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amd/cpu/raphael-igpu: enable scatter/gather for kernel 6.6+

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Scatter/gather was introduced in 6.2 kernel and caused flickering
and various issues when running iGPU on Ryzen 7000-series CPUs.
This issue is not observed in kernel 6.6 or newer versions
so we can enable it for kernel 6.6 and newer versions.
This commit is contained in:
John Titor 2024-06-15 18:52:13 +05:30 committed by mergify[bot]
parent 239c3864fe
commit 0cd5621572
1 changed files with 11 additions and 4 deletions
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15
common/cpu/amd/raphael/igpu.nix
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@ -1,9 +1,15 @@
{ lib, pkgs, config, ... }: {
lib,
pkgs,
config,
...
}:
{ {
# Sets the kernel version to the latest kernel to make the usage of the iGPU possible if your kernel version is too old # Sets the kernel version to the latest kernel to make the usage of the iGPU possible if your kernel version is too old
# Disables scatter/gather which was introduced with kernel version 6.2 # Disables scatter/gather which was introduced with kernel version 6.2
# It produces completely white or flashing screens when enabled while using the iGPU of Ryzen 7000-series CPUs (Raphael) # It produces completely white or flashing screens when enabled while using the iGPU of Ryzen 7000-series CPUs (Raphael)
# This issue is not seen in kernel 6.6 or newer versions
imports = [ ../. ]; imports = [ ../. ];
@ -12,8 +18,9 @@
kernelPackages = pkgs.linuxPackages_latest; kernelPackages = pkgs.linuxPackages_latest;
}) })
(lib.mkIf (lib.versionAtLeast config.boot.kernelPackages.kernel.version "6.2") { (lib.mkIf (
kernelParams = ["amdgpu.sg_display=0"]; (lib.versionAtLeast config.boot.kernelPackages.kernel.version "6.2")
}) && (lib.versionOlder config.boot.kernelPackages.kernel.version "6.6")
) { kernelParams = [ "amdgpu.sg_display=0" ]; })
]; ];
} }