Nouveau - Sep 2009 - [Bug 23792] New: Getting inverted colors after having launched Virtualbox with Nouveau driver

http://bugs.freedesktop.org/show_bug.cgi?id=23792

           Summary: Getting inverted colors after having launched Virtualbox
                    with Nouveau driver
           Product: xorg
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: thomas.pegeot at gmail.com
         QAContact: xorg-team at lists.x.org


Hello,

Lauching Virtualbox on my computer makes the screen get inverted/negative
colors when i open new qt/kde applications. If i focus on an older windows
(launched before Virtualbox), the screen goes back to normal colors, and vice
versa. When the colors are inverted, my screen looks like this :
http://bbs.archlinux.org/viewtopic.php?id=77040 (it's not my thread). 
Restarting X solves the problem. ;)

The kernel (master branch), mesa, libdrm, xf86-video-nouveau were compiled this
morming from the git repos. ;)

I got this problem for the first time about 1 month ago but I didn't really
know whether this problem was related to nouveau or not...

I use KDE with compositing (via Xrender) and toggling off compositing
doesn't
solve the problem. 

This morning i tried the NV driver, and this problem didn't occur. 

My graphic card : 05:00.0 VGA compatible controller: nVidia Corporation NV41.1
[GeForce 6800] (rev a2)

Feel free to ask if you have any further questions. 

Regards

Thank you in advance!


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--- Comment #1 from Thomas PEGEOT <thomas.pegeot at gmail.com>  2009-09-12
03:36:16 PST ---
How can i find out where this problem comes from ? How can i debug this bad
behaviour ? 

Thank you.


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--- Comment #2 from Maarten Maathuis <madman2003 at gmail.com>  2009-09-12
04:03:11 PST ---
At the very least give some kernel and xorg logs.


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--- Comment #3 from Thomas PEGEOT <thomas.pegeot at gmail.com>  2009-09-18
04:59:49 PST ---
Created an attachment (id=29663)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=29663)
Dmesg before launching Virtualbox


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--- Comment #4 from Thomas PEGEOT <thomas.pegeot at gmail.com>  2009-09-18
05:00:36 PST ---
Created an attachment (id=29664)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=29664)
Kernel log before launching Virtualbox


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--- Comment #5 from Thomas PEGEOT <thomas.pegeot at gmail.com>  2009-09-18
05:01:38 PST ---
Created an attachment (id=29665)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=29665)
Xorg log before launching Virtualbox


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--- Comment #6 from Thomas PEGEOT <thomas.pegeot at gmail.com>  2009-09-18
05:04:53 PST ---
Here are the different logs you ask for. ;)

After having launched Virtualbox, the following lines are added to the kern.log
: 
gentoo thomas # diff kern.log /var/log/kern.log
8936a8937,8940
> Sep 18 13:57:16 gentoo kernel: [  349.772788] warning: `VirtualBox'
uses 32-bit capabilities (legacy support in use)
> Sep 18 13:57:18 gentoo kernel: [  351.947281] nouveau 0000:05:00.0:
Allocating FIFO number 2
> Sep 18 13:57:18 gentoo kernel: [  351.948771] nouveau 0000:05:00.0:
nouveau_channel_alloc: initialised FIFO 2
> Sep 18 13:57:18 gentoo kernel: [  352.103528] nouveau 0000:05:00.0:
nouveau_channel_free: freeing fifo 2
Thank you in advance! ;)

Regards.


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--- Comment #7 from Thomas PEGEOT <thomas.pegeot at gmail.com>  2009-09-26
04:55:34 PST ---
Disabling opengl in Virtualbox solved the problem. ;) I even didn't know
that
it was enabled ... :( 


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--- Comment #8 from Pekka Paalanen <pq at iki.fi>  2009-09-26 07:04:12 PST
---
(In reply to comment #7)
> Disabling opengl in Virtualbox solved the problem. ;) I even didn't
know that
> it was enabled ... :( 
Were you using the Nouveau Gallium/DRI driver or swrast?

The description sounds like VirtualBox sets up a window palette, a feature from
the dark ages. X desktop was 256-color so it used a palette. If an application
set up its own palette, all other windows would draw with "bad" colors
while
the application had focus. IIRC.
Is you X in 256-color paletted mode? I don't know if we even support that,
so
all this is unlikely.


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--- Comment #9 from Thomas PEGEOT <thomas.pegeot at gmail.com>  2009-09-27
04:47:15 PST ---
> Were you using the Nouveau Gallium/DRI driver or swrast?
Actually, I've been using the Mesa ebuild from the X11 overlay for a while
with
gallium support enabled, as well as Nouveau (VIDEO_CARDS="nouveau)". 
What is swrast? 
> Is you X in 256-color paletted mode? I don't know if we even support
that, so
all this is unlikely.
According to xdpyinfo, the default number of colormap cells is 256. Is that
what you want to know ? If i'm wrong, just tell me where i can find this and
i'll tell you. ;)


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Pekka Paalanen <pq at iki.fi> changed:

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




--- Comment #10 from Pekka Paalanen <pq at iki.fi>  2009-09-27 05:13:38
PST ---
(In reply to comment #9)
> Actually, I've been using the Mesa ebuild from the X11 overlay for a
while with
> gallium support enabled, as well as Nouveau
(VIDEO_CARDS="nouveau)".
Okay, that is enough to make this report invalid. We do not take Gallium3D bugs
yet.
> What is swrast? 
The Mesa software rasterizer, the only supported OpenGL renderer for Nouveau at
this time. glxinfo would say:
OpenGL vendor string: Mesa Project
OpenGL renderer string: Software Rasterizer
> According to xdpyinfo, the default number of colormap cells is 256. Is that
> what you want to know ? If i'm wrong, just tell me where i can find
this and
> i'll tell you. ;)
"Depth of root window". I bet you would know if you were in 256-color
mode.
Ever looked at 256-color gifs? Not to mention that anything OpenGL would
probably refuse to work.


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--- Comment #11 from Thomas PEGEOT <thomas.pegeot at gmail.com> 
2009-09-27 12:34:19 PST ---
> Okay, that is enough to make this report invalid. We do not take Gallium3D
bugs
> yet
I think I had the same problem even when gallium was disabled ... but i'm
not
sure about it. If i've time, i'll try it again. ;)
Anyway, i don't need OpenGL support in Virtualbox, disabling it is fine for
me.
Even disabling Gallium is ok. 
> "Depth of root window". I bet you would know if you were in
256-color mode.
> Ever looked at 256-color gifs? Not to mention that anything OpenGL would
> probably refuse to work.
Because of my English, i definitely missed the point about the 256-color mode. 
You're right, i would have known if i were using this crappy mode. :p

depth of root window:    24 planes


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