la@Ragnarok:/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Logs$ cat Plex\ Media\ Server.log
Feb 22, 2016 11:33:45 [0x7f8aff7fe700] INFO - Plex Media Server v0.9.15.4.1679-e4df231 - ubuntu PC x86_64 - build: linux-ubuntu-x86_64 ubuntu
Feb 22, 2016 11:33:45 [0x7f8aff7fe700] INFO - Linux version: 3.16.0-57-generic (#77~14.04.1-Ubuntu SMP Thu Dec 17 23:20:00 UTC 2015)
Feb 22, 2016 11:33:45 [0x7f8aff7fe700] INFO - Processor AMD Athlon(tm) 7750 Dual-Core Processor
Feb 22, 2016 11:33:45 [0x7f8afd3fd700] INFO - Successfully retrieved OCSP response
Feb 22, 2016 11:33:48 [0x7f8b0b782840] ERROR - Error creating directory tmp: boost::filesystem::create_directory: Permission denied: "tmp"
Feb 22, 2016 11:33:49 [0x7f8afabfe700] INFO - Refreshing paths watched by LibraryUpdateManager
Feb 22, 2016 11:33:49 [0x7f8af7bff700] INFO - Sync: downloaded 1 sync list(s) with 1 sync items(s): 0 new, 0 updated, 0 deleted
Feb 22, 2016 11:33:50 [0x7f8af5bff700] ERROR - Network Service: Error in browser handle read: 125 (Operation canceled) socket=-1
Feb 22, 2016 11:33:50 [0x7f8af5bff700] INFO - Network Service: Abandoning browse socket, it was closed.
la@Ragnarok:/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Logs$Android/iOS apps work fine, this is running on Ubuntu LTS
Linux PC 3.16.0-57-generic #77~14.04.1-Ubuntu SMP Thu Dec 17 23:20:00 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux