Mark A. White wrote:
Stuart,
Are you logged-in as root or are you working in a root shell ( using su
or sudo)? Depending on your security settings X-windows may not permit a
program that is run from a root shell to access the display, which
belongs to the user logged-in through X-windows.
Another way around this (assuming you have ssh server running) is login
to a graphics desktop as yourself, then "ssh r...@localhost"
Depending how your SSH, SSHD are configured, you may have to ssh -X or
ssh -Y, but the X11 server will be available to the "remote" session
so you can run ccp4i (or nedit or xclock or whatever X application),
with copy and paste between the remote session window(s) and local, all
without having to violate the taboo of never starting X as root.
I get around the administrator access issue by installing CCP4, and all
other non-OS software, with non-root ownership, a non-root administrator
account, which shares the environment with all other users.
This is also great for setting up crystallography for a number of workstations-
install all the programs as a normal user on an nfs-mounted disk.
Now whoever mounts that disk can source your master setup file and run the
programs.
Rather than installing as root in the usual /usr/local/bin/ or wherever,
on every workstation. The actual system disks then just contain the
operating system, which you can reinstall in a few hours (or less from an image)
if they become corrupted or need to be updated to the latest distro.
Stuart Endo-Streeter wrote:
I was running from a root shell. Ubuntu does not let me login as root. That
is normally a good thing, but if I remember correctly to finish the ccp4i setup
last time I on a CentOS system I had to login as root. I will try to reinstall
tomorrow using sudo, but frankly I hate using it.
I don't think you need to reinstall- just open a terminal in your graphics
desktop,
ssh -X r...@localhost, verify that $DISPLAY is set and "xclock" works, then source
ccp4.setup and run ccp4i. (could be wrong about that, though)
Ed
