Hi, I'm the one who created the post on AskUbuntu.
In the certification, it appears that the Latitude 5420 is equipped with Intel I219-V ethernet cards, but this is not the case on ours, which are equipped with Intel I219-LM cards, maybe it's a clue?
Here is the kernels I've tested :
- 5.8.0-43-generic (fresh install from Ubuntu 20.04.2 iso)
- 5.8.0-55-generic (upgrade from Ubuntu 20.04.2 iso)
- 5.6.0-1032-oem (fresh install from Dell 20.04.1 iso)
- 5.10.0-1029-oem (upgrade from Dell 20.04.1 iso)
- 5.11.0-16-generic (fresh install from Ubuntu 21.04 iso)
- 5.11.0-18-generic (upgrade from Ubuntu 21.04 iso)
Also, I try to force the installation of the last e1000e drivers (v3.8.4) both on a fresh install from Ubuntu 20.04.2 iso and Dell 20.04.1 iso but the problem still here.
And, today I tried to modify the GRUB but nothing change, always this slow ethernet...
Hi, I'm the one who created the post on AskUbuntu.
In the certification, it appears that the Latitude 5420 is equipped with Intel I219-V ethernet cards, but this is not the case on ours, which are equipped with Intel I219-LM cards, maybe it's a clue?
Here is the kernels I've tested :
- 5.8.0-43-generic (fresh install from Ubuntu 20.04.2 iso)
- 5.8.0-55-generic (upgrade from Ubuntu 20.04.2 iso)
- 5.6.0-1032-oem (fresh install from Dell 20.04.1 iso)
- 5.10.0-1029-oem (upgrade from Dell 20.04.1 iso)
- 5.11.0-16-generic (fresh install from Ubuntu 21.04 iso)
- 5.11.0-18-generic (upgrade from Ubuntu 21.04 iso)
Also, I try to force the installation of the last e1000e drivers (v3.8.4) both on a fresh install from Ubuntu 20.04.2 iso and Dell 20.04.1 iso but the problem still here.
And, today I tried to modify the GRUB but nothing change, always this slow ethernet...