Installation crash in a11y mode when using screen reader

[Fabio Marconi]

Hello
Testing a11y installation, for two times, the installer crash at the same point, ever when inserting the name of the pc.
Thanks
Fabio

From syslog
Feb 25 19:57:20 ubuntu kernel: [ 735.814705] ubiquity[14981] trap int3 ip:7fdcaaa9413b sp:7fffb46e8f00 error:0
Feb 25 19:57:25 ubuntu install.py: Exception during installation:
Feb 25 19:57:25 ubuntu install.py: Traceback (most recent call last):
Feb 25 19:57:25 ubuntu install.py: File "/usr/share/ubiquity/install.py", line 679, in <module>
Feb 25 19:57:25 ubuntu install.py: install.run()
Feb 25 19:57:25 ubuntu install.py: File "/usr/share/ubiquity/install.py", line 129, in run
Feb 25 19:57:25 ubuntu install.py: self.copy_all()
Feb 25 19:57:25 ubuntu install.py: File "/usr/share/ubiquity/install.py", line 455, in copy_all
Feb 25 19:57:25 ubuntu install.py: self.db.progress('SET', 10 + copy_progress)
Feb 25 19:57:25 ubuntu install.py: File "/usr/lib/python2.7/dist-packages/debconf.py", line 60, in <lambda>
Feb 25 19:57:25 ubuntu install.py: lambda *args, **kw: self.command(command, *args, **kw))
Feb 25 19:57:25 ubuntu install.py: File "/usr/lib/python2.7/dist-packages/debconf.py", line 65, in command
Feb 25 19:57:25 ubuntu install.py: self.write.flush()
Feb 25 19:57:25 ubuntu install.py: IOError: [Errno 32] Broken pipe

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubiquity 2.9.21
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.93-0ubuntu2
Architecture: amd64
CasperVersion: 1.304
Date: Sat Feb 25 21:28:16 2012
InstallCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120225)
ProcEnviron:
 TERM=linux
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
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/941094

[Brian Murray (brian-murray)]

Which a11y installation method were you testing? The screen reader, braille, something else?

[Fabio Marconi (fabiomarconi)]

I was testing the screenreader as suggested by the testcase uai-001
http://testcases.qa.ubuntu.com/Install/DesktopAccessibility
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[Stéphane Graber (stgraber)]

Can you still reproduce this with a recent daily?

The segfault looks like a gtk issue or yet another case where something tries to access a widget we destroyed when switching step in the installer, as it's happening for you when entering the name of the PC, I'd suspect it to be related to the hostname resolving timeout in ubi-usersetup.
Some work happened in that area for beta2 (fixing a similar bug with preseeded installs), so it'd be useful to have this tested again.

[Fabio Marconi (fabiomarconi)]

Just tested yesterday's build in the same hardware and it is no more present.
thanks
fabio
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