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Last night I attempted to upgrade from 15.04 to 15.10. Everything went fine until the installer got to the Installing the upgrades step, where it hangs (stops progress) at Installed libxfce4ui-1-0 (i386). The terminal pops up, the last line of which is Found memtest86+ image: /boot/memtest86+.bin. I also have ~50% iowait on my processor, so I let it sit overnight to see if it could figure out what it needs to do. No change. I also don't see anything obvious going on background-wise.

Here's something from /var/log/dist-upgrade/main.log: 2015-10-23 08:23:50,551 WARNING no activity on terminal for 300 seconds (Installed libxfce4ui-1-0 (i386))

Here's everything from /var/log/dist-upgrade/apt-term.log:

Found initrd image: /boot/initrd.img-3.19.0-26-generic
Found linux image: /boot/vmlinuz-3.19.0-25-generic
Found initrd image: /boot/initrd.img-3.19.0-25-generic
Found linux image: /boot/vmlinuz-3.19.0-15-generic
Found initrd image: /boot/initrd.img-3.19.0-15-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin

Those are all the clues I know how to gather at this point. Any help will be appreciated.

The strange thing is that I didn't even know I had XFCE installed since I always use Unity. Is there a way to tell the installer to skip this step without aborting the installation and as a consequence completely breaking my installation? Thank you in advance.

Update

According to Upgrade hangs on ttf-mscorefonts-installer, the command ps -ejHf can be used to gather some more clues as to what might be wrong. For instance, ps -ejHf | grep wily returns:

root      5417  4359  2602  2602  0 Oct22 ?        00:04:22           /usr/bin/python3 /tmp/ubuntu-release-upgrader-e76uh732/wily --mode=server --frontend=DistUpgradeViewGtk3
root     26681  5417 26681 26681  1 Oct22 pts/1    00:11:28             /usr/bin/python3 /tmp/ubuntu-release-upgrader-e76uh732/wily --mode=server --frontend=DistUpgradeViewGtk3

That's not terribly useful, but at least it's something.

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Joel DeWitt
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  • Remove the package sudo apt-get purge libxfce4ui-1-0 and try to start the upgrade again sudo do-release-upgrade – A.B. Oct 23 '15 at 12:42
  • @A.B., I wasn't able to finish the upgrade, but I have a functioning system without XFCE installed in case that ever becomes a problem again. I had to do sudo dpkg --configure -a in a terminal before sudo apt-get purge libxfce4ui-1-0, just so you know. Ubuntu says it's 15.10 even though I didn't finish all the steps for upgrading. Could you please post your suggestions as an answer to this question so that I can give you some street cred? – Joel DeWitt Oct 24 '15 at 23:21
  • Ok, done. And please, check the last step in my answer. – A.B. Oct 25 '15 at 15:01

1 Answers1

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As you said in your comments, this was the solution for you:

sudo dpkg --configure -a
sudo apt-get purge libxfce4ui-1-0
sudo do-release-upgrade

If your system says, it's 15.10, everything is ok.
But you should check /etc/apt/sources.list for vivid entries and replace them with wily. After that execute:

sudo apt-get update
sudo apt-get dist-upgrade
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