X11 app - unable to open display ""

[Chris Jones]

Hi,

Your problem is

export DISPLAY=:0
xhost +

don't do this.

Just run gv, and allow your X11 server to automatically tart, which it 
should, if it is correctly configured.

Chris

On 17/04/2019 10:06 am, Christoph Kukulies wrote:
> I installed the „gv“ port (ghostview). Worked.  I can give gv on the 
> command line (shell prompt).
> But I’m getting:
> 
> Christophs-MBP:~ kuku$ export DISPLAY=:0
> Christophs-MBP:~ kuku$ xhost +
> xhost:  unable to open display ":0"
> Christophs-MBP:~ kuku$ gv
> gv: Unable to open the display.
> Christophs-MBP:~ kuku$
> 
> I thought, X11 apps can run against the macOS desktop server, can’t they?
> Or do I have to run an extra X11-server?
> 
> —
> Christoph
> 
>