On 2020-03-03 10:21, Henry S. Thompson wrote: > Takashi Yano writes: > >> On Tue, 03 Mar 2020 12:40:17 +0000 >> "Henry S. Thompson" wrote: >>> Takashi Yano writes: >>>> This bug was already fixed in current git head. >>> >>> Current git head for Cygwin? Or mintty? >> >> I mean cygwin. > > OK, this is now getting very weird. As at least one other person > reported, the problem is intermittent, with both my systems, both on > 3.1.4 Cygwin and 3.1.4 mintty. > > Two further shots in the dark: > > 1) I tried to run cygcheck -s while there was an XWin + sh hang, as > previously reported. It hung also. Process Explorer shows > > bash.exe > bash.exe > cygcheck.exe > id.exe > > I can use strace to attach to it, and it is indeed > [cygdir]\bin\id.exe, showing lots of dll loads, then a thread being > created and exiting happily, last two lines are > > thread nnn created > _cygtls::remove: wait 0 > > Mystery > > So, try connecting strace to the hung sh process... > > [Nothing :-[ > > Connecting to it with gdb shows various threads, but ^C doesn't > achieve anything. > > 2) There are some hints that cygrunsrv/cygserver might be implicated. > Two cygchecks on one of my machines (which did run to completion) > differ in that the one taken while XWin had started successfully > differed from the other in that all my Cygwin services (cron, > cygserver, sshd, and exim) were stopped, > In the other, a case of XWin hang, they were all running. > > On my other system after several fails in a row, I stopped all my > services and XWin launched successfully. > > Grasping at straws here, but I have one machine sitting in a hung state, > and other debugging ideas welcome...
XWin startup takes different paths depending on whether you have sshd running or not. I also have cygserver defined with max supported threads, as I have cron jobs which need them. I can often get multiwindow X to launch from mintty with sshd disabled, after deleting: $ llgo -AR /tmp/.X* /tmp/dbus-* /tmp/fam-$USER/fam- -r--r--r-- 1 11 Mar 2 00:20 /tmp/.X0-lock srwxrwxrwx 1 0 Mar 2 14:27 /tmp/dbus-5P1mCxSjEA= srwxrwxrwx 1 0 Mar 2 00:20 /tmp/dbus-JEIRS3qks6= srwxrwxrwx 1 0 Mar 2 12:34 /tmp/dbus-K5HWAHFshg= srwxrwxrwx 1 0 Mar 3 10:34 /tmp/dbus-pvf4OTaHDu= srwxrwxrwx 1 0 Mar 2 08:47 /tmp/dbus-QdAWXiPC8F= srwxrwxrwx 1 0 Mar 2 14:01 /tmp/dbus-TFjEzRHU4c= srwxrwxrwx 1 0 Mar 2 14:26 /tmp/dbus-VsXRfGI5GT= srwxrwxrwx 1 0 Mar 2 12:37 /tmp/dbus-Zo1S6Q5MSG= srw------- 1 0 Mar 2 00:20 /tmp/fam-$USER/fam-= /tmp/.X11-unix: total 1.0K srw-rw-rw- 1 0 Mar 2 00:20 X0= -rw------- 1 0 Mar 2 00:20 X0.lock -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
