fixes https://github.com/NixOS/nixos-hardware/issues/1114 and tlp also no longer recommands it.
Saving/loading the backlight state requires the acpi_backlight=native kernel parameter. acpi_call is required by TLP to get access to battery conditioning information from the firmware. Signed-off-by: David Anderson <dave@natulte.net>
The E495 and T495 are based on the same core Ryzen platform, so the E495 tweaks apply similarly to the T495. Tested on my own T495, works well.