ubuntu18.04调节屏幕亮度和/typora.io/linux报错

一.屏幕调节
ubuntu18.04,想调节屏幕亮度保护视力,搜了一番几个都不能用,后来就搜外网,试了一个可行的,做此记录!
原文网址
An alternative method is to install a PPA and brightness APP which also adjusts gamma - AWESOME!, and … for any individual screen TOO!
Here are the 3 simple steps:

$ sudo add-apt-repository ppa:apandada1/brightness-controller
$ sudo apt update
$ sudo apt install brightness-controller

Then find it …
Brightness Controller
in your App’s/Accessories

二.Conflicting distribution: https://typora.io ./linux/ InRelease (expected ./linux/ but got )
解决不了,屏蔽之!
原文地址
The warning can be silenced by using deb https://typora.io/linux ./ in /etc/apt/sources.list.