I am running Debian 8.2 aka jessie, technically:
3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u6 (2015-11-09) x86_64 GNU/Linux
Anyhow, downloading and installing the standard Debian 64-bit Ubuntu version works fine! In Debian, it would have to be installed at the command line, something like this:
sudo dpkg -i Downloads/plexmediaserver_0.9.12.19.1537-f38ac80_amd64.deb
To be ready for the install, first remove any traces of any previous versions, something like this:
sudo apt-get --purge remove plexmediaserver
sudo rm --recursive /usr/lib/plexmediaserver
sudo rm --recursive /var/lib/plexmediaserver
After the install, I would certainly reboot. Running the command:
px ax|grep plex
should show you all occurrences of the various plexmediaserver modules.
In Debian, the menu item Plex Media Manager will be installed in the folder Other. Just click on the item and start setting up PMS.
Having said all this, in my experience, I cannot play a movie on my Roku longer than about 90 minutes without the Roku client running into an error and bouncing me out of the video. However, it is very easy to restart, just click on the movie title again, and resume from where you left off. Presently, I have only about a dozen different movie files, so I know I'm not overloading the system.
Finally, you cannot use "sudo stop plexmediaserver". This is something which does get lost when doing this simple install. Basically, if I have just added a few new channels and they are not showing up yet, I just reboot the server.
Any comments on this topic are welcome! ~James****