Hello,

with my new laptop the kore taget give me this error:
./101_shaderPlaygroundUI
Initializing Haxe libraries
Starting Kore
X Error of failed request: GLXBadFBConfig
Major opcode of failed request: 151 (GLX)
Minor opcode of failed request: 34 ()
Serial number of failed request: 23
Current serial number in output stream: 23

I can copy the build to my old Laptop and everything runs fine.
The html5 target has no problem.
I get the same error when i use kore without kha.

My new laptop has a dedicated graphics card, and after hours of installation i get a working hardware and X configuration.
uname -a
Linux zenbook 4.19.0-1-amd64 #1 SMP Debian 4.19.12-1 (2018-12-22) x86_64 GNU/Linux

Maybe I have not yet configured my system correctly, I'll ask first here because other opengl applications work properly.
If necessary, I like to send more information about my system.

Aha. We had one other guy having a problem like that but I can't reproduce it. But he is running on integrated graphics, are you sure your installation uses your dedicated graphics?

No i think my dedicated graphics does nothing.
glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) HD Graphics (Whiskey Lake 3x8 GT2)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 18.2.7
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 18.2.7
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 18.2.7
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:

or:
inxi -G -C -S
System: Host: zenbook Kernel: 4.19.0-1-amd64 x86_64 bits: 64 Desktop: Gnome 3.30.1
Distro: Debian GNU/Linux buster/sid
CPU: Topology: Quad Core model: Intel Core i7-8565U bits: 64 type: MT MCP L2 cache: 8192 KiB
Speed: 700 MHz min/max: 400/4600 MHz Core speeds (MHz): 1: 745 2: 744 3: 795 4: 705 5: 766
6: 798 7: 791 8: 748
Graphics: Device-1: Intel driver: i915 v: kernel
Device-2: NVIDIA GP107M [GeForce GTX 1050 Mobile] driver: nouveau v: kernel
Display: wayland server: X.Org 1.20.3 driver: nouveau resolution: 1920x1080~60Hz
OpenGL: renderer: Mesa DRI Intel HD Graphics (Whiskey Lake 3x8 GT2) v: 4.5 Mesa 18.2.7

sorry i mean, copy the executable to my old Laptop and it works:)

ok, so it's intel graphics after all. It seems to be something about the init code at https://github.com/Kode/Kore/blob/master/Backends/System/Linux/Sources/Kore/System.cpp#L108 that intel doesn't like but I don't know what it is.