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Wifi fixed by removing iwlwifi-cc-a0-48.ucode

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Tom Bereknyei 2019-07-21 21:49:13 -04:00 committed by Tom Bereknyei
parent 814bd1a024
commit 64afb7c12d
2 changed files with 24 additions and 1 deletions
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5
dell/xps/15-7590/README.wiki
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@ -22,7 +22,10 @@ These settings are needed both for booting the final install, and installer itse
* ''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)
~~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.
```
# Use the systemd-boot EFI boot loader.
boot.loader.systemd-boot.enable = true;

20
dell/xps/15-7590/default.nix
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@ -11,4 +11,24 @@
boot.kernelPackages = pkgs.linuxPackages_5_1;
boot.loader.efi.canTouchEfiVariables = lib.mkDefault true;
# The 48.ucode causes the Killer wifi card to crash.
# The iwlfwifi-cc-a0-46.ucode works perfectly
nixpkgs.pkgs = import <nixpkgs> {
config.allowUnfree = true;
overlays = [
(self: super: {
firmwareLinuxNonfree = super.firmwareLinuxNonfree.overrideAttrs (old: {
src = super.fetchgit{
url = "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git";
rev = "bf13a71b18af229b4c900b321ef1f8443028ded8";
sha256 = "1dcaqdqyffxiadx420pg20157wqidz0c0ca5mrgyfxgrbh6a4mdj";
};
postInstall = ''
rm $out/lib/firmware/iwlwifi-cc-a0-48.ucode
'';
outputHash = "0dq48i1cr8f0qx3nyq50l9w9915vhgpwmwiw3b4yhisbc3afyay4";
});
})
];
};
}