I don't know where the actual i915 source is, but I'm guessing it's this? edid_quirk_list doesn't seem to mention Legion.Īlso, what's the difference between i915 issues on and bugzilla.kernel. During installation, the the brightness function does not work and screen goes to Max brightness. I then installed the latest Nvidia driver 381.65 for the GTX 1070. The gitlab link mentions the edid_quirk_list. Installed all necessary drivers for my laptop model from ASUS's website. Pretty sure I need to somehow patch the i915 driver.

I have also tried those parameters before and they did nothing. My kernel parameters did not contain either 'acpi_osi=linux, acpi_backlight=vendor' when I added 'i915.enable_dpcd_backlight=1'. Removing the lines and doing a cold reboot restored backlight function.

Maybe doesn't apply to your Legion unit, but have you tried removing these kernel parameters 'acpi_osi=linux, acpi_backlight=vendor' ? I added these on a test Thinkpad T14s (AMD) uni and the backlight stayed constant and couldn't be changed by the buttons FN+F5/F6. I have seen the bug report regarding the sound before. I probably have to patch the kernel, but I'm not too familiar with doing that. Just adding the kernel parameter didn't work. Like you mentioned Legion 5Pi is a different device and the brightness issue is still present: After some time you will also get updated drivers from upstream and then you will also not be required to add this kernel parameter. You only need to add `i915.enable_dpcd_backlight=1` as kernel parameter and your backlight issue will be resolved. Legion 7i backlight issue is already resolved: Ī friend of mine has this laptop so I have already confirmed this with him and it is working. I only get sound with external speakers or bluetooth.

Off topic, but do you guys have working internal speakers? Mine doesn't work. Just adding that I have a different laptop with similar specs. I subscribed hoping you guys could find a solution to the backlight issue.

Computer brightness not working