I ran into this very same problem, and started Googling. Saw that the
first time advised was to --purge and/ or --reinstall software-center. I
did that too, but it gave me no results. Tried deleting the
/home/<user_name>/.cache/software-center as suggested elsewhere. This
too had no result.
In the end however, I got software-center working again, due to the
remark of another user I read in one of the forums...
(S)he pointed out that, after attempting to start software-center in
Terminal, gave:
dbus.exceptions.DBusException:
org.freedesktop.DBus.Error.Spawn.ChildExited: Process /usr/lib/ubuntu-
sso-client/ubuntu-sso-login exited with status 1
The suggestion was to run in Terminal:
gothqueen@pussycomputer:~$ /usr/lib/ubuntu-sso-client/ubuntu-sso-login
This returned the traceback:
Traceback (most recent call last):
File "/usr/lib/ubuntu-sso-client/ubuntu-sso-login", line 67, in <module>
from ubuntu_sso.main import main
File
"/usr/lib/python2.7/dist-packages/ubuntu-sso-client/ubuntu_sso/main/__init__.py",
line 41, in <module>
from ubuntu_sso import utils
File
"/usr/lib/python2.7/dist-packages/ubuntu-sso-client/ubuntu_sso/utils/__init__.py",
line 46, in <module>
from ubuntu_sso.logger import setup_logging
File
"/usr/lib/python2.7/dist-packages/ubuntu-sso-client/ubuntu_sso/logger.py", line
61, in <module>
backupCount=5)
File "/usr/lib/python2.7/logging/handlers.py", line 117, in __init__
BaseRotatingHandler.__init__(self, filename, mode, encoding, delay)
File "/usr/lib/python2.7/logging/handlers.py", line 64, in __init__
logging.FileHandler.__init__(self, filename, mode, encoding, delay)
File "/usr/lib/python2.7/logging/__init__.py", line 903, in __init__
StreamHandler.__init__(self, self._open())
File "/usr/lib/python2.7/logging/__init__.py", line 928, in _open
stream = open(self.baseFilename, self.mode)
IOError: [Errno 13] Permission denied:
u'/home/gothqueen/.cache/sso/sso-client.log'
Hence, I looked at the "Permission denied" mentioned; it turned out that
the directory /home/gothqueen/.cache/sso/ and the files in it had root
permissions. Hence, software center couldn't open them (runs with user
permissions), hence permission denied, hence software-center does not
open/ start.
My quick solution:
Close software center if open (not likely).
Delete the directory ~/.cache/sso/ completely. Naturally, you'll need root
permission to do so.
Open software center.
The ~/.cache/sso/ directory will be created again automagically, but this time
with <user> permissions.
Fix done
(PS - Because this worked for me, I didn't try to change the permissions
of the original directory/ files.)
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https://bugs.launchpad.net/bugs/1298793
Title:
Software Center won't launch 14.04
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