ubiquity crashed with GLib.GError in customize_installer(): vte-pty-error: grantpt failed: Operation not permitted (1)

[Dave Morley]

STEPS:
The current iso is horribly out of date, so using pending to test with
1. Grab the latest daily image from http://cdimages.ubuntu.com/daily-live/pending/
2. Select oem install from the uefi menu
3. Ubiquity bails out immediately

EXPECTED:
A stand oem install

ACTUAL:
deposited into desktop.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.50
ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
Uname: Linux 4.4.0-15-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CasperVersion: 1.367
CurrentDesktop: Unity
Date: Tue Mar 22 11:56:22 2016
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash oem-config/enable=true ---
LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160322)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Jean-Baptiste Lallement (jibel)]

From syslog

Mar 22 11:49:13 ubuntu ubiquity[1614]: log-output -t ubiquity apt-install oem-config-gtk oem-config-slideshow-ubuntu
Mar 22 11:49:14 ubuntu ubiquity[1614]: Exception in GTK frontend (invoking crash handler):
Mar 22 11:49:14 ubuntu ubiquity[1614]: Traceback (most recent call last):
Mar 22 11:49:14 ubuntu ubiquity[1614]: File "/usr/lib/ubiquity/bin/ubiquity", line 649, in <module>
Mar 22 11:49:14 ubuntu ubiquity[1614]: main(oem_config)
Mar 22 11:49:14 ubuntu ubiquity[1614]: File "/usr/lib/ubiquity/bin/ubiquity", line 635, in main
Mar 22 11:49:14 ubuntu ubiquity[1614]: install(query=options.query)
Mar 22 11:49:14 ubuntu ubiquity[1614]: File "/usr/lib/ubiquity/bin/ubiquity", line 264, in install
Mar 22 11:49:14 ubuntu ubiquity[1614]: wizard = ui.Wizard(distro)
Mar 22 11:49:14 ubuntu ubiquity[1614]: File "/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py", line 348, in __init__
Mar 22 11:49:14 ubuntu ubiquity[1614]: self.customize_installer()
Mar 22 11:49:14 ubuntu ubiquity[1614]: File "/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py", line 912, in customize_installer
Mar 22 11:49:14 ubuntu ubiquity[1614]: self.vte.spawn_sync(0, None, tail_cmd, None, 0, None, None, None)
Mar 22 11:49:14 ubuntu ubiquity[1614]: GLib.GError: vte-pty-error: grantpt failed: Operation not permitted (1)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Iain Lane (laney)]

I downgraded libc6 and libc6-bin to 2.21-0ubuntu6 and this stopped happening. I had to dpkg --force --remove 'locales' too, to be able to downgrade libc6-bin.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[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/1560459

[Iain Lane (laney)]

BTW if you start ubiquity as root (sudo) with new glibc then it works.

[Adam Conrad (adconrad)]

ubiquity (2.21.51) xenial; urgency=medium

  * ubiquity/frontend/gtk_ui.py: Drop and restore privs around calling vte.

 -- Adam Conrad <email address hidden> Tue, 22 Mar 2016 16:35:21 -0600