I downloaded Ubuntu version 16.04, created a bootable usbdisk from the ISO, and booted up my Dell Latitude E6420 laptop without installing anything. The desktop worked fine, both mouse/mousepad and network. After that when I installed it on to the harddrive, the mouse and network does not work. The system can not find either mouse, mousepad or network.
I have tried to install it several times, and Kubuntu 16.04 as well. I even installed version 15.10, same result. Every install fails to deliver mouse and network on my pc. I then installed it on a Dell Optiplex 990, same result.
The weird part is that when I boot the pc with the usbstick, everything works fine.
Has anyone else seen this behavior or had trouble with Dell Computers and later versions of Ubuntu?
This is not a duplicate of the question in "Dell Inspiron 3551 Unresponsive Touchpad" as this is not limited to the mousepad, but also applies to plugged in mouse, networkcard (both cable and wifi).
I have tried the solution in the question on the 15.10 installation, and it did not work. I got the following error when trying the command sudo depmod -a:
- depmod: ERROR: could not open directory /lib/modules/3.13.0-43-generic: No such file or directory
- depmod: ERROR: could not search modules: No such file or directory.
UPDATE: I have now reinstalled version 16.04, and found that when I do a uname -r command, it reports version 3.13, not 4.4. I cannot find /var/log/messages either. Could this be a kernel issue with version 4.4 and Dell, and then falls back to an earlier version?
I have tried to force it to load 4.4, but it does not comply. Any ideas to what can be done to sort this?
