Thanks All for your great help. I am also affected by this issue with my Dell 5420 equipped with a I219-LM card (just arrived home yesterday).
I came across the AskUbuntu thread from Dell Community forums: https://www.dell.com/community/Latitude/Dell-latitude-5420-5520-intel-ethernet-on-ubuntu-20-04/m-p/7889980 After the "sudo ethtool -C xxxx rx-usecs 6000" command I keep seeing rx_errors and rx_crc_errors with: sudo ethtool -S <device> | grep -i err Do you know why? Many thanks, Sebastian -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.10 in Ubuntu. https://bugs.launchpad.net/bugs/1930754 Title: e1000e extremly slow Status in OEM Priority Project: Confirmed Status in linux-oem-5.10 package in Ubuntu: Confirmed 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 5.8.0-55 I've used latest ubuntu 20.04.2 kernel 5.10.0-1029-oem 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/oem-priority/+bug/1930754/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
