Newbie: 1st LinuxCNC install, crashes when I run it

It is my 1st install of LinuxCNC. I just downloaded it and installed fresh. Pretty clueless what to do, so..
I ran LinuxCNC config picker, selected something like stepper sim_inch.
Got some black screen, which looks like crash dump. After reboot I found it in syslog.
Help?!
Thanks for your help in advance

Can you please attach the linuxcnc error log? Look under "debug info" for errors.

Where do I find "linuxcnc error log"?

When you start Linuxcnc, if there is an error it will show a screen with informations about what went wrong. Thers you have a button to copy it to clipboard.
Or you can start Linuxcnc from the terminal and see what is going on.

There was no button, just black text screen. I got a picture of it. Could not do much more

That looks like a computer problem. Did you check the downloaded image with md5sum?
I would advice to check the image and do a new install, or even beter make a bootable usb with that image and start it from usb so you can test it.
That might just work.