Hi @concrete, and welcome!
Regarding #1, look at TLP, from the community repository:
$ pamac search tlp
[...]
tlpui [Installed] 1.5.0.7-1 community
A GTK user interface for TLP written in Python
[...]
tlp [Installed] 1.5.0-6 community
Linux Advanced Power Management
…and it also has a GUI, which obviously needs the usual one, so install it with:
pamac install tlpui tlp
Regarding #2:
Might be a missing driver. Please provide the output of:
inxi --admin --verbosity=7 --filter --no-host --width
Tip:
When posting terminal output, copy the output and paste it here, wrapped in three (3) backticks, before AND after the pasted text. Like this:
```
pasted text
```
Or three (3) tilde signs, like this:
~~~
pasted text
~~~
This will just cause it to be rendered like this:
Sed
sollicitudin dolor
eget nisl elit id
condimentum
arcu erat varius
cursus sem quis eros.
Instead of like this:
Sed sollicitudin dolor eget nisl elit id condimentum arcu erat varius cursus sem quis eros.
Alternatively, paste the text you wish to format as terminal output, select all pasted text, and click the </> button on the taskbar. This will indent the whole pasted section with one TAB, causing it to render the same way as described above.
Thereby increasing legibility thus making it easier for those trying to provide assistance.
For more information, please see:
Additionally
If your language isn’t English, please prepend any and all terminal commands with LC_ALL=C. For example:
LC_ALL=C bluetoothctl
This will just cause the terminal output to be in English, making it easier to understand and debug.
Edit:
See