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I rarely reboot. Tonight I had some updates that failed (one that I remember was python). I figured it was odd, so I would reboot and try updating again. Only now I get stuck on

[ OK ] Started GNOME Display Manager. Dispatcher Service......tem changes.pp link was shut down...."

I believe I have kernel 4.15.0.24; I was able to reboot to grub once and try 4.15.0.23, but it ended up in the same spot.

I also tried CTRL+ALT+F2 but keyboard gos unresponsive at that point. My system is a System76 Sable Touch 3. 4th Generation Intel® Core™ i5-4440S ( 2.80GHz - 6MB cache - 4 Cores - HD Graphics 4600 ), so I am not certain it would be the same issue as those with the nvidia cards.

I am uncertain how to proceed in troubleshooting and hopefully, back up and running.

I was able to eventually get in by CTRL+ALT+F3 log in and install lightdm. Obviously it is just a temp workaround, but there are still more issues.

I get many python3 & dkpkg errors when sudo apt update && sudo apt upgrade. also: 

Errors were encountered while processing:
 python3
 update-notifier-common
 python3-update-manager
 gnome-shell
 update-notifier
 unattended-upgrades
 update-manager
 gnome-menus
 update-manager-core
 gdm3
E: Sub-process /usr/bin/dpkg returned an error code (1)
Eskander Bejaoui
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TR Precht
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2 Answers2

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You can try 

sudo dpkg --configure -a

and / or 

sudo apt-get -f install
tardis
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  • Get some errors when trying both of those. :-( – TR Precht Jul 17 '18 at 03:21
  • Show us these errors... – tardis Jul 17 '18 at 05:57
  • It was too long to post here, so https://pastebin.ubuntu.com/p/XMpDYYTJkH/ – TR Precht Jul 18 '18 at 00:48
  • You could try to force to remove hplip-data by using the hints from https://askubuntu.com/questions/525088/how-to-delete-broken-packages-in-ubuntu and/or https://stackoverflow.com/questions/27455626/how-to-remove-an-incomplete-package-by-using-apt-get – tardis Jul 18 '18 at 06:25
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sudo apt-get install --reinstall hplip hplip-data
sudo apt-get install --reinstall python3

This is what ended up helping me. Thanks to https://bugs.launchpad.net/ubuntu/+source/python3-defaults/+bug/1779237

TR Precht
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