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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 ===