On 17.03.2013 02:53, Clive Standbridge wrote: >> The reasons seems to be my setup of the system. >> Debian runs in a VirtualBox environment, headless and w/o X server. >> I use ssh to connect to the system. (putty) >> I use X forwarding to run X applications on the system. >> The variable $DISPLAY gets set to 10.0.2.2:0 after ssh auth. > > I'm pretty sure that the value of DISPLAY means you are using a > traditional X connection, and not actually using the X forwarding over > ssh. ssh would set DISPLAY to "localhost:10" or similar.
That is so true! I have no idea why I have overlooked that fact. > You will need to remove any setting of DISPLAY from your shell's > startup files. Done. I guess at some point I wanted to be smart and expected that using a direct connection was quicker than X11Forwarding. mea culpa > Make sure your /etc/ssh/sshd_config contains a line: > X11Forwarding yes $ grep X11 /etc/ssh/sshd_config X11Forwarding yes X11DisplayOffset 10 > Then connect from Putty without X forwarding. DISPLAY should not be > set on the Debian machine. $ echo $DISPLAY|wc --words 0 > Then connect from Putty with X forwarding. DISPLAY should be > "localhost:10" or similar. $ echo $DISPLAY localhost:10.0 > I hope this helps. It actually does. Even if I keep X forwarding enabled and $DISPLAY set, su is a lot faster now, good enough for me - problem solved. Thank you very much for your help! :) I think the reason why it is faster is that $DISPLAY is localhost with dbus running. There is no Timeout in strace but only seemingly successfull calls to the FD of the dbus socket. Also if I do "/etc/init.d/dbus stop" su is even faster (read instant.) And interestingly virt-manager still works without dbus. (virt-manager is the package that also installed dbus) Sven. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/5145988d.2050...@web.de
