Please loot at this: https://www.linuxquestions.org/questions/linux-networking-3/intel-x540-t2-network-card-installed-but-only-at-100mbit-cant-change-or-improve-4175686736/
It seems that you need a 8x pcie slot to work fine On Mon, Nov 14, 2022 at 12:25 PM hw <h...@adminart.net> wrote: > > Hi, > > I have an X540-AT2 network card in my backup server and it worked when I > was > running Fedora on the server. > > I installed Debian on it and wanted to make backups with rsync, but the > connection via this network card is now intermittent where it used to be > stable > with Fedora. > > The link always shows as up. Every now and then rsync halts and pings > don't get > through. After a while, rsync continues to work and pings also get through > again. > > The interface is directly connected (i. e. without a switch in between) to > another 10GB network card. > > When I make the backups over the "normal" 1GB link through a different > network > card (via switch), the 1GB connection is fine. > > > Do I need to do something special to get the X540-AT2 to work? Is this a > known > issue with Debian? How could I debug this? > >
