Yeah now i have 2 dedicated ubuntu 16 lts installs on 2 machines...
And can't use the latest binary because... it does not run at all..
And the latest working binary just does not care to give any sound for notifications..
Hilarious.... really...
"Latest binary"?? You are downloading the older leonArdo, not Margin. And even leonArdo, I always ran on Linux without these weird issues you are facing. Yeah, crashes, memory leaks etc. it happened in the past (and now they are vastly improved, although still happening in some edge cases I reported them), but simply not running because of lib issues? NEVER. In fact, I could even run it on different distros than the certified Ubuntu LTS. What I noticed is that you seem to have a highly modified Ubuntu and with your "hacks" you made it incompatible. Messed with LD_LIBRARY_PATH, perhaps? Why not install a VANILLA Ubuntu 16.04.4 LTS and run Margin (or even leonArdo!) from it? I would even bet some Satoshis that it will run straight out of the box on a vanilla install.
"Ah, but I want to tweak my Linux to the extreme and still run software xyz." Well, that's up to you, NO SOFTWARE DEVELOPER can guarantee their software will run on every freakin' tweaked Linux distro out there.
But I'll show you what I just did on a Kubuntu 18.04 LTS right now to check if there was something weird with the paths, perhaps they wrote a shitty shell script that expected Margin on a particular base dir? I noticed you are running from ~/opt, so I did the same:
vm@vm-kubuntu01:~/opt$ wget https://margin.de/download/file/273 -O margin-linux.zip
--2018-05-15 01:56:17-- https://margin.de/download/file/273
Resolving margin.de (margin.de)... 104.20.3.168, 104.20.95.167, 2400:cb00:2048:1::6814:3a8, ...
Connecting to margin.de (margin.de)|104.20.3.168|:443... connected.
HTTP request sent, awaiting response...
200 OK
Length: 28657584 (27M) [application/zip]
Saving to: ‘margin-linux.zip’
margin-linux.zip 100%[====================================================================================================================>] 27,33M 4,28MB/s in 8,0s
2018-05-15 01:56:26 (3,44 MB/s) - ‘margin-linux.zip’ saved [28657584/28657584]
vm@vm-kubuntu01:~/opt$ unzip margin-linux.zip
Archive: margin-linux.zip
creating: margin-linux/
creating: margin-linux/licences/
inflating: margin-linux/licences/readme.txt
inflating: margin-linux/run-margin.sh
inflating: margin-linux/margin.bin
creating: margin-linux/plugins/
creating: margin-linux/plugins/platforms/
inflating: margin-linux/plugins/platforms/libqxcb.so
creating: margin-linux/icons/
inflating: margin-linux/icons/margin.svg
creating: margin-linux/lib/
inflating: margin-linux/lib/libQt5Core.so.5
inflating: margin-linux/lib/libQt5Widgets.so.5
inflating: margin-linux/lib/libQt5WebSockets.so.5
inflating: margin-linux/lib/libQt5XcbQpa.so.5
inflating: margin-linux/lib/libQt5Svg.so.5
inflating: margin-linux/lib/libicuuc.so.56
inflating: margin-linux/lib/libQt5Gui.so.5
inflating: margin-linux/lib/libicui18n.so.56
inflating: margin-linux/lib/libQt5DBus.so.5
inflating: margin-linux/lib/libQt5Network.so.5
inflating: margin-linux/lib/libQt5NetworkAuth.so.5
inflating: margin-linux/lib/libicudata.so.56
inflating: margin-linux/margin.desktop
vm@vm-kubuntu01:~/opt$ cd margin-linux/
vm@vm-kubuntu01:~/opt/margin-linux$ ./run-margin.sh
installing margin icon to user account
Not running on Ubuntu 16.04
-: FAILED
sha256sum: WARNING: 1 computed checksum did NOT match
Downloading and extracting https://margin.de/static/libssl.tar.gz
VOILÀ, Margin runs!