This might be related to your kernel starting in recovery mode with "nomodeset":
[ 36.451] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-43-generic root=UUID=eb14491b-f949-4add- b1ee-9395094ec859 ro recovery nomodeset Please try rebooting and as soon as the purple screen appears, hit Esc. Now in the menus select a standard kernel that is not recovery mode. ** Summary changed: - ??? + Image icons appear as black rectangles instead of previews ** Package changed: xorg (Ubuntu) => gtk+3.0 (Ubuntu) ** Tags added: nouveau -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1809217 Title: Image icons appear as black rectangles instead of previews To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1809217/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
