Public bug reported:
We have dell latitude 5420 & 5520 laptops with onboard intel ethernet
controller.
Problem is that the ethernet port is extremely slow. about 100kbyte/s
throughput while on a gigabit connection.
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 + 5420
nic: Ethernet Connection (13) I219-LM
ubuntu 20.04.2
module: e1000e
Please assist. Thank you
** Affects: linux-oem-5.10 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1930754
Title:
e1000e extremly slow
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