Hi guys, I'm suffering from the same issue with controlling back light through Fn+F3/F4. Finally, I found a method to fix the problem unexpectedly! As long as power reset your HP laptop, it will be fixed! Note that my laptop is HP elitebook 845G7 with AMD 4700U version. I think it will work for recently all series of HP laptop.
Here's the Step of Power reset from HP official website: (1) Turn off your laptop. (2) Unplug all cords connecting to your laptops, including power cord / HDMI / USB device! (3) Press and hold the power button for approximately 15 seconds. (4) Plug in Power cord first, with others cords and device disconnected. (5) Turn on your HP laptop and it will be fixed magically. (Ref): https://support.hp.com/sg-en/document/ish_1997208-1551050-16 Thanks to another Linux Distribution Community - Mint! https://forums.linuxmint.com/viewtopic.php?t=333181 [My Debugging path] (1) I've tried the "Update the latest firmware" method and it will work for a short time and it fail again. (2) Tried any version of kernel I could found. (3) Update the grub by appending "acpi_backlight=vendor" to /etc/default/grub (4) Update the latest AMD GPU. Thank you guys! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1841039 Title: Multiple keys have same keycode on HP ProBook 450 G6 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1841039/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
