$display not set

[WanMMao]

General information:

• OS name: Debian GNU/Linux
• OS version: sid
• OS architecture: 64 bits
• Resolutions:
  • Monitor 1: 1920x1080
• Python version: _3.8.0
• MSS version: 9.0.1

info:
I will start the Python script in rc. local
this code is as follows：

error info is $display not set
May I ask what the reason is

Please help me check what the reason is

[BoboTiG]

It seems similar to #263 but with rc.local. I do not have the exact answer, but you should be able to find in on internet.
I will be happy to know the answer too :)

[WanMMao]

rc.local

If I don't start in rc.local, the code is normal, and this issue only occurs when I start in rc.local. I am confused

[WanMMao]

os.environ['DISPLAY']=':0'
os.environ['Xauthority']='/home/username/.Xauthority'

use the code

I solved the problem