Merge #613 #615

613: Add config for Dell XPS 15 9520 r=Mic92 a=palfrey



615: add dell precision 3541 r=Mic92 a=anstylian



Co-authored-by: Tom Parker-Shemilt <tom.parkershemilt@doxy.me>
Co-authored-by: Tom Parker-Shemilt <palfrey@tevp.net>
Co-authored-by: angelos <agathangelos.stylianidis@gmail.com>

dell/precision/3541/default.nix

@@ -0,0 +1,28 @@
+{ lib, ... }:
+
+{
+  imports = [
+    ./intel
+  ];
+
+  # Boot loader
+  boot.kernelParams = [
+    # fix lspci hanging with nouveau
+    # source https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1803179/comments/149
+    "acpi_rev_override=1"
+    "acpi_osi=Linux"
+    "nouveau.modeset=0"
+    "pcie_aspm=force"
+    "drm.vblankoffdelay=1"
+    "nouveau.runpm=0"
+    "mem_sleep_default=deep"
+    # fix flicker
+    # source https://wiki.archlinux.org/index.php/Intel_graphics#Screen_flickering
+    "i915.enable_psr=0"
+  ];
+
+  boot.kernelModules = lib.mkDefault [ "kvm-intel" ];
+
+  # Recommended in NixOS/nixos-hardware#127
+  services.thermald.enable = lib.mkDefault true;
+}

dell/precision/3541/intel/default.nix

@@ -0,0 +1,9 @@
+{ lib, pkgs, ... }:
+
+{
+  imports = [
+    ../../../../common/cpu/intel
+    ../../../../common/pc/laptop
+    ../../../../common/gpu/nvidia/disable.nix
+  ];
+}

dell/xps/15-9520/README.wiki

@@ -0,0 +1,22 @@
+= Dell XPS 15 9520 =
+
+== Tested Hardware ==
+
+* CPU: Intel(R) Core(TM) i7-12700H CPU
+* RAM: 32 GB
+* HDD: 1 TiB SSD
+* Screen: 15" 4k (3840✕2160)
+* Graphics: NVIDIA Corporation GA107M [GeForce RTX 3050 Ti Mobile], with Intel Graphics too.
+* Input: Touchscreen and trackpad.
+
+== Notes ==
+
+Also tested with Dell WD19TB Thunderbolt Dock.
+
+== NVIDIA Offload ==
+
+In order to run a program on the NVIDIA gpu, you can use the `nvidia-offload` function, for example:
+```
+nvidia-offload `nix-shell -p glxinfo --run 'glxgears'`
+```
+This is a short bash script that sets the proper environment variables and calls your command.

dell/xps/15-9520/default.nix

@@ -0,0 +1,18 @@
+{ lib, ... }:
+{
+  imports = [
+    ../../../common/cpu/intel
+    ../../../common/pc/laptop
+    ../../../common/pc/laptop/ssd
+  ];
+
+  # This will save you money and possibly your life!
+  services.thermald.enable = lib.mkDefault true;
+  
+  # WiFi speed is slow and crashes by default (https://bugzilla.kernel.org/show_bug.cgi?id=213381)
+  # disable_11ax - required until ax driver support is fixed
+  # power_save - works well on this card
+  boot.extraModprobeConfig = ''
+    options iwlwifi power_save=1 disable_11ax=1
+  '';
+}

dell/xps/15-9520/nvidia/default.nix

@@ -0,0 +1,15 @@
+{ lib, ... }:
+{
+  imports = [
+    ../default.nix
+    ../../../../common/gpu/nvidia/prime.nix
+  ];
+
+  hardware.nvidia.prime = {
+    # Bus ID of the Intel GPU.
+    intelBusId = lib.mkDefault "PCI:0:2:0";
+
+    # Bus ID of the NVIDIA GPU.
+    nvidiaBusId = lib.mkDefault "PCI:1:0:0";
+  };
+}