Background fails to redraw

[Bryce Harrington]

Binary package hint: unity-2d

After upgrading to oneiric, I booted on the natty kernel (the oneiric kernel left me at a corrupted busybox prompt). It loaded unity-2d (presumably because the box is on a kvm). This seemed to work, however dragging windows around left garbage (see photo).

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: unity-2d (not installed)
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
Architecture: i386
Date: Tue May 17 11:34:31 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110202)
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity-2d
UpgradeStatus: No upgrade log present (probably fresh install)

[Florian Boucault (fboucault)]

Thanks for the bug report Bryce!
Do you have the same issue in an "Ubuntu Classic" session (GNOME 2)?
Does it still happen in you set the gconf key /apps/metacity/general/compositing_manager to true?

[Jean-Baptiste Lallement (jibel)]

I don't think it's a unity-2d specific error because I get it with compiz as well and on different systems.

This error occurs when the background is set to a fixed color (not gradient) rather than a picture but I haven't been able to figure out what causes this. The 'trailing effect' is visible even before login, when the gdm window is resized when the user selects an account.

[Fabien Tassin (fta)]

as discussed on irc, it's because of the default background value:

$ gsettings get org.gnome.desktop.background picture-uri
'file:///usr/share/themes/Adwaita/backgrounds/stripes.jpg'

it doesn't exist unless you have gnome-themes-standard installed.

The 2 workarounds are:

1/ change that key to a valid URI (still starting with file://)

or

2/ install gnome-themes-standard

The real fix is to change the default value to match an existing Ubuntu theme.

[Sebastien Bacher (seb128)]

does it work if you select a valid wallpaper in the gnome-control-center?

[Jean-Baptiste Lallement (jibel)]

yes it does. The desktop doesn't repaint only when the background is set to a plain color.

[Sebastien Bacher (seb128)]

the issue is a nautilus one not an unity bug, the fix will be in the next upload

[Fabio Marconi (fabiomarconi)]

uhmm
i can have this only in compiz, not in unity 2d

[Fabio Marconi (fabiomarconi)]

in Unity 2d everythings working fine in two systems, except the BFB and app and file buttons on the launcher

[Fabio Marconi (fabiomarconi)]

Yes, reproducible only in 3d, nvidia and intel, so I think is compiz related.

[Fabio Marconi (fabiomarconi)]

remove duplicate 791125

[Sebastien Bacher (seb128)]

sorry I forgot to close it but that got fixed just after alpha1

[Sebastien Bacher (seb128)]

the upload was

gsettings-desktop-schemas (3.0.1-1ubuntu1) oneiric; urgency=low

  * gsettings-desktop-schemas.gsettings-override: set the default ubuntu
    wallpaper and display the desktop by default.