cygwin 3.6.2-1 under Win11 and win10: XWin.exe fails to start

Wed Jun 4 17:57:07 GMT 2025

Sorry about a new thread, but I just subscribed to this list.
Using 3.6.1-1 works fine. I am very sure this is based on the same issue that others have reported.
Here is what I see:
 [148118.718] (EE) Fatal server error:
 [148118.718] (EE) Linking lock file (/tmp/.X0-lock) in place failed: Permission denied
Which makes no sense, bash reports:
 Unknown+User@CPC-dslut-3Q3JN$ ls -ld /tmp
 drwxrwxrwt 1 Unknown+User Unknown+Group 0 Jun 4 09:16 /tmp
 Unknown+User@CPC-dslut-3Q3JN$ ls -l /tmp/.X0-lock
 ls: cannot access '/tmp/.X0-lock': No such file or directory
 Unknown+User@CPC-dslut-3Q3JN$ touch /tmp/.X0-lock
 Unknown+User@CPC-dslut-3Q3JN$ ls -l /tmp/.X0-lock
 -r--r--r-- 1 Unknown+User Unknown+Group 0 Jun 4 09:22 /tmp/.X0-lock
 Unknown+User@CPC-dslut-3Q3JN$ rm /tmp/.X0-lock
 rm: remove write-protected regular empty file '/tmp/.X0-lock'? y
 Unknown+User@CPC-dslut-3Q3JN$
Doing more testing shows that
 Unknown+User@CPC-dslut-3Q3JN$ cd /home/dslutz/cygwin-te st/
 Unknown+User@CPC-dslut-3Q3JN$ touch bad
 Unknown+User@CPC-dslut-3Q3JN$ ls -l
 total 0
 -r--r--r-- 1 Unknown+User Unknown+Group 0 Jun 4 13:47 bad
 -rw-rw-r-- 1 Unknown+User Unknown+Group 0 Jun 4 13:44 good
 Unknown+User@CPC-dslut-3Q3JN$ ls -ln
 total 0
 -r--r--r-- 1 4294967295 4294967295 0 Jun 4 13:47 bad
 -rw-rw-r-- 1 4294967295 4294967295 0 Jun 4 13:44 good
 Unknown+User@CPC-dslut-3Q3JN$
But I do see that the ACLs on the files are different and is most likely why XWin is failing.
mintty has the the issue reported in:
Robert Fensterman minnmass@gmail.com
Tue May 27 16:14:48 GMT 2025
cygin 3.6.2-1 under Win11 24H2: Cannot launch: no available terminals
https://cygwin.com/pipermail/cygwin/2025-May/258214.html
and
Roumen Petrov bugtrack@roumenpetrov.info
Sun Jun 1 08:02:12 GMT 2025
cygin 3.6.2-1 under Win11 24H2: Cannot launch: no available terminals
https://cygwin.com/pipermail/cygwin/2025-June/258234.html
and
Markus Hansmair markus+cygwin@zendro.de
Mon Jun 2 10:56:02 GMT 2025
cygwin 3.6.2.1 under Win11 23H2: UID and GID mapping changed
https://cygwin.com/pipermail/cygwin/2025-June/258245.html
The e-mail:
Johannes Schindelin Johannes.Schindelin@gmx.de
Mon Jun 2 21:34:47 GMT 2025
cygin 3.6.2-1 under Win11 24H2: Cannot launch: no available terminals
https://cygwin.com/pipermail/cygwin/2025-June/258250.html
looks like the key in that I get for "getent passwd $(id -u)":
 NASUNI+dslutz:*:4096:4096:U-NASUNI\dslutz,S-1-12-1-3596282818-1216142758-3954360507-2609862755:/home/dslutz:/bin/bash
I also have some the same issues with UID, GID like
Markus Hansmair markus+cygwin@zendro.de
Mon Jun 2 10:56:02 GMT 2025
cygwin 3.6.2.1 under Win11 23H2: UID and GID mapping changed
https://cygwin.com/pipermail/cygwin/2025-June/258245.html
reports. But I do not see the bad UID, GID on files that Markus sees.
I can run any tests in a short amount of time.
Hope this helps.
 -Don Slutz
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