I am using Fedora for the first time. Everything works perfectly so far, except a small issue with the brightness controls. Brightness is always at maximum in my laptop and I can’t change it. Brightness control keys respond and I can see the brightness bar goes up or down, but this has no effect. It always works at maximum.
I followed the solution in this thread but it did not work for me.
This laptop is a Lenovo Legion 5 (82B1000AUS) with AMD Ryzen™ 7 4800H Processor (2.90 GHz, up to 4.20 GHz Max Boost, 8 Cores, 16 Threads, 8 MB Cache) and NVidia Geforce GTX 1660 Ti.
Fedora 35 with Gnome
Linux version: 5.17.4-200.fc35.x86_64
I am not sure if they are related, but following error lines are from my
[ 37.473611] nvidia-gpu 0000:01:00.3: i2c timeout error e0000000 [ 37.473621] ucsi_ccg 20-0008: i2c_transfer failed -110 [ 37.473626] ucsi_ccg 20-0008: ucsi_ccg_init failed - -110 [ 37.473631] ucsi_ccg: probe of 20-0008 failed with error -110 ... [ 1.867037] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:00/LNXVIDEO:00/input/input4 [ 1.867166] ACPI: video: Video Device [VGA] (multi-head: yes rom: no post: no) [ 1.867231] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GP17.VGA.LCD._BCM.AFN7], AE_NOT_FOUND (20211217/psargs-330) [ 1.867239] ACPI Error: Aborting method \_SB.PCI0.GP17.VGA.LCD._BCM due to previous error (AE_NOT_FOUND) (20211217/psparse-529) [ 1.867248] ACPI: \_SB_.PCI0.GP17.VGA_.LCD_: _BCM evaluation failed
This brightness level hurts my eyes, I can’t comfortably use my computer for more than a few minutes.
Any help will be appreciated.