Today in MiniTool’s post, we will show you how to fix the issue of laptop brightness not changing. 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 Windows 10 is a stable operating system in performance, some issues may also happen in some cases and you need to troubleshoot it. The gitlab link mentions the edid_quirk_list.
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.
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