I have newly installed Ubuntu 20.04.2.0 LTS on my laptop (Asus Zephyrus G15, AMD 5900HS, Nvidia 3070). Two major issues I'm having trouble fixing:
- Neither the brightness slider in ubuntu nor the brightness Fn keys on my keyboard work, the brightness does not change at all.
- The sound slider in ubuntu and the volume keys on my keyboard do produce the default "beep" sound whenever volume is adjusted, however, the volume stays constant and does not actually change (except mute).
I tried changing one line in the bootloader file to each of the following, then ran
sudo update-grub and rebooted:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=native"
Neither option worked.
I tried following this guide to install Nvidia drivers. However, unlike in the guide, my software & updates does not show any available updates for Nvidia: Following the second method in the guide of using command line to update Nvidia drivers, I typed into the command line:
and got no output.
I also tried checking which graphics card ubuntu is actually using following this thread. By typing this in the command line:
lspci -vnnn | perl -lne 'print if /^\d+\:.+(\[\S+\:\S+\])/' | grep VGA
I got the following output:
01:00.0 VGA compatible controller : NVIDIA Corporation Device [10de:249d] (rev a1) (prog-if 00 [VGA controller]) 06:00.0 VGA compatible controller : Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:1638] (rev c4) (prog-if 00 [VGA controller])
I'm not sure how to interpret this, does this mean the system is indeed using NVIDIA GPU?
I have not yet tried any solution for the volume control problem as I can't seem to find anyone else with similar problems.