The solution to the problem that the computer cannot adjust the screen brightness and sound after installing OpenSUSE Leap 15.3

Basic Information

Equipment:Panasonic CF-SX2

System version:OpenSUSE Leap 15.3

Kernel version:5.3.18

It may be due to the update of the linux kernel. After my test, only 13.1 of the suse system can perfectly call various functions, including controlling the volume and screen brightness of the computer through the Fn key of the keyboard. It is useless to edit the grub2 file. If you also have such a problem, you can use the command line method to temporarily solve this problem.

Here is the tutorial

1. Open the terminal, because I installed the gnome desktop, so I used the gnome version.

2. Type echo 20 > /sys/class/backlight/intel_backlight/brightness in the terminal.The value of "20" can be changed, the larger the value, the brighter the screen. In my test, the direct sudo command does not work well, so I corrected su.

3. Open another terminal. Type alsamixer command, the PulseAudio sound manager appears.Press F6, select your sound card, mine is HDA Intel PCH.

4. Then enter the control page of HDA Intel PCH. Use the right arrow key → on the keyboard to select Headphone, then use the up key ↑ to adjust the sound upward, and finally press Esc to exit.

Through the above operations, although it is not the most perfect solution, at least the computer has sound, and the screen brightness can be adjusted as needed.

Precautions

Every time the computer restarts, it needs to be reset. When the computer is just started, you can adjust the brightness through the Fn key, and the brightness will not change after startup.