Thread: How to solve the problem of ' X11 Screen does not exist'

I had a problem when I updated from OS 10.13 to OS 10.15 that may be relevant. 
I did not do a clean installation, so it kept soft links. that worked fine on
10.13, but on 10.15 that soft ink for /usr/X11 led to nowhere.  As I explain in
the attached document, /opt/X11 does exist and adding a new soft link solved the
problem I had running an old binary that used the old soft link.

On 12/18/20 2:47 PM, Luis Dominguez (via IRIS) wrote:

Hi,

I had exactly the same problem, although it may be cause by a different reason. This is how I solved it.

Sac was working perfectly until I decided to update my OS to Mac BigSur. Then, the message "X11 Screen does not exist" appeared every time I tried to plot. To solve it, I have to run Xquartz manually, before running any plot command.

I am not sure if there is a way to avoid this two-step process.

I recently upgraded to Mac OS 10.15. I did not do a clean installation, which I think explains my current problem: SAC 102.0 works but my old bimmary for 101.6a does not. When I tried to make it work, I get the following error message:

% newsac /usr/local/jas/sac-101.6a
dyld: Library not loaded: /usr/X11/lib/libSM.6.dylib
Referenced from: /usr/local/jas/sac-101.6a/bin/sac
Reason: image not found
Abort

I found [merhaba /usr]% ls -l
total 0
lrwxr-xr-x 1 root wheel 25 Nov 7 22:35 X11@ -> ../private/var/select/X11
lrwxr-xr-x 1 root wheel 25 Nov 7 22:35 X11R6@ -> ../private/var/select/X11
drwxr-xr-x 1014 root wheel 32448 Nov 8 07:26 bin/

[merhaba /usr]% cd X11
X11: No such file or directory

[merhaba /]% ls -l private/var/select/
total 0
lrwxr-xr-x 1 root wheel 9 Nov 7 22:36 sh@ -> /bin/bash
[merhaba /]%

So that X11 directly does not exist in Catalina. The soft link was carried over from my 10.13 system.

PROBLEM SOLVED

Before upgrading to 10.15 on my laptop, I had entered things to test SAC on my wife's iMac that was on 10.15 when we bought it. When I looked, I found that /private/var/select/X11 had a soft link to /opt/X11. On my macbook, I also have /opt/X11 with the same modification date. I did the following:

[merhaba select]% sudo ln -s /opt/X11 X11
[merhaba select]% ls X11
X11@
[merhaba select]% cd X11
[merhaba X11]% ls
bin/ include/ libexec/ var/
etc/ lib/ share/
[merhaba X11]%

Now,

[merhaba smooth]% cd 101.6a/
[merhaba 101.6a]% newsac /usr/local/jas/sac-101.6a
SEISMIC ANALYSIS CODE [09/17/2013 (Version 101.6a)]
Copyright 1995 Regents of the University of California

SAC>

My start-up file has the command

bd x

which fires up Xquartz and creates a graphics window.

Cliff Thurber

On Dec 18, 2020, at 1:51 PM, Luis Dominguez (via IRIS) <sac-help-bounce<at>lists.ds.iris.edu> wrote:

Hi,

I had exactly the same problem, although it may be cause by a different reason. This is how I solved it.

Sac was working perfectly until I decided to update my OS to Mac BigSur. Then, the message "X11 Screen does not exist" appeared every time I tried to plot. To solve it, I have to run Xquartz manually, before running any plot command.

I am not sure if there is a way to avoid this two-step process.

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