dumpyourvms: swap, cpu schedutil, powersaving

hosts/dumpyourvms/.config/sway/config.d/autostart.conf

@@ -3,4 +3,4 @@
 # Example:
 # exec swayidle
 
-#exec qMasterPassword
+exec qMasterPassword

hosts/dumpyourvms/dumpyourvms.nix

@@ -19,8 +19,13 @@ in
     pub-solar.virtualisation.enable = true;
 
     # fix backlight for keyboard and brightness, adjust function key binding
-    boot.kernelParams = [ "acpi_backlight=video" "hid_apple.fnmode=2" "intel_pstate=active" ];
+    boot.kernelParams = [ "acpi_backlight=video" "hid_apple.fnmode=2" "intel_pstate=passive" "resume_offset=47366144" ];
     boot.loader.efi.canTouchEfiVariables = true;
+    boot.resumeDevice = "/dev/mapper/cryptroot";
+
+    systemd.sleep.extraConfig = ''
+      HibernateMode=shutdown
+    '';
 
     hardware = {
       cpu.intel.updateMicrocode = true;
@@ -33,18 +38,47 @@ in
 
     services.unbound = import ./unbound.nix;
 
-    # Radeon driver seems to work better than amdgpu with Radeon R9 M370X
-    services.xserver.videoDrivers = [ "radeon" ];
+    # Disable dedicated GPU, use integrated Intel GPU to save battery
+    # Set default brightness to 50%
+    # https://ubuntuforums.org/showthread.php?t=2409856
+    services.cron.systemCronJobs = [
+      "@reboot root ${pkgs.util-linux}/bin/rfkill block bluetooth"
+      "@reboot root ${pkgs.coreutils}/bin/echo OFF > /sys/kernel/debug/vgaswitcheroo/switch"
+      "@reboot root ${pkgs.coreutils}/bin/echo 510 > /sys/class/backlight/gmux_backlight/brightness"
+    ];
+
+    # Increase console font size for HiDPI display
+    console = {
+      earlySetup = true;
+      font = lib.mkForce "ter-i32b";
+      packages = [ pkgs.terminus_font ];
+    };
 
     # Thunderbolt tools
     services.hardware.bolt.enable = true;
 
+    powerManagement = {
+      # Use new schedutil govenor
+      # https://github.com/NixOS/nixpkgs/pull/42330
+      # https://www.kernel.org/doc/html/v5.10/admin-guide/pm/cpufreq.html#schedutil
+      cpuFreqGovernor = lib.mkDefault "schedutil";
+
+      # brcmfmac being loaded during hibernation would inhibit a successful resume
+      # https://bugzilla.kernel.org/show_bug.cgi?id=101681#c116.
+      # Also brcmfmac could randomly crash on resume from sleep.
+      powerUpCommands = lib.mkBefore "${pkgs.kmod}/bin/modprobe brcmfmac";
+      powerDownCommands = lib.mkBefore "${pkgs.kmod}/bin/rmmod brcmfmac";
+    };
+
+    # change lid switch behaviour
+    #services.logind.lidSwitch = "hibernate";
+
     # TLP for power management
     services.tlp = {
       enable = true;
       settings = {
         CPU_SCALING_GOVERNOR_ON_AC = "performance";
-        CPU_SCALING_GOVERNOR_ON_BAT = "powersave";
+        CPU_SCALING_GOVERNOR_ON_BAT = "schedutil";
         CPU_BOOST_ON_AC = 1;
         CPU_BOOST_ON_BAT = 0;
       };
@@ -53,8 +87,9 @@ in
     services.udev.extraRules =
       # Disable XHC1 wakeup signal to avoid resume getting triggered some time
       # after suspend. Reboot required for this to take effect.
-      ''SUBSYSTEM=="pci", KERNEL=="0000:00:14.0", ATTR{power/wakeup}="disabled"'';
-
+      lib.optionalString
+        (lib.versionAtLeast config.boot.kernelPackages.kernel.version "3.13")
+        ''SUBSYSTEM=="pci", KERNEL=="0000:00:14.0", ATTR{power/wakeup}="disabled"'';
 
     services.printing.enable = true;
     services.printing.drivers = [ pkgs.brlaser ];
@@ -76,9 +111,12 @@ in
 
 
     # WLAN frequency compliance (e.g. check for radar with DFS)
+    #
+    # Radeon driver seems to work better than amdgpu with Radeon R9 M370X
     hardware.firmware = with pkgs; [ wireless-regdb ];
     boot.extraModprobeConfig = ''
       options cfg80211 ieee80211_regdom="DE"
+      blacklist amdgpu
     '';
 
     # This value determines the NixOS release from which the default

hosts/dumpyourvms/hardware-configuration.nix

@@ -29,10 +29,13 @@
       fsType = "vfat";
     };
 
-  swapDevices =
-    [{ device = "/dev/disk/by-uuid/02fa042f-7310-4be6-a615-524d5d7dc909"; }];
+  swapDevices = [
+    {
+      device = "/swapfile";
+      size = 18432;
+    }
+  ];
 
-  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
   # high-resolution display
   hardware.video.hidpi.enable = lib.mkDefault true;
 }

hosts/dumpyourvms/networking.nix

@@ -13,6 +13,8 @@
     "10.0.1.202" = [ "cn02.lev-1" ];
     "10.0.1.203" = [ "cn03.lev-1" ];
     "10.0.1.204" = [ "cn04.lev-1" ];
+    "10.0.1.205" = [ "cn05.lev-1" ];
+    "10.0.1.206" = [ "cn00.lev-1" ];
   };
 
   wireguard.enable = true;

hosts/dumpyourvms/unbound.nix

@@ -19,7 +19,7 @@
     # fritz.box stub zone
     stub-zone = {
       name = "fritz.box";
-      stub-addr = "192.168.178.1";
+      stub-addr = "192.168.13.1";
     };
 
     # DNS over DLS forwarding