Attempting to run XMing, the remote host is Ubuntu, going through Putty. Have spent hours carefully double-checking all settings, reviewing XMing's troubleshooting guide, etc. Rather than continuing this path, I want to use a tracing tool or
sshd logging to somehow identify exactly why I'm getting the "can't open display" error. This occurs when I test by running
xclock or firefox.
I've turned off firewalls on each computer.
One thing that bothers me: in Putty I'm setting the X display location to
localhost:0, which they say sets the
DISPLAY variable on the remote host. But after logging in through Putty, I do an
echo $DISPLAY and it shows nothing. Shouldn't it return
What tools or logs or other approach could I use to figure out what's wrong?