Today I attempted to upgrade from Kubuntu 14.10 to Kubuntu 15.04 on a ThinkPad X250 notebook following this guide: https://help.ubuntu.com/community/VividUpgrades/Kubuntu

I came to the dialog box asking to confirm "Package Changes". I selected "Start Upgrade". The upgraded started but now it is stuck. I can see the window "Distribution Upgrade" but it is greyed out. It's like that for at least 6 hours now. I think the last thing I saw before the window was greyed out was something like "configuring... systemd"

Kubuntu is still responding. I have a notification that uppdates are available for my system. lsb_release -a shows:

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 15.04
Release:        15.04
Codename:       vivid

In /etc/apt/sources.list all repositories point to vivid universe.

Something similar seems to have happened here. But this guy restarted his system and had to perform a fresh install. This could be a similar issue, but there the distribution upgrade window was not grayed out. Here the upgrade was stuck but opposed to there I cannot see the terminal. This is also different as it hangs somewhere else. However, following but I followed the idea to check with ps which processes might be running:

$ ps -ef | grep upgrade
root      2877  1659  3 14:23 ?        00:12:27 /usr/bin/python3 /tmp/ubuntu-release-upgrader-uirakud8/vivid --mode=desktop --frontend=DistUpgradeViewKDE

If I try to close the Distribution Upgrade window a Warning appears:

Application "ubuntu-release-upgrader" is not responding
You tried to close window "Distribution Upgrade" from application "ubuntu-release-upgrader" (Process ID: 2586) but the application is not responding.
Do you want to terminate this application? 
Warning: Terminating the application will close all of its child windows. Any unsaved data will be lost.

What should I do to finish the upgrade? Is it safe to restart my computer and try again?

  • Have you also Unity installed? Compiz isn't necessary for KDE. Try to remove the compiz packages in tty1 (Ctrl-Alt-F1). – A.B. Oct 23 '15 at 8:44
  • No I do not have unity. In fact, compiz-core is not even installed. I should check for the other packages. Ctrl-Alt-F1 works when the boot hangs at starting version 219. Thanks! – Fabian Rost Oct 23 '15 at 8:47
  • Start the Recovery Mode in Grub. You can find this menu entry behind Advanced. – A.B. Oct 23 '15 at 8:47
  • I do not have compiz-core or compiz-gnome installed. – Fabian Rost Oct 23 '15 at 8:51
  • Other compiz packages? dpkg -l | grep compiz – A.B. Oct 23 '15 at 8:52

Here is what I did to fix it. In the end I basically upgraded to 15.10 without getting 15.04 to run properly. First I killed the upgrade process:

$sudo kill 2877
$sudo dpkg --configure -a

Configuration file '/etc/systemd/logind.conf'
 ==> Modified (by you or by a script) since installation.
 ==> Package distributor has shipped an updated version.
   What would you like to do about it ?  Your options are:
    Y or I  : install the package maintainer's version
    N or O  : keep your currently-installed version
      D     : show the differences between the versions
      Z     : start a shell to examine the situation
 The default action is to keep your current version.
*** logind.conf (Y/I/N/O/D/Z) [default=N] ?

I had manually edited logind.conf before, so this question makes sense. Maybe, this was the point where the upgrade was stuck. I answered Y.

$ sudo apt-get update

gave the following message:

W: Unknown Multi-Arch type 'no' for package 'compiz-core'
W: Unknown Multi-Arch type 'no' for package 'compiz-gnome'
W: Unknown Multi-Arch type 'no' for package 'compiz-core'
W: Unknown Multi-Arch type 'no' for package 'compiz-gnome'
W: You may want to run apt-get update to correct these problems

then I performed an upgrade of my packages using aptitude. Which gave me the following errors:

Errors were encountered while processing:

I removed exactly those packages using aptitude and performed another upgrade. This one did not show errors. The I performed another upgrade. Then I rebooted my machine but it hangs while booting. It says starting version 219 on the screen.

I installed the package xinit. I ran sudo dpkg-reconfigure lightdm to select lightdm as the default window manager. Now I'm able to see the login screen for a second until the screen turns black. I switched back to sddm: I ran sudo dpkg-reconfigure sddm and selected sddm.

Then I booted into root console and performed do-release-upgrade. This did hang after a while. Then, I upgraded all packages with aptitude. After 2 or 3 reboots I can now login to KDE again.

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