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-= Dell XPS 15 7590 =
-*Mostly copied from 15-9550
-
-== Tested Hardware ==
-
-* CPU: Intel(R) Core(TM) i9-9980HK
-* RAM: 32 GB
-* HDD: 1 TiB SSD
-* Screen: 15" 4k (3840✕2160)
-* Input: Touchscreen and trackpad.
-
-== Firmware Configuration ==
-
-Not much tweaking of NixOS itself was needed. But we currently cannot automate the firmware setup, so this must be done by hand.
-
-=== Before installation ===
-
-These settings are needed both for booting the final install, and installer itself. Therefore, they must be done first.
-
-* ''Disable Secure Boot (but keep UEFI Boot).'' Thankfully doing so is as easy as changing any other simple setting.
-
-* ''Disable Intel hardware RAID and use AHCI instead.'' Intel doesn't seem to provide a working linux driver for this. (If you just have SSD it's pointless and just slows things down needlessly anyways.)
-
-=== Wifi ===
-~~Wifi does not work with kernels older than 5.1 (firmware not present) or newer~~ (https://bbs.archlinux.org/viewtopic.php?id=247705)
-
-Update: The 48.ucode causes the Killer wifi card to crash. The iwlfwifi-cc-a0-46.ucode works perfectly.
-default.nix contains an overlay that removes the offending ucode from the linux-firmware bundle.
-To use it one also needs to enable unfree firmware in their own configuration (<code>hardware.enableRedistributableFirmware = true;</code>)
-
-```
- # Use the systemd-boot EFI boot loader.
- boot.loader.systemd-boot.enable = true;
- boot.loader.grub = {
- device = "nodev";
- efiSupport = true;
- efiInstallAsRemovable = true;
- };
- boot.loader.efi.canTouchEfiVariables = true;
- boot.kernelPackages = pkgs.linuxPackages_5_1;
-```
-Disable the `canTouchEfiVariables` after a boot or two to prevent NVRAM wearout.
-
-
-=== After installation ===
-
-* ''Add systemd-boot to UEFI boot list.'' The (uneditable anyways) settings mapping drive UUIDs to HD* work fine.
-
-=== Optional ===
-
-* ''Update BIOS.'' According to Reddit, this helps with battery life.
-
-=== Troubleshooting ===
-