[LAPTOP] Unable to boot

[kostas]

Hello community, perhaps someone can help me? I accidentally shut down my laptop while it was updating and now it doesn't boot properly, it stops at the kubuntu flashing screen. I tried to turn off automatic updates (https://www.garron.me/en/linux/turn-...ic-update.html) and also remove the memory cache (free && sync && echo 3 > /proc/sys/vm/drop_caches && free) but nothing helped. Any ideas? Thanks in advance. K

[Snowhog]

Did you try booting into the recovery mode (selected via grub)? You could then try to restart the upgrade with

apt-get update
apt-get upgrade

You may need to run

dpkg --configure -a

to fix the partially installed packages.

[kostas]

Thank you for your reply! Everything I did was on the recovery mode. I tried for a couple of hours to connect to the internet via wi-fi but with no luck, and I don't have an ethernet cable at the moment. That's why I tried that options...

[kostas]

Unfortunately, in the first case the shell never recovers after the command
$ sudo dhclient wlan0

and in the second after i hit
$ sudo iwconfig wlan0 key PASSPHRASE
i get the message
$ Error for wireless request "Set Encode" (8B2A): invalid argument "MY PASSWORD"
...

[xennex81]

The command for activating WPA is "wpa_supplicant -i wlan0 -c passphrase_file". This puts it in the foreground and you can see its messages. Press CTRL-Z to go background, type "bg" and then enter "dhclient wlan0" when you are connected. I always have WPA keys, it's the most common scenario.

[xennex81]

Let's say it's another wise lesson in how it shouldn't be done (the update process).