645
  --> https://bugs.freedesktop.org/attachment.cgi?id=109645&action=edit
dmesg of the bad configuration

Again, probably not very helpful, but here's the dmesg output of a bad
configuration.

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[Bug 86413] Euro Truck Simulator 2: Severe stuttering with Kernel >=3.17

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=86413

--- Comment #5 from Michel Dänzer <michel@daenzer.net> ---
Is it still bad with a kernel from Alex Deucher's drm-next-3.19 tree and Mesa
Git master? If so, can you attach a HUD screenshot corresponding to that?

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[Bug 86413] Euro Truck Simulator 2: Severe stuttering with Kernel >=3.17

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=86413

--- Comment #6 from Andreas Grois <dragon.arises@gmail.com> ---
Created attachment 109679
  --> https://bugs.freedesktop.org/attachment.cgi?id=109679&action=edit
Screenshot of HUD with drm-next-3.19 and Mesa from git

I've tested the latest git version of mesa combined with a drm-next-3.19
kernel, and indeed the issue seems to be fixed with this combination.
There are some very minor stutters still, but those are hardly noticable and
I'm not certain if they are related to the bug, or caused by something else
(disk activity,...).

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[Bug 86413] Euro Truck Simulator 2: Severe stuttering with Kernel >=3.17

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https://bugs.freedesktop.org/show_bug.cgi?id=86413

--- Comment #7 from Michel Dänzer <michel@daenzer.net> ---
Excellent, so can this report be resolved?

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[Bug 86413] Euro Truck Simulator 2: Severe stuttering with Kernel >=3.17

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https://bugs.freedesktop.org/show_bug.cgi?id=86413

Andreas Grois <dragon.arises@gmail.com> changed:

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

--- Comment #8 from Andreas Grois <dragon.arises@gmail.com> ---
In my opinion: Yes. I'll mark it as resolved/fixed.

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