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Ethernet interface is down after GNOME crash

hr flag

I was doing some random, network intensive thing (apt-getting) on my Ubuntu 22.04 box today when I abruptly went from GNOME to a black screen. After booting up, I had a CLI only - no GNOME. All my files were OK.

After hours of fiddling, I still have no GNOME, and ip, ifconfig, and nmcli are all in agreement that my ethernet interface is down. sudo lshw -c network says my ethernet is DISABLED.

My hardware is an ethernet adapter connecting through USB. I have proven that the hardware works.

Question 1: What happened?
Question 2: What can I do about this?

sudo ip link set <device> on turns it on, but after a reboot it's off again.

Hannu avatar
ca flag
Do a `$ lsblk -ape7` and check the `RO` column, all devices should be "0" (i.e. in Read/Write mode, if not check which ones you need to be RW, attempt 'fsck' from `recovery mode`). Then try `apt update && apt upgrade` and see what happens; any errors? add the text shown to your question above.
Wascally Wabbit avatar
hr flag
lsblk -ape7 says RO is zero everywhere.
Hannu avatar
ca flag
One more try... 1) google "recovery mode", enable it. 2) in the menu do `fsck`, 3) and `enable network` (your 'up link on' command might be required) . 4) and then `apt update && apt upgrade` from the root shell prompt 5) See what happens; any errors? add the text shown to your question above
Hannu avatar
ca flag
This is to ensure that there isn't any outstanding updates or missing configuration; which might be the cause for your problem; you were in the process of doing system updates as the black screen appeared. Also; network being down should not make 'GNOME' not start.
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