[mcguire]

"Looks like some serious effort. To put things in context, I can't do remote X to a modern machine as in

    "$ DISPLAY=desktop:0 xterm&

"This gives a protocol error."

Ok, I'm impressed. That's the first time I've seen that.

[kristopolous]

I believe it's relatively recent. I've heard second-hand from better men than me that they are dropping a lot of legacy things. As far as I can tell, the HP is running X11R5. It doesn't do -version, the man page is for R5 and the binary is dated "Oct 27 1997" ... so yeah, 20 years ago. It's honestly a reasonable thing to break.

[mcguire]

X11R5 is older than I am (and I'm old). Wow.

That would explain it.