[Bug 98630] New: Bad color and glitches on PPC64

[Bug 98630] New: Bad color and glitches on PPC64

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

            Bug ID: 98630
           Summary: Bad color and glitches on PPC64
           Product: Mesa
           Version: 13.0
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: jeffbai-ymACFijhrKM@public.gmane.org
        QA Contact: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org

Created attachment 127816
  --> https://bugs.freedesktop.org/attachment.cgi?id=127816&action=edit
WebGL coloring glitch.

Running some OpenGL programs on PowerMac G5 with NVIDIA GeForce 6600LE shows
problematic rendering:

- Wrong coloring, simply looks like inverts or blue/purple hue (WebGL demo,
Plasma Discover, Compiz, Linthesia, etc.)
- Text disappears (in the case of Plasma Discover).
- Flickering and glitchy flashing texture in general (in the case of
Linthesia).

This problem could be reproduced with Mesa 12.0.3 and 13.0.0 (which relates
with another issue I have just reported in this section
https://bugs.freedesktop.org/show_bug.cgi?id=98629).

Any how, some screenshots are provided below to demonstrate my issue.

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #1 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
Created attachment 127817
  --> https://bugs.freedesktop.org/attachment.cgi?id=127817&action=edit
Linthesia (title screen), showing bad coloring.

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[Bug 98630] Bad color and glitches on PPC64

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #2 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
Created attachment 127818
  --> https://bugs.freedesktop.org/attachment.cgi?id=127818&action=edit
Linthesia (playback view), showing wrong color and glitches.

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[Bug 98630] Bad color and glitches on PPC64

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #3 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
Created attachment 127819
  --> https://bugs.freedesktop.org/attachment.cgi?id=127819&action=edit
Plasma Discover, showing bad coloring and disappearing text.

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[Bug 98630] Bad color and glitches on PPC64

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #4 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Probably RGB vs BGR confusion. Can you create an apitrace of the problem? I'll
need to give this a whirl on my G5 (hm, if I can - I have a GeForce FX 5200 in
mine). I should try to track down a PCI nv4x that I can plug in.

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[Bug 98630] Bad color and glitches on PPC64

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #5 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
(In reply to Ilia Mirkin from comment #4)
> Probably RGB vs BGR confusion. Can you create an apitrace of the problem?
> I'll need to give this a whirl on my G5 ...

Is it an application related issue then?

The specific line where Linthesia maps its textures onto GL could be found
here:

https://github.com/linthesia/linthesia/blob/master/src/Tga.cpp#L217

I tried changing it from RGBA to BGRA today, which did change the color output,
but still in incorrect colors like yellow and brown (or maybe I have completely
butchered my RGB translation "knowledge").

> ... (hm, if I can - I have a GeForce FX 5200 in mine). I should try to track
> down a PCI nv4x that I can plug in.

Is it a Quad? I believe they are pretty cheap these days...

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[Bug 98630] Bad color and glitches on PPC64

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #6 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
Indeed, after removing nouveau_dri.so, the Plasma Discover at least renders the
full interface now.

However, it still shows bad coloring.

Screenshot attached.

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[Bug 98630] Bad color and glitches on PPC64

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #7 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
Created attachment 127821
  --> https://bugs.freedesktop.org/attachment.cgi?id=127821&action=edit
Plasma Discover after nouveau_dri.so was removed.

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[Bug 98630] Bad color and glitches on PPC64

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #8 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
(In reply to Mingcong Bai from comment #5)
> (In reply to Ilia Mirkin from comment #4)
> > Probably RGB vs BGR confusion. Can you create an apitrace of the problem?
> > I'll need to give this a whirl on my G5 ...
> 
> Is it an application related issue then?

Nope. Just the trickiness of dealing with a BE cpu and a
LE-but-kinda-BE-sometimes GPU. Unfortunately I don't have a clear model in my
head of precisely what all the "BE" flag flips on these GPUs, which makes
things much trickier.

> > ... (hm, if I can - I have a GeForce FX 5200 in mine). I should try to track
> > down a PCI nv4x that I can plug in.
> 
> Is it a Quad? I believe they are pretty cheap these days...

It's a PowerMac7,2 IIRC. It has an AGP slot (with the FX 5200) and some number
of PCI slots. I glanced at nv4x boards, but they're above my tolerance of
things I buy for the purpose of developing free drivers in my own time.

(In reply to Mingcong Bai from comment #6)
> Indeed, after removing nouveau_dri.so, the Plasma Discover at least renders
> the full interface now.
> 
> However, it still shows bad coloring.

Oh interesting. That means the confusion is in the DDX. (Or disagreement
between mesa and the DDX.) Please confirm that you're running a semi-recent
version of xf86-video-nouveau (e.g. 1.0.12), and actually verify that it says
NOUVEAU(0) in your xorg log.

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #9 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
> Oh interesting. That means the confusion is in the DDX. (Or disagreement
> between mesa and the DDX.) Please confirm that you're running a semi-recent
> version of xf86-video-nouveau (e.g. 1.0.12), and actually verify that it
> says NOUVEAU(0) in your xorg log.

Definitely...

