[Intel-gfx] [bug report] High refresh rates broken on eDP display with Optimus

[Jeffrey Ellison]

Hello,

I have an Optimus laptop with Intel Tiger Lake H GT1 integrated graphics
(i7-11800H) and NVIDIA RTX 3080 Mobile GPU. The inbuilt display is 165 Hz
and is connected to the IGPU by eDP. As of any Kernel version 5.16 onwards,
Xrandr only detects 60 Hz as a possible refresh rate. The problem also
occurs on Wayland. Downgrading to 5.15.13 resolves the problem.

Another user of a laptop with similar specs also reports the same issue and
provides Xrandr output: https://bbs.archlinux.org/viewtopic.php?id=274012

Distro: Arch Linux
Laptop: Razer Blade 15" Advanced 2021 (RZ09-0409CEA3)
CPU: i7-11800H
IGPU: Tiger Lake H GT1 [UHD Graphics]
DGPU: NVIDIA RTX 3080 Laptop (Ampere GA104M)
Drivers: NVIDIA Proprietary (510.54-9), Mesa (21.3.7)
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