This happened to me with 12.04, and the behavior is consistent with 14.04.
Build a fresh core using LMCE-1404-20161119175532-i386.iso. Log in via ssh and update everything. When the orbiter times out, I am shown pictures as you would expect.
Create disk less image successfully.
My first orbiter created from the image displays a clock for a screen saver. Three subsequent media directors added to the system display pictures not a clock.
Looking in the web-admin under files & media / screensaver the path is listed as /home/public/data/pictures/flickr/ and the flikr script is active. (It would have to be for the server and two other orbiters) Under advanced / configuration / devices and looking in the tree under Generic PC as MD / Onscreen Orbiter / Photo screen saver the configuration is identical among the four listed orbiters.
All of these computers are using the U1 basic interface.
Thoughts, suggestions for troubleshooting?
Sounds like the photo screen saver program may not be running or have an error. Check the logs on that MD.
Sent from my Nexus 5 using Tapatalk
Looking in /var/log/pluto/56_LaunchPhoto_Screen_Saver.sh.log I found
Cannot init the video mode! (Couldn't find matching GLX visual)
followed by multiple entries similar to below
Failed to load '/home/public/data/pictures/flickr/2017/01/01/31917161801.jpg'
Check the file to make sure it exists from the director
ll /home/public/data/pictures/flickr/2017/01/01/31917161801.jpg
-rw-r--r-- 1 root root 175768 Jan 1 20:22 /home/public/data/pictures/flickr/2017/01/01/31917161801.jpg
Looking at my other media directors I do not have a LaunchPhoto_Screen_Saver log
Checking the installed video (from lspci)
00:0d.0 VGA compatible controller: NVIDIA Corporation C61 [GeForce 6150SE nForce 430] (rev a2)
Installed nvidia software
dpkg -l | grep nvid
ii nvidia-352 367.57-0ubuntu0.14.04.1 i386 Transitional package for nvidia-367
ii nvidia-367 367.57-0ubuntu0.14.04.1 i386 NVIDIA binary driver - version 367.57
ii nvidia-opencl-icd-367 367.57-0ubuntu0.14.04.1 i386 NVIDIA OpenCL ICD
ii nvidia-prime 0.6.2.1 i386 Tools to enable NVIDIA's Prime
ii nvidia-settings 331.20-0ubuntu8 i386 Tool for configuring the NVIDIA graphics driver
Recommendations on resolving the video mode / GLX issue?
You could try re-installing the video driver and ensure the appropriate libraries are installed. Is this UI1 or UI2? It looks like it's trying to start the GL screensaver (requiring libgl1-mesa-glx or the appropriate version for the hardware enablement stack on your system, you can check /etc/pluto.conf for the current version).
Thanks for pointing me in the correct direction.
The installed video card is an
NVIDIA Corporation C61 [GeForce 6150SE nForce 430] (rev a2)
The nvidia-352 driver was installed by default.
Once I loaded the nvidia-304 (correct for this generation of older hardware) driver and rebooted, the photo screen saver started working.
Issue resolved.