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I did a do_release_upgrade on my Ubuntu 16.04 (there were errors, in particular some were related to X11 or Xorg) and now I have this at boot:

enter image description here

Help !

EDIT I reinstalled grub from a live Ubuntu and now I have this at boot, still need help! enter image description here

BOOT INFO is here http://paste.ubuntu.com/p/HKwrjh7R4d/

BOOT REPAIR report is here http://paste.ubuntu.com/p/jHwQNZ8Ryv/

lsb_release -a gives 18.04 Bionic .

$ lspci -k | grep -A 2 -i "VGA" gives

VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09)
Subsystem: Lenovi HD Graphics 5500
kernel driver in use i915

then:

sudo apt-add-repository ppa:ubuntu-x-swat/updates
sudo apt-get update && sudo apt-get upgrade

EDIT 2 I have access to command line via tty1, I tried to reinstall xserver sudo apt-get install --reinstall xserver-xorg but it still boots on the black screen with [ OK ] lines as in the screeshot above.

EDIT 3 I tried reinstalling GDM

sudo apt purge gdm gdm3
sudo apt install gdm3 ubuntu-desktop
sudo dpkg-reconfigure gdm3 #to choose GDM
systemctl restart gdm

I also tried startx and I get:

X.Org X Server 1.19.6
...
using system config directory "/usr/share/X11/xorg.conf.d"
xf86EnableIOPorts: failed to set OIPL for I/O (Operation not permitted)
xinit: connection to server lost
waiting for X server to shut down. (II) server terminated sucessfully (0). Closing log file.
Louis
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  • mmm yes and no, I reinstalled grub as recommended in the other thread with sudo grub-install --root-directory=/mnt/ /dev/sda, a bit better but still not booting...I'm editing the question. I remember I had some X issue..display wise....anyway I can reinstall X ? – Louis Dec 02 '20 at 18:28
  • I tried a few things with Xorg but in vain. Can you help ? – Louis Dec 03 '20 at 08:17
  • Do a fresh install. This happens. – Pilot6 Dec 03 '20 at 08:31
  • no I don't want to do a fresh install. I would have done it already. – Louis Dec 03 '20 at 08:43

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