Autoremove blanked screen, now can't boot

[mahesh]

Tried to get a new USB bluetooth dongle working. Plugged it in, nothing seemed to work in bluedevil wizard

Think I tried reinstalling bluez

Terminal offered to autoremove a big chunk of packages no longer required

Allowed it to proceed

Halfway through the process screen went blank

Now, grub looks diffferent (like an earlier version) & cannot boot past a single line of text:

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[  10.661787] Bluetooth: hci0: Reading supported features failed (-16)
I can get to a root terminal; I tried disabling autorun in the last line of /etc/bluetooth/main.conf but still get the stall

Tried grub recovery mode / repair packages, still no joy

Posting from an extremely old machine with half the keyboard malfunctioning badly, apologies if responses slow. I need a hammer to get some characters.

Affected machine is just to my right sat in root terminal.

Is it possible to get to qterminal's command history from the grub-instigated root terminal prompt? to help shed light on exacty what I typed to cause the problem?

ok.. managed to find .bash_history in my home directory, hopefully this shows what I did..

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sudo systemctl status bluetooth.service
sudo systemctl enable bluetooth.service
sudo systemctl start bluetooth.service
sudo vim /etc/bluetooth/main.conf (I commented/disabled autorun)
sudo apt install bluez
sudo apt autoremove (think this is where I lost the screen)
sudo apt update (this command and the following I think were my attempts at recovering)
sudo apt upgrade
sudo apt install bluez
sudo apt remove bluez
sudo apt install bluez (end of command history)
help. exclamation mark and smiley face (but my current keyboard can't do that)