kubuntu-Xenial ubiquity crashes directly live session

[ruben]

I downloaded the latest current version (daily 24-02-2016). I saw in older versions has been fixed, but in this one appear error. Calling ubiquity after live session started, worked and installed correctly, but in the first boot didnt apper ubiquity and display directly the loggin session.

The X11 connection broke: I/O error (code 1)
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
      after 874 requests (864 known processed) with 0 events remaining.
The X11 connection broke (error 1). Did the X11 server die?
ubiquity-dm: greeter exited with code 1
ubiquity-dm: Failed with an exception:
ubiquity-dm: Traceback (most recent call last):
  File "/usr/bin/ubiquity-dm", line 783, in main
    ret = run(vt, display, username)
  File "/usr/bin/ubiquity-dm", line 758, in run
    ret = dm.run(*sys.argv[4:])
  File "/usr/bin/ubiquity-dm", line 647, in run
    db = DebconfCommunicator('ubiquity', cloexec=True)
  File "/usr/lib/ubiquity/ubiquity/debconfcommunicator.py", line 37, in __init__
    write=self.dccomm.stdin)
  File "/usr/lib/python3/dist-packages/debconf.py", line 50, in __init__
    self.setUp(title)
  File "/usr/lib/python3/dist-packages/debconf.py", line 53, in setUp
    self.version = self.version(2)
  File "/usr/lib/python3/dist-packages/debconf.py", line 62, in <lambda>
    lambda *args, **kw: self.command(command, *args, **kw))
  File "/usr/lib/python3/dist-packages/debconf.py", line 83, in command
    status = int(status)
ValueError: invalid literal for int() with base 10: ''

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.46 [modified: usr/lib/ubiquity/user-setup/user-setup-apply usr/share/ubiquity/apt-setup]
ProcVersionSignature: Ubuntu 4.4.0-7.22-generic 4.4.2
Uname: Linux 4.4.0-7-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CasperVersion: 1.367
Date: Thu Feb 25 02:44:14 2016
InstallCmdLine: file=/cdrom/preseed/custom.seed boot=casper maybe-ubiquity initrd=/casper/initrd.gz quiet splash --- maybe-ubiquity
LiveMediaBuild: Custom 16.04 - Release amd64
SourcePackage: ubiquity
UbiquityDebug:
 Ubiquity 2.21.46
 TEXT <small>If more than one person will use this computer, you can set up multiple accounts after installation.</small>
 TEXT <small>Enter the same password twice, so that it can be checked for typing errors.</small>
 TEXT <small>The name it uses when it talks to other computers.</small>
 : Fatal IO error: client killed
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1549564

[Simon Quigley (tsimonq2)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. There have been many changes in Ubuntu since that time you reported the bug and your problem may have been fixed with some of the updates. It would help us a lot if you could test it on a currently supported Ubuntu version. If you test it and it is still an issue, kindly upload the updated logs by running only once:
apport-collect 1549564

and any other logs that are relevant for this particular issue.

[Launchpad Janitor (janitor)]

[Expired for ubiquity (Ubuntu) because there has been no activity for 60 days.]