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Jesse Xfce wallpaper stuck




debian-user:

I have a Dell Inspiron E1505/6400 laptop with Debian and Xfce. I am running an external monitor:

2017-04-04 19:01:33 dpchrist@jesse ~
$ cat /etc/debian_version
8.7

2017-04-04 19:01:45 dpchrist@jesse ~
$ uname -a
Linux jesse 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1+deb8u2 (2017-03-07) x86_64 GNU/Linux

2017-04-04 19:02:36 dpchrist@jesse ~
$ dpkg-query -l xfce4
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version      Architecture Description
+++-==============-============-============-=================================
ii xfce4 4.10.1 all Meta-package for the Xfce Lightwe


Currently, the desktop wallpaper is improperly tiled and stuck:

1. The default Debian 8 wallpaper appears (1024x768) in the upper left portion of the my 1920x1080 monitor, and portions of the same image appear to the right, below, and in the lower right corner.

2. If I go to Applications Menu -> Settings -> Desktop -> Background and choose a different image, tiling, etc., the desktop wallpaper stays the same.


Searching /var/log for 'xfce', I see an endless stream of error messages:

2017-04-04 19:11:24 root@jesse ~
# grep -ri xfce /var/log/messages | tail
Apr 4 16:02:07 jesse org.xfce.FileManager[1108]: Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory Apr 4 16:02:11 jesse org.xfce.FileManager[1108]: Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory Apr 4 16:02:12 jesse org.xfce.FileManager[1108]: Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory Apr 4 16:02:13 jesse org.xfce.FileManager[1108]: Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory Apr 4 16:02:16 jesse org.xfce.FileManager[1108]: Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory Apr 4 16:02:18 jesse org.xfce.FileManager[1108]: Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory Apr 4 16:02:18 jesse org.xfce.FileManager[1108]: Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory Apr 4 16:02:19 jesse org.xfce.FileManager[1108]: Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory Apr 4 16:02:20 jesse org.xfce.FileManager[1108]: Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory Apr 4 16:02:21 jesse org.xfce.FileManager[1108]: Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory


My laptop has Intel GM945 chipset graphics, not NVIDIA.


/var/log/dmesg is of no help:

2017-04-04 19:13:56 root@jesse ~
# cat /var/log/dmesg
(Nothing has been logged yet.)

2017-04-04 19:13:58 root@jesse ~
# ll /var/log/dmesg
-rw-r----- 1 root adm 31 2017/02/21 21:52:40 /var/log/dmesg


Any suggestions for troubleshooting this?


David