Comment 9 for bug 1053910

(In reply to comment #0)
> Basically I've huge problems with dbus.
> My main problem is that different binaries like kdialog and plasma-desktop are
> freezing and crashing all the time, so I can't use my Linux (Ubuntu) desktop
> properly.

Please report this to your distribution (Ubuntu).

> When starting dbus-daemon manually, I've the following error:
>
> $ /bin/dbus-daemon --print-pid 5 --print-address 7 --session
> Failed to start message bus: Writing to pipe: Bad file descriptor

File descriptors 5 and 7 are not open, so that error message is to be expected.

Running the session dbus-daemon is part of X session startup; you can't (usefully) attach a new dbus-daemon to a running session.

> Running with sudo doesn't help either.

No, it won't.

(In reply to comment #0)
> Last <number> show the time spent in system calls.
> poll() = 25 seconds
> I've 4 of these in one run:
> 8549 poll([{fd=7, events=POLLIN}], 1, 25000) = 0 (Timeout) <25.020763>
> 8549 poll([{fd=7, events=POLLIN}], 1, 25000) = 0 (Timeout) <25.008094>
> 8549 poll([{fd=7, events=POLLIN}], 1, 25000) = 0 (Timeout) <25.025128>
> 8549 poll([{fd=7, events=POLLIN}], 1, 25000) = 0 (Timeout) <25.025123>

The default timeout for a D-Bus method call is 25 seconds, so this means your process (kdialog?) is sending a method call and not receiving a reply from the service it's communicating with. After 25 seconds, it gives up.