Make USB persist file read-only to solve weird race conditions

Changes

1 changed files (+4/-1)

• ThinkPad-X1-Yoga-Gen-6/default.nix
  • @@ -135,9 +135,12 @@
    before = [ "sleep.target" ]; # Alternatively I could use a udev rule but it's less transparent and harder to debug # Make sure we kill fprintd first and ignore errors since I suspect fprintd disables USB persist when it quits + # Then make the persist file read-only + # This solves the race condition where fprintd starts after kill-fprintd right before sleep script = '' ${pkgs.killall}/bin/killall fprintd || true - echo 1 > /sys/bus/usb/devices/3-3/power/persist + echo 1 > /sys/bus/usb/devices/3-3/power/persist || true + chmod 444 /sys/bus/usb/devices/3-3/power/persist ''; };