Examples don't work on my laptop #10
Description
Every example I try to run (except for mouse.cr) don't show anything. after a second or two the program terminates. no error is showing. echo $? return 0 so there is no error.
About my laptop:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.6 LTS
Release: 16.04
Codename: xenial
$ uname -a
Linux oren 4.4.0-171-generic #200-Ubuntu SMP Tue Dec 3 11:04:55 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux