Screen brightness will decrease or increase a certain amount upon pressing the brightness button on the keyboard.
Actual Behaviour
No change in brightness when the buttons are pressed, but the brightness slider in the taskbar does work in adjusting the brightness. Also installed xbacklight, but the command xbacklight [-dec | -inc] 20 does not work either.
System Information
Hardware: Thinkpad W550s
KeyPress event, serial 29, synthetic NO, window 0x3a00001,
root 0x873, subw 0x3a00002, time 1727481, (39,43), root:(818,407),
state 0x10, keycode 233 (keysym 0x1008ff02, XF86MonBrightnessUp), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False
KeyRelease event, serial 29, synthetic NO, window 0x3a00001,
root 0x873, subw 0x3a00002, time 1727481, (39,43), root:(818,407),
state 0x10, keycode 233 (keysym 0x1008ff02, XF86MonBrightnessUp), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
Hello @huffin,
If you are connected (even in live mode),
yay -S brightnessctl
brightnessctl set 5%+
brightnessctl set 5%-
and add shortcuts you prefer (F12, F11) to the above commands in Keyboard Shortcuts… or so.
(xev from package xorg-xev also can be used to check key codes). I’ve tested on Lenovo Ideapad.
Most probably it will work out of the box. But even if not, it should be no problem to bind the backlight control to your brightness-keys.
Edit: Sorry, misread it. I thought you were asking if it would be included in the installed environment. What do you mean by “later in the live environment”?
As this utility is a community package and as such it can not be put on the list of the user package list of EOS or something like that. (It’s quality-control in some respect I guess)
I heard that we are living in an agile age or times so do not wait for others to solve your problem.
If you need a live bootable image to test displays I see 3 options:
POP!_OS_22_04 provides this in Live mode Fn + F12, Fn + F11 (boot is not so fast as that of EOS)
This is the 2nd fastest solution I know.
3. If you insist on an arch based system, a bit more time consuming process (for your machine)
to install https://arcolinuxb.com/byoi-on-arcolinux-xfce/ add a line: brightnessctl to ~/arco-xfce/archiso/packages.x86_64
and Build Your Own Iso (BYOI) with the 30…sh script It takes cca. 40 minutes.
4.
Install EOS to a flash drive (with enjoyable speed like Samsung 128 GB FIT Plus)
Re @huffin 's question.
I meant if this could be included in the next iteration of the live iso. That way the brightness keys would work out of the box for a better testing experience.