Hi Michael, Sorry, it took me some time to get back to you. I asked one of my colleagues to try it on her MAC. We installed emacs 27.2 on that MAC first and then tramp 2.5.1, verified that tramp 2.5.1 is loaded with M-x tramp-version and then we could easily reproduce the issue. I also suspect that it is related to tramp on MAC. I had been using emacs and tramp for a few years without trouble and I think the issues started last year. I don't remember if it was after I upgraded my MAC to the latest version at that time. What I noticed is that, occasionally, sometimes within an hour and sometimes after a couple of days, emacs crashes. I tried upgrading MAC OS, emacs, tramp and nothing helped. Then I tried to narrow it down so I could consistently reproduce it. Switching to the built-in 2.4.5.27.2 helped, i.e. reduced the frequency of crashes significantly and also I don't see the issue with the specific file that I could reproduce the issue with consistently. However, I still see emacs crashing occasionally. I am trying to run it in debugger and see if I can gather useful info. Thanks, Mani On Sat, Sep 4, 2021 at 12:06 AM Michael Albinus wrote: > Mani Kancherla writes: > > > Hi Michael, > > Hi Mani, > > > I followed the steps and could successfully compile using "M-x > > tramp-recompile-elpa" and restart emacs after that (without -L ~ > > /.emacs.d/elpa/tramp-2.5.1.1 -l tramp). I verified that it is running > > tramp version 2.5.1.1 with M-x tramp-version. > > Good. > > > I still see the problem with this. I open that specific problematic > > file and split the window, it hangs. > > Just to be sure, I reran your test, again. No problem. > > You said that you're on macOS, while I'm using GNU/Linux. Perhaps this > makes the difference, and we see an error of Emacs' thread > implementation on macOS. > > It would be helpful, if somebody else could run your test on macOS, > using the Tramp ELPA package, for verification. > > > Thanks, > > Mani > > Best regards, Michael. >