Unfortunately, I cannot debug this way. The error is that no files
are created by normal users, so I cannot use files for logging. Also
there is no console because this is the /etcX11/Xclients script, e.g.
it is executed by gdm after logging in to X window system through
xdmpc. Well, I might setup an xml rpc server for logging, but hey, if
I cannot write into a wicked file then I should not start with
complex protocols and networking.
Humour me. Try opening a fixed filename in a location which you
double-check is world-writeable. E.g. /tmp/FOO and print all your
relevant variables there. If it works as gandalf, then delete that
trace file and try as a non-working user.
If that fails, then try opening the file in the home directory of the
user who you are testing as.
I tried this before I wrote to this list. It does not work. No 'normal'
users can create these files from /etc/X11/Xclients. But after gnome
starts up, they can create these files. If I login with a normal user
and I try to re-run /etc/X11/Xclients then the files gets created, and
finally I get an error message telling that gnome is already running.
If that fails then you can try logging them with syslog.
How can I do that from Python? :-) I tried this:
from syslog import *
syslog(|LOG_INFO | LOG_USER, 'test')
No exception raised but I found nothing under /var/log.|
Are you sure that if say the file() fails, that a window manager won't
start anyway? You can test that by making the filename something
clearly non-existent.
To your request, I changed the ddir variable to '/nonexistent', and
gnome was started! So you found the problem! Thanks! :-)
It was that gdm started /usr/local/etc/gdm/Xsession. That script started
/etc/X11/Xclients but ONLY for user gandalf. It is because I selected
'use system default session' in gdm before logging in. It was months
ago, and I forgot it. Other users were using the default gnome session,
e.g. they were NOT executing the Xclients script.
Thank you again!
Laszlo
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