I have a lenovo x390 laptop with an intel CPU. I've been running Tumbleweed on
it since a while because I needed a newer kernel compared to Leap to get my
network card to work.

Everything worked fine since I upgraded to 5.10.x. The upgrade caused the
ethernet card to became unreliable (like it happened with old Leap 15.1
kernel).

The network card works fine for some time, then it suddenly loses the
connection. I can see Gnome NetworkManager trying to setup the card, but the
process never ends.

The x390 doesn't have a physical eth port, it has a proprietary adapter that
provides that to the laptop. This adapter is plagued by the issue.

The same issue happens when I connect the computer to its USB-C docking station
(an official one provided by Lenovo). The docking station provides an eth port
which is affected by this issue.

The 5.9.14-1.2 and the 5.9.12-1.1 kernels are the last kernels I tested on my
computer that proved to be fine.


I'll try to collect more detailed logs from syslog, but right now it's a bit
hard for me because I cannot reproduce the issue. I just have to wait for it to
happen...