I have tracked down where the bug actually occurs. This hang is caused
when VNC is being set up. The mythbuntu_install.py script that is part
of ubiquity calls a python module in mythbuntu-common.
The actual script called is /var/lib/python-
support/python2.6/mythbuntu_common/vnc.py
Line 56 of this file calls this command:
os.system(SCRIPTDIR + "/create_vnc_passwd " + password)
That launches a bash script which would look like this (let's say the
password was "pass&word"):
/usr/share/mythbuntu-common/scripts/create_vnc_passwd pass&word
At which point you should get an error because bash sees the "&" as
showing that another command is coming. This is where the installer
freezes and the ubiquity debug log shows:
May 4 20:24:30 debconf (filter): <-- GET mythbuntu/x11vnc
debconf (developer): <-- GET mythbuntu/x11vnc
debconf (developer): --> 1 true
May 4 20:24:31 debconf (filter): <-- SPAWN vncpasswd /root/.vnc/passwd
May 4 20:24:31 debconf (filter): ignoring unknown (multi-line?) command
May 4 20:24:31 debconf (filter): <-- PASSWORD:
May 4 20:24:31 debconf (filter): ignoring unknown (multi-line?) command
May 4 20:24:31 debconf (filter): <-- PASSWORD must be at least 6 characters -
try again
May 4 20:24:31 debconf (filter): ignoring unknown (multi-line?) command
May 4 20:24:31 debconf (filter): <-- PASSWORD:PROGRESS STOP
May 4 20:24:31 debconf (filter): ignoring unknown (multi-line?) command
The fix:
If the vnc.py script from mythbuntu-common passed this password
encapsulated in single quotes it should prevent this bug from occurring.
I'll do some testing. I know I can boot the live cd, make the change to
the file, and then do a test install. I am uncertain of how to test
this change when made to the mythbuntu-common source package (how do I
repackage the change into the liveCD for testing?)
--
Mythbuntu Install hangs at 90% due to & in password
https://bugs.launchpad.net/bugs/363153
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