![]() Manually setting the DISPLAY like so: export DISPLAY doesn't work either. So the problem is 100% due to Big Sur somehow. X11 forwarding requested but DISPLAY not set And in order for X11 forwarding to work, the DISPLAY variable must be set upon connection. I downgraded an old Mac from Big Sur back to Catalina, and then this error goes away without changing any settings. Not sure what the root cause is, if the DISPLAY variable is not properly set, or what it is. This should open an XQuartz window with the emacs text editor, but doesn't! Same thing happens with other applications. Once XQuartz launches, you can use X forwarding with SSH from the Terminal or from the xterm application in XQuartz. Mac X11 Forwarding For forwarding remote X sessions over ssh you can use either Terminal.app (also found in /Applications/Utilities ) or xterm. ![]() Now that you have logged in, check the DISPLAY variable to make. XQuartz is an open source version of the X11.app application that used to come preinstalled on macOS. I was getting the following error : cannot connect to X server :0 when trying to run docker container. For X forwarding to work, you'll need to start XQuartz before making an SSH connection to the remote system. Now connect to a remote server by using the -X option which will do X11 forwarding for SSH. Platform (on client): Mac OSX 10.14.3 (Mojave) Platform (on server): Scientific Linux release 6.9 (Carbon) What is the difference between and XWindow opened.But after upgrading to Big Sur I get the following error when I try to open a remote window: emacs test.txtĬonnect /tmp/.X11-unix/X0: No such file or directoryÄisplay mlogin105:35.0 unavailable, simulating -nw I have xQuartz 2.7.11 installed on Mac OS. Since ssh -X provides tighter security, it is. This worked perfectly on my three Macs (MBP 15" 2014, MBP 13" 2015 and MBP 13" 2020) before upgrading to Big Sur. You can forward X11 over an SSH connection by using either ssh -X or ssh -Y. I've got XQuartz installed and X11 forwarding is all configured in. ![]() from these remote machines on my local Mac. I often log into to remote machines which run some Linux distro (Cent OS the most common) and need to open application windows like Emacs etc. ![]()
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