lxpanel doesn't support rgba

[Julien Lavergne]

Binary package hint: lxpanel

lxpanel is unusable, it's take focus all the time, hide and unhide, can't click on it ...

To reproduce, just start lxpanel.

Rebuilding gtk+2 without csd patch restore the normal behavior.

terminal output :

(lxpanel:1269): Gtk-CRITICAL **: gtk_widget_hide: assertion `GTK_IS_WIDGET (widget)' failed

(lxpanel:1269): Gtk-CRITICAL **: gtk_container_remove: assertion `GTK_IS_WIDGET (widget)' failed

(lxpanel:1269): Gtk-CRITICAL **: gtk_widget_hide: assertion `GTK_IS_WIDGET (widget)' failed

(lxpanel:1269): Gtk-CRITICAL **: gtk_container_remove: assertion `GTK_IS_WIDGET (widget)' failed

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: lxpanel 0.5.5-4ubuntu1
ProcVersionSignature: Ubuntu 2.6.34-5.13-generic 2.6.34
Uname: Linux 2.6.34-5-generic i686
Architecture: i386
Date: Fri Jun 4 17:58:09 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha i386 (20100601)
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: lxpanel

[Julien Lavergne (gilir)]

Adding XLIB_SKIP_ARGB_VISUALS=1 "fix" the problem, so it seems that lxpanel doesn't support rgba.

[Sebastien Bacher (seb128)]

the gtk rgba change has been turned off until alpha2 but will be enable again later in the cycle so this bug should still be worked

[Pietro Pilolli (alpha-paranoici)]

Hi I have seen that in maverick this line in the /usr/bin/startlubuntu

#Workaround to disable rgba, because lxpanel in Lubuntu doesn't support it
#(see bug #589763)

export XLIB_SKIP_ARGB_VISUALS=1

This create a lot of problem in all the applcation that use the alpha channel,
such as my program called Ardesia.
In the Ardesia issue http://code.google.com/p/ardesia/issues/detail?id=20;
you can found that running also a little demo
that the alpha channel is disabled http://plan99.net/~mike/files/alphademo.c

The counter example is that removing the XLIB_SKIP_ARGB_VISUALS line Ardesia
works correctly

I want underlie that there are a lot of applications that use the RGBA colormap and
that could be possible set an rgb colormap in the lxpanel and could be the same effect
that this workouraoud without compromise the work of the other applications.

I hope that you can purge this "workaround".

[Pietro Pilolli (alpha-paranoici)]

Deleting the export XLIB_SKIP_ARGB_VISUALS=1 in /usr/bin/startlubuntu
now I am not able to reproduce the bug. I don't know if the problem is fixed
without the workaround also or if it doesn't occur on my laptop

[Julien Lavergne (gilir)]

2011/1/27 Pietro Pilolli <email address hidden>:
>
> I hope that you can purge this "workaround".

Yes, the workaround was removed for Natty (see bug #673704). It should
also be removed from maverick.

[Julien Lavergne (gilir)]

@Pietro
The workaround was removed for Natty (see bug #673704 for details)

[Sebastien Bacher (seb128)]

the gtk rgb change has never been shipped in a stable version and is not schedule to come back in the next cycles, closing the gtk task there