Nazar, Yes I am 64 bit OS
uname -a: Linux TIS-PC 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
lsb_release -a: Distributor ID: Ubuntu Description: Ubuntu 16.04 LTS Release: 16.04 Codename: xenial
However this workaround worked for me as well, Slack is not showing classic notifications anymore:
sudo touch /usr/lib/libunity-electron_notification_fix
Nazar, Yes I am 64 bit OS
uname -a:
Linux TIS-PC 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
lsb_release -a:
Distributor ID: Ubuntu
Description: Ubuntu 16.04 LTS
Release: 16.04
Codename: xenial
However this workaround worked for me as well, Slack is not showing classic notifications anymore:
sudo touch /usr/lib/ libunity- electron_ notification_ fix