Finally somebody else who is reporting the same. https://askubuntu.com/questions/1344532/wired-network-extremely-slow/1345978#1345978
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.6 in Ubuntu. https://bugs.launchpad.net/bugs/1931977 Title: e1000e extremly slow Status in linux-oem-5.6 package in Ubuntu: New Bug description: We have dell latitude 5420 & 5520 laptops with onboard intel ethernet controller. Problem is that the ethernet port is extremely slow. about 100kbyte/s download throughput while on a gigabit connection. Upload seems to work just fine. Also when I pxe boot the system it's also painfully slow. But here comes the funny part. When I attach a usb memory stick the throughput of the networkcontroller is as expected. I've used latest ubuntu 20.04.2 kernel 5.6.0-1032-oem (Certified by ubuntu and dell) I've used latest ubuntu 20.04.2 kernel 5.10.0-1029-oem I've used latest ubuntu 20.04.2 kernel 5.8.0-55 Turns out this problem is not showing up when I manually install the 5.8.18 kernel. Also when I create my own iso with the help of Cubic and install the 5.8.18 kernel in it the pxe boot is working as expected with high throughput system: Dell latitude 5420 + 5520 nic: Ethernet Connection (13) I219-LM ubuntu 20.04.2 module: e1000e Please assist. Thank you To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-oem-5.6/+bug/1931977/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
