I'm happy to report that I was able to boot normally with gdm now, and it didn't get stuck. Yesterday I removed and reinstalled gdm3 and ubuntu-desktop, as suggested here, rebooted, but it was still the same (i.e. stuck in reboot), so I switched back to lightdm. Today when I turned it on it started normally using gdm (although I don't remember switching it to gdm again!).
This is the dpkg log, in case it helps someone - the problem started after July 3rd, and was solved after July 10th: 2018-07-03 09:56:21 install linux-cloud-tools-4.15.0-24:amd64 <none> 4.15.0-24.26 2018-07-03 09:56:21 install linux-cloud-tools-4.15.0-24-generic:amd64 <none> 4.15.0-24.26 2018-07-03 09:56:21 install linux-modules-4.15.0-24-generic:amd64 <none> 4.15.0-24.26 2018-07-03 09:56:25 install linux-image-4.15.0-24-generic:amd64 <none> 4.15.0-24.26 2018-07-03 09:56:26 install linux-modules-extra-4.15.0-24-generic:amd64 <none> 4.15.0-24.26 2018-07-03 09:56:38 install linux-headers-4.15.0-24:all <none> 4.15.0-24.26 2018-07-03 09:57:03 install linux-headers-4.15.0-24-generic:amd64 <none> 4.15.0-24.26 2018-07-03 09:57:19 install linux-tools-4.15.0-24:amd64 <none> 4.15.0-24.26 2018-07-03 09:57:20 install linux-tools-4.15.0-24-generic:amd64 <none> 4.15.0-24.26 2018-07-04 11:58:33 install lightdm:amd64 1.26.0-0ubuntu1 1.26.0-0ubuntu1 2018-07-04 11:58:34 install libgeoclue0:amd64 <none> 0.12.99-4ubuntu2 2018-07-04 11:58:34 install libnm-util2:amd64 <none> 1.10.6-2ubuntu1 2018-07-04 11:58:35 install libnm-glib4:amd64 <none> 1.10.6-2ubuntu1 2018-07-04 11:58:35 install geoclue:amd64 <none> 0.12.99-4ubuntu2 2018-07-04 11:58:35 install geoclue-ubuntu-geoip:amd64 <none> 1.0.2+18.04.20180223-0ubuntu1 2018-07-04 11:58:35 install libpanel-applet3:amd64 <none> 1:3.26.0-1ubuntu5 2018-07-04 11:58:36 install indicator-applet:amd64 <none> 12.10.2+17.10.20170425-0ubuntu1 2018-07-04 11:58:36 install indicator-application:amd64 12.10.1+17.04.20161201-0ubuntu1 12.10.1+17.04.20161201-0ubuntu1 2018-07-04 11:58:36 install liburl-dispatcher1:amd64 <none> 0.1+17.04.20170328-0ubuntu4 2018-07-04 11:58:37 install indicator-datetime:amd64 15.10+17.10.20170829.2-0ubuntu4 15.10+17.10.20170829.2-0ubuntu4 2018-07-04 11:58:37 install liblightdm-gobject-1-0:amd64 <none> 1.26.0-0ubuntu1 2018-07-04 11:58:37 install indicator-keyboard:amd64 0.0.0+18.04.20180216-0ubuntu1 0.0.0+18.04.20180216-0ubuntu1 2018-07-04 11:58:37 install indicator-messages:amd64 13.10.1+17.04.20170120-0ubuntu2 13.10.1+17.04.20170120-0ubuntu2 2018-07-04 11:58:38 install indicator-power:amd64 12.10.6+17.10.20170829.1-0ubuntu4 12.10.6+17.10.20170829.1-0ubuntu4 2018-07-04 11:58:38 install indicator-session:amd64 17.3.20+17.10.20171006-0ubuntu1 17.3.20+17.10.20171006-0ubuntu1 2018-07-04 11:58:39 install ubuntu-touch-sounds:all <none> 15.08 2018-07-04 11:58:39 install unity-greeter:amd64 18.04.0+18.04.20180314.1-0ubuntu2 18.04.0+18.04.20180314.1-0ubuntu2 2018-07-04 11:58:40 install indicator-sound:amd64 12.10.2+18.04.20180420.3-0ubuntu1 12.10.2+18.04.20180420.3-0ubuntu1 2018-07-04 16:12:19 install libhavege1:amd64 <none> 1.9.1-6 2018-07-04 16:12:20 install haveged:amd64 <none> 1.9.1-6 2018-07-06 17:44:45 install linux-modules-4.15.0-26-generic:amd64 <none> 4.15.0-26.28 2018-07-06 17:44:49 install linux-image-4.15.0-26-generic:amd64 <none> 4.15.0-26.28 2018-07-06 17:44:49 install linux-modules-extra-4.15.0-26-generic:amd64 <none> 4.15.0-26.28 2018-07-06 17:45:00 install linux-headers-4.15.0-26:all <none> 4.15.0-26.28 2018-07-06 17:45:25 install linux-headers-4.15.0-26-generic:amd64 <none> 4.15.0-26.28 2018-07-09 22:27:46 install linux-cloud-tools-4.15.0-26:amd64 <none> 4.15.0-26.28 2018-07-09 22:27:46 install linux-cloud-tools-4.15.0-26-generic:amd64 <none> 4.15.0-26.28 2018-07-09 22:27:49 install linux-tools-4.15.0-26:amd64 <none> 4.15.0-26.28 2018-07-09 22:27:50 install linux-tools-4.15.0-26-generic:amd64 <none> 4.15.0-26.28 2018-07-10 17:59:06 install gdm3:amd64 <none> 3.28.2-0ubuntu1.3 2018-07-10 17:59:07 install ubuntu-desktop:amd64 <none> 1.417 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1779827 Title: failure to boot with linux-image-4.15.0-24-generic Status in Ubuntu: Confirmed Status in linux package in Ubuntu: In Progress Status in The Bionic Beaver: Confirmed Status in linux source package in Bionic: Fix Committed Bug description: This was the last OK then my 18.04 hangs after an update this morning. 07:00 AM CEST Last Ok in boot was Started gnome display manager. dispatcher service ...... tem changes.pp link was shut down Tried install lightdm from command line and the response was lastest already installed. Probably it is what is coming after the lastest OK which is to be the error. And here I have lots of guesses...... Any Ideas ? I need to do some work and I may not be waiting long. Search and browsed and now close to give up. Yeah it is a Lenovo. Guys: turn of auto update it is a machine killer. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1779827/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
