On 25.01.2021 00:46, Michael Enright wrote:
On Sun, Jan 24, 2021 at 5:38 AM Marco Atzeri via Cygwin
<cygwin@cygwin.com> wrote:
Have you started the program from inside a XTerm with a running
XServer ?
I compiled and ran the program in a mintty window, while X server was
started and the environment variable DISPLAY was set. It ran
perfectly. I don't have XTerm installed, it would probably have taken
care of the DISPLAY variable.
I started a second mintty window and started the program from there
without setting DISPLAY, and the program complained "cannot connect to
X server".
I think Rafał started the program from a shell which had DISPLAY set,
but @Rafał if you could confirm that it would help a bit. I think some
Cygwin X components may be missing. The reason I think this is the
message that says the Windows DRI extension is missing, which I guess
is awfully specific.
It occurs to me that starting XTerm would be a useful diagnostic, but
if "Windows DRI" is missing, XServer probably can't start, never mind
"Windows DRI extension"
you are likely right, I will bet on "dri-drivers" not be
properly installed or having problems
$ cygcheck -cd |grep -i DRI
dri-drivers 19.1.6-1
libdbi-drivers 0.9.0-2
libxcb-dri2-devel 1.14-1
libxcb-dri2_0 1.14-1
as it should be pulled by libGL
$ cygcheck-dep -q -S -n dri-drivers
dri-drivers: is needed for ( libEGL1 libGL1 tigervnc-server
xorg-server-common )
Regards
Marco
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