> Am 23.04.2018 um 15:21 schrieb Andreas Höschler <ahoe...@smartsoft.de>:
> 
> 
>> It is easy to inspect these numbers as GNUstep stores them on the root
>> window as properties.
>>  xprop -root _GNUSTEP_FRAME_OFFSETS
> 
> I typed this command in the shell I use to start the app directly after a 
> reboot of the machine. It said
> 
> _GNUSTEP_FRAME_OFFESTS: no such atom on any window

This is to be expected, as GNUstep needs to fill these values first.

> I then started the app for the first time after a reboot and reexecuted the 
> above command. It then said
> 
> _GNUSTEP_FRAME_OFFSETS(CARDINAL) = 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

That looks bad. Most likely GNUstep couldn’t figure out any of these values 
which again would explain your problem.


>> Every group of four values belongs to a window style. If you see zeros
>> or negative values here this might point to invalid numbers. In that
>> case you should remove these values with the following command:
>> xprop -root _GNUSTEP_FRAME_OFFSETS
> 
> That's the exact same command as above? Is this correct

No, I forgot to add „-remove“ in the middle of the command. But the result that 
you have above are enough for now.
Could you please either restart your computer again or execute this remove 
command
xprop -root -remove _GNUSTEP_FRAME_OFFSETS

And then start you application with the parameter "—GNU-Debug=Offset“ and mail 
back the output. Newer versions of GNUstep would have a bit more diagnostic 
here, but I hope the old version will print something as well.

Fred



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