[ 18082.072] (II) AIGLX: Suspending AIGLX clients for VT switch
[ 18082.072] (II) NOUVEAU(0): NVLeaveVT is called.
[ 18609.555] (II) AIGLX: Resuming AIGLX clients after VT switch
[ 18609.555] (II) NOUVEAU(0): NVEnterVT is called.
[ 18609.588] (II) NOUVEAU(0): EDID vendor "DEL", prod id 41112
[ 18609.588] (II) NOUVEAU(0): Using hsync ranges from config file
[ 18609.588] (II) NOUVEAU(0): Using vrefresh ranges from config file
[ 18609.588] (II) NOUVEAU(0): Printing DDC gathered Modelines:

And yes, it should be the newest version available:

jeffbai@G5-AOSC [ ~ ] $ dpkg -s xf86-video-nouveau 
Package: xf86-video-nouveau
Status: install ok installed
Section: x11
Installed-Size: 364
Maintainer: Everette Rong <l.e.r-sGOZH3hwPm2sTnJN9+BGXg@public.gmane.org>
Architecture: ppc64
Version: 1.0.12
Depends: xorg-server (>= 1.18.4), libdrm (>= 2.4.70), systemd (>= 1:231-2)
Description: XF86 driver for NVIDIA graphics cards

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #10 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
And which driver ends up being active in this mode (where nouveau_dri is gone)?
(glxinfo | grep renderer should have the relevant info)

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #11 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
> And which driver ends up being active in this mode (where nouveau_dri is gone)? 
> (glxinfo | grep renderer should have the relevant info)

LLVMpipe.

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #12 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Could you try booting with nouveau.config=NvPCIE=0 and seeing if this has any
effect on any of your issues?

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #13 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
(In reply to Ilia Mirkin from comment #12)
> Could you try booting with nouveau.config=NvPCIE=0 and seeing if this has
> any effect on any of your issues?

Nope, the situation is identical. I have attached some screenshots for you.

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #14 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
Created attachment 127825
  --> https://bugs.freedesktop.org/attachment.cgi?id=127825&action=edit
KDE, wrong color 1

Note that systemsettings shows the right color in this case.

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #15 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
Created attachment 127826
  --> https://bugs.freedesktop.org/attachment.cgi?id=127826&action=edit
KDE wrong color 2

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #16 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
(In reply to Mingcong Bai from comment #13)
> (In reply to Ilia Mirkin from comment #12)
> > Could you try booting with nouveau.config=NvPCIE=0 and seeing if this has
> > any effect on any of your issues?
> 
> Nope, the situation is identical. I have attached some screenshots for you.

Also I have tried to use "fbdev" driver for Xorg, which results in the same bad
color display.

Maybe this issue is not here at nouveau? Either down in Mesa or up at Qt?

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #17 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
Suspecting that this could still be an application-based issue, I have filed
some issues to GNOME and KDE developers, as their desktop environment have the
same coloring issue while XFCE and MATE worked just fine:

- https://bugs.kde.org/show_bug.cgi?id=372202
- https://bugzilla.gnome.org/show_bug.cgi?id=774085

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #18 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
(In reply to Mingcong Bai from comment #17)
> Suspecting that this could still be an application-based issue, I have filed
> some issues to GNOME and KDE developers, as their desktop environment have
> the same coloring issue while XFCE and MATE worked just fine:
> 
> - https://bugs.kde.org/show_bug.cgi?id=372202
> - https://bugzilla.gnome.org/show_bug.cgi?id=774085

Could you confirm that nouveau.nomodeset=1 (+ fbdev) produces these bad effects
as well? Should be able to use offb assuming that OF knows how to deal with
your GPU.

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #19 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
(In reply to Ilia Mirkin from comment #18)
> (In reply to Mingcong Bai from comment #17)
> > Suspecting that this could still be an application-based issue, I have filed
> > some issues to GNOME and KDE developers, as their desktop environment have
> > the same coloring issue while XFCE and MATE worked just fine:
> > 
> > - https://bugs.kde.org/show_bug.cgi?id=372202
> > - https://bugzilla.gnome.org/show_bug.cgi?id=774085
> 
> Could you confirm that nouveau.nomodeset=1 (+ fbdev) produces these bad
> effects as well? Should be able to use offb assuming that OF knows how to
> deal with your GPU.

Er, sorry - that should have been "nomodeset" bare in the kernel cmdline. Or
"nouveau.modeset=0". I think.

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

--- Comment #20 from Mingcong Bai <jeffbai-ymACFijhrKM@public.gmane.org> ---
Created attachment 127847
  --> https://bugs.freedesktop.org/attachment.cgi?id=127847&action=edit
Fbdev and nomodeset

And... This happened (my eyes).

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[Bug 98630] Bad color and glitches on PPC64

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https://bugs.freedesktop.org/show_bug.cgi?id=98630

GitLab Migration User <gitlab-migration-wf5LKTHn7b+es5Oj371l6A@public.gmane.org> changed:

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

--- Comment #21 from GitLab Migration User <gitlab-migration-wf5LKTHn7b+es5Oj371l6A@public.gmane.org> ---
-- 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/mesa/mesa/issues/1116.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.

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