[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

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https://bugs.freedesktop.org/show_bug.cgi?id=88877

            Bug ID: 88877
           Summary: Invisible Chrome windows on radeonsi with KWin
                    compositing
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: darkbasic@linuxsystems.it

Since a couple of weeks every time I create a new Chromium window it is
completely invisible until I minimize and restore it. What I see instead of the
new Chrome window is the underlying one.
Without compositing it works flawlessly (my desktop environment is KDE 4.14.3
so the compositor is KWin).

Graphic stack is from git (including xorg, llvm, mesa and drm-next-3.20).

I am sure the regression isn't in the kernel, maybe it is due to Chromium 40
exposing it (I don't remember having it with v39) but I'm not sure.

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[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

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https://bugs.freedesktop.org/show_bug.cgi?id=88877

--- Comment #1 from Alex Deucher <alexdeucher@gmail.com> ---
Please attach your xorg log and dmesg output.  Can you identify what component
update caused the regression?

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[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

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https://bugs.freedesktop.org/show_bug.cgi?id=88877

--- Comment #2 from darkbasic <darkbasic@linuxsystems.it> ---
Created attachment 112978
  --> https://bugs.freedesktop.org/attachment.cgi?id=112978&action=edit
Xorg.0.log

Hi Alex,
I attached them. I'm trying to find what caused the regression, but that's not
an easy task considering I compile a new snapshot of every single component of
the graphic stack daily. I will let you know what I discover.

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[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

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https://bugs.freedesktop.org/show_bug.cgi?id=88877

--- Comment #3 from darkbasic <darkbasic@linuxsystems.it> ---
Created attachment 112979
  --> https://bugs.freedesktop.org/attachment.cgi?id=112979&action=edit
dmesg

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[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

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https://bugs.freedesktop.org/show_bug.cgi?id=88877

--- Comment #4 from darkbasic <darkbasic@linuxsystems.it> ---
Oh this is important: I forgot to say I'm using DRI3 with this xf86-video-ati
branch:
https://github.com/iXit/xf86-video-ati/commits/master

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[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

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https://bugs.freedesktop.org/show_bug.cgi?id=88877

--- Comment #5 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to darkbasic from comment #4)
> Oh this is important: I forgot to say I'm using DRI3 with this
> xf86-video-ati branch:
> https://github.com/iXit/xf86-video-ati/commits/master

Does removing that patch fix the issue?

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[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

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https://bugs.freedesktop.org/show_bug.cgi?id=88877

--- Comment #6 from darkbasic <darkbasic@linuxsystems.it> ---
I confirm the culprit is DRI3, I completely forgot about it. Sorry :(

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[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

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https://bugs.freedesktop.org/show_bug.cgi?id=88877

--- Comment #7 from darkbasic <darkbasic@linuxsystems.it> ---
Can you reproduce it with DRI3?

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[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

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https://bugs.freedesktop.org/show_bug.cgi?id=88877

--- Comment #8 from Michel Dänzer <michel@daenzer.net> ---
(In reply to darkbasic from comment #4)
> Oh this is important: I forgot to say I'm using DRI3 with this
> xf86-video-ati branch:
> https://github.com/iXit/xf86-video-ati/commits/master

I recommend against using that, because it doesn't have proper Present
extension support.

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[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

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https://bugs.freedesktop.org/show_bug.cgi?id=88877

--- Comment #9 from darkbasic <darkbasic@linuxsystems.it> ---
Unfortunately the nine state tracker needs DRI3 support, so I have to use it.
Any ETA for proper present support in radeon?

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[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

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https://bugs.freedesktop.org/show_bug.cgi?id=88877

--- Comment #10 from Michel Dänzer <michel@daenzer.net> ---
(In reply to darkbasic from comment #9)
> Unfortunately the nine state tracker needs DRI3 support, so I have to use it.
> Any ETA for proper present support in radeon?

No, but in the meantime the modesetting driver from current xserver has proper
DRI3 and Present support.

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[Bug 88877] Invisible Chrome windows on radeonsi with KWin compositing

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https://bugs.freedesktop.org/show_bug.cgi?id=88877

darkbasic <darkbasic@linuxsystems.it> changed:

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

--- Comment #11 from darkbasic <darkbasic@linuxsystems.it> ---
I switched to the modesetting driver (xorg-server git) + page flipping patches:
http://cgit.freedesktop.org/~kwg/xserver/commit/?h=pageflip&id=f60ed01813e8c479625c28ab530a0fa3d76c1196
http://cgit.freedesktop.org/~kwg/xserver/commit/?h=pageflip&id=885deeffc90548cc4a98def507522d422cc90a09
http://cgit.freedesktop.org/~kwg/xserver/commit/?h=pageflip&id=77c0d59d01fece39910ae593f7807e74ffe24583
http://cgit.freedesktop.org/~kwg/xserver/commit/?h=pageflip&id=25d5d2b1103be58bb2d549bf0e62d505377060f4
http://cgit.freedesktop.org/~kwg/xserver/commit/?h=pageflip&id=f3c10666df33650da1e772994b087825774671ee

~ # cat /usr/share/X11/xorg.conf.d/99-modesetting.conf 
Section "Device"
        Identifier "radeon"
        Driver "modesetting"
EndSection

~ $ ./dri3info 
Connected to DRI3 on display ':0', using fd 4: matches /dev/dri/card1

Also in the meantime I moved to Plasma 5 git so I can't reproduce the original
xf86-video-ati bug anymore, that's why I'm closing this issue.

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