installer crashed when do <back> and <forward> many times.

[BlueT - Matthew Lien - 練喆明]

Traceback (most recent call last):
  File "/usr/bin/ubiquity", line 132, in ?
    install()
  File "/usr/bin/ubiquity", line 55, in install
    ret = wizard.run()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 266, in run
    self.process_step()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 738, in process_step
    self.gparted_to_mountpoints()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 815, in gparted_to_mountpoints
    print >>self.gparted_subp.stdin, "apply"
AttributeError: 'NoneType' object has no attribute 'stdin'

----

/var/log/installer/syslog:

Warning: Unable to open /dev/hda read-write (Read-only file system). /dev/hda has been opened read-only.
Error: Unable to open /dev/hda - unrecognised disk label.
Mon, 17 Jul 2006 05:03:14 INFO Step_before = stepPartAdvanced
Mon, 17 Jul 2006 05:03:14 INFO Step_after = stepPartAdvanced
Mon, 17 Jul 2006 05:04:05 INFO Step_before = stepPartAdvanced
Exception in GTK frontend (invoking crash handler):
Traceback (most recent call last):
  File "/usr/bin/ubiquity", line 132, in ?
    install()
  File "/usr/bin/ubiquity", line 55, in install
    ret = wizard.run()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 266, in run
    self.process_step()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 738, in process_step
    self.gparted_to_mountpoints()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 815, in gparted_to_mountpoints
    print >>self.gparted_subp.stdin, "apply"
AttributeError: 'NoneType' object has no attribute 'stdin'

----

/var/log/syslog:
Jul 17 05:04:34 nubuntu gconfd (nubuntu-12602): Failed to load source "xml:readwrite:/home/nubuntu/.gconf": Couldn't resolve address for configuration source: Can't read from or write to the XML root directory in the address "xml:readwrite:/home/nubuntu/.gconf"
Jul 17 05:04:34 nubuntu gconfd (nubuntu-12602): Resolved address "xml:readonly:/etc/gconf/gconf.xml.mandatory" to a read-only configuration source at position 0
Jul 17 05:04:34 nubuntu gconfd (nubuntu-12602): Resolved address "xml:readonly:/etc/gconf/gconf.xml.defaults" to a read-only configuration source at position 1
Jul 17 05:04:34 nubuntu gconfd (nubuntu-12602): Resolved address "xml:readonly:/var/lib/gconf/debian.defaults" to a read-only configuration source at position 2
Jul 17 05:04:34 nubuntu gconfd (nubuntu-12602): Resolved address "xml:readonly:/var/lib/gconf/defaults" to a read-only configuration source at position 3
Jul 17 05:04:34 nubuntu gconfd (nubuntu-12602): None of the resolved addresses are writable; saving configuration settings will not be possible
Jul 17 05:04:34 nubuntu gconfd (nubuntu-12602): No writable config sources successfully resolved, may not be able to save some configuration changes

----

/var/log/partman:
parted_server: Closing infifo and outfifo
parted_server: main_loop: iteration 25
parted_server: Opening infifo
/lib/partman/automatically_partition/80custom/choices: *******************************************************
IN: PARTITIONS =dev=sda
parted_server: Read command: PARTITIONS
parted_server: command_partitions()
parted_server: Opening outfifo
parted_server: OUT: OK

parted_server: OUT: 1 32256-106928639 106896384 primary unknown /dev/sda1

parted_server: OUT: 3 106928640-10594160639 10487232000 primary unknown /dev/sda3

parted_server: OUT: 4 10594160640-17388241919 6794081280 primary unknown /dev/sda4

parted_server: OUT: 6 17388306432-69816176639 52427870208 logical unknown /dev/sda6

parted_server: OUT: 5 69816208896-72793727999 2977519104 logical linux-swap /dev/sda5

parted_server: Partitions printed
parted_server: OUT:

parted_server: Closing infifo and outfifo
parted_server: main_loop: iteration 26
parted_server: Opening infifo
/bin/partman: IN: QUIT
parted_server: Read command: QUIT
parted_server: Quitting

[Colin Watson (cjwatson)]

Thanks for your report. This appears to be the same as bug 48856.