diff --git a/hosts/containers/sdrweb/default.nix b/hosts/containers/sdrweb/default.nix
index 8d1f3980..ea3bc437 100644
--- a/hosts/containers/sdrweb/default.nix
+++ b/hosts/containers/sdrweb/default.nix
@@ -15,7 +15,7 @@
 
   # http https
   networking.firewall.allowedTCPPorts = [ 80 443 ];
-  
+
   services.nginx = {
     enable = true;
     recommendedProxySettings = true;
diff --git a/hosts/containers/ticker/default.nix b/hosts/containers/ticker/default.nix
index f4894353..1696c79f 100644
--- a/hosts/containers/ticker/default.nix
+++ b/hosts/containers/ticker/default.nix
@@ -113,6 +113,10 @@ with lib;
       url = "https://mobilizon.envs.net/@ffdd/feed/ics";
       color = "#AFAF00";
     };
+    astro = {
+      url = "https://mobilizon.c3d2.de/@astro/feed/ics";
+      color = "#333333";
+    };
     dhmd = {
       url = "https://scrape.hq.c3d2.de/dhmd-veranstaltungen.ics";
       color = "#E00728";
diff --git a/hosts/dacbert/default.nix b/hosts/dacbert/default.nix
index a325bb10..c50bcfdf 100644
--- a/hosts/dacbert/default.nix
+++ b/hosts/dacbert/default.nix
@@ -41,14 +41,19 @@
       };
     };
     kernelPackages = pkgs.linuxPackages_latest;
-    # kernelPackages = pkgs."linuxPackages_rpi${toString config.boot.loader.raspberryPi.version}";
+    # TODO: can be removed when https://github.com/NixOS/nixpkgs/pull/142015 is merged
+    kernelPatches = [{
+      name = "disable-FB_SIMPLE";
+      patch = null;
+      extraConfig = ''
+        FB_SIMPLE m
+      '';
+    }];
     kernelParams = lib.mkForce [
       "snd_bcm2835.enable_headphones=1"
       # don't let sd-image-aarch64.nix setup serial console as it breaks bluetooth.
       "console=tty0"
     ];
-    # Don't build ZFS for aarch64 (broken?)
-    supportedFilesystems = lib.mkForce [ "vfat" "ext4" ];
 
     tmpOnTmpfs = true;
   };
diff --git a/hosts/radiobert/base.nix b/hosts/radiobert/base.nix
index caf01133..5be95b78 100644
--- a/hosts/radiobert/base.nix
+++ b/hosts/radiobert/base.nix
@@ -38,8 +38,14 @@
       };
     };
     kernelPackages = pkgs.linuxPackages_latest;
-    # Don't build ZFS for aarch64 (broken?)
-    supportedFilesystems = lib.mkForce [ "vfat" "ext4" ];
+    # TODO: can be removed when https://github.com/NixOS/nixpkgs/pull/142015 is merged
+    kernelPatches = [{
+      name = "disable-FB_SIMPLE";
+      patch = null;
+      extraConfig = ''
+        FB_SIMPLE m
+      '';
+    }];
 
     tmpOnTmpfs = true;
   };