On 8/21/2021 10:49 AM, Jon Turney wrote:
On 10/08/2021 13:58, Roland Roberts wrote:
I have a new, company-supplied Windows 10 laptop, using Cygwin to do
development. I’m having a problem getting XWin to launch apps. XWin
appears to be mostly working normally, meaning if I launch a Cygwin
mintty instance, I can manually set DISPLAY=:0.0 and start up X
application from the shell prompt. But trying to launch from my
.XWinrc, the application never displays and I can’t find a useful
error log to track down the issue. I’m pretty sure it’s some
permission someplace my account doesn’t have (and I can probably get
IT to change that if I can just identify what it is).
I'm not sure what the evidence for this hypothesis is?
You're right, it was a complete guess since that's been where most of my
problems have been with the new machine.
[...]
The process being created, but not changing command is usually
symptomatic of problems with cygwin's fork emulation (i.e. the child
process gets stuck during the complex synchronization it does with the
parent, before exec gets called)
Any suggestions on where to poke to diagnose this? My home Windows 10
machine has no problem at all. Oh, and cygcheck report version 3.1.4.
Yes, that’s a little old, but we are stuck there until we can work
out an issue with our build environment and the change for 3.1.5+ in
how symlinks are handled.
There are some suggestions about dealing with fork problems in the
FAQ, but sometimes nothing works and we don't know why.
Thanks, I'll look through those suggestions. I'm still trying to figure
out what the key difference in my two environments is that on Windows 10
machine works fine for this and the other doesn't. And the one where it
doesn't, it only doesn't work when launched from the XWinrc menu, it
works fine when launched from mintty.
roland
--
Roland Roberts, PhD
Brooklyn, NY USA
https://astrofoto.org
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