Comment 4 for bug 1775131

Hello,

feeling very unhappy possibly joining the club. We have a current 18.04.1 x86_64 desktop system. Being an educational institution we clone our master installation PC's image to ~80 client machines sharing identical hardware. The subsequently described problems appear both on our master and many (if not all) client PC's.

Though times vary in between 5 and 15 minutes the network connection disappears completely. In case I'm lucky having an open shell on the victim »ifconfig« shows the external network interface's IP unassigned. So the desktop freezes completely.

I've attached an excerpt from /var/log/syslog that might lead to a clue. We've current BIOS on all machines.

Despite the attached excerpt full archived /var/log is available at https://cloud.mi.hdm-stuttgart.de/index.php/s/FNgwQs9Pwb64yCR.