Fresh install of Karmic using the 195 driver also repeats the earlier symptom
of not being able to save the xorg.conf file. Running gksudo
/usr/bin/nvidia-settings lists a few lines that may help:
/etc/X11$ gksudo nvidia-settings
Traceback (most recent call last):
File "/usr/share/screen-resolution-extra/nvidia-polkit.py", line 75, in
<module>
operation_status = main(options)
File "/usr/share/screen-resolution-extra/nvidia-polkit.py", line 51, in main
exit_code = conf.backupAndWriteXorgConf([options.backup_filename,
options.filename])
File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 68, in __call__
return self._proxy_method(*args, **keywords)
File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 140, in __call__
**keywords)
File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 620, in
call_blocking
message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.UnknownMethod:
Traceback (most recent call last):
File "/usr/lib/pymodules/python2.6/dbus/service.py", line 649, in _message_cb
(candidate_method, parent_method) = _method_lookup(self, method_name,
interface_name)
File "/usr/lib/pymodules/python2.6/dbus/service.py", line 244, in
_method_lookup
raise UnknownMethodException('%s is not a valid method of interface %s' %
(method_name, dbus_interface))
UnknownMethodException: org.freedesktop.DBus.Error.UnknownMethod: Unknown
method: backupAndWriteXorgConf is not a valid method of interface
com.ubuntu.ScreenResolution.Mechanism
ERROR: Unable to open X config file '/etc/X11/xorg.conf' for writing.
--
When trying to save new X configuration, I get an error message: Failed to
parse existing x config file '/etc/X11/xorg.conf'
https://bugs.launchpad.net/bugs/477309
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