diff --git a/scripts/power.sh b/scripts/power.sh
index 443b08a..38d5e5a 100755
--- a/scripts/power.sh
+++ b/scripts/power.sh
@@ -8,6 +8,13 @@ fi
 
 MODE=$1
 
+# Pin kmod: sudo inherits the caller's PATH (no secure_path in sudoers), so a
+# devshell or profile with busybox in it shadows modprobe with busybox's
+# applet, which hard-chdirs into /lib/modules/$(uname -r) and dies if that
+# directory is missing. kmod is compiled with /run/current-system/kernel-modules
+# as fallback and does not need /lib/modules.
+MODPROBE=/run/current-system/sw/bin/modprobe
+
 run_user_cmd() {
     if [ -n "${SUDO_USER:-}" ]; then
         local user_uid
@@ -30,7 +37,6 @@ if [ "$MODE" = "screenpad" ]; then
     fi
 elif [ "$MODE" = "ultra-powersave" ]; then
     # Switch to ultra-powersave mode
-    run_user_cmd systemctl --user stop voxtype
     auto-cpufreq --force powersave
     undervolt -t 70
     "$MODPROBE" -r nvidia_uvm nvidia_drm nvidia_modeset nvidia
@@ -38,7 +44,6 @@ elif [ "$MODE" = "ultra-powersave" ]; then
     run_user_cmd notify-send "Power Mode" "Switched to ultra-powersave mode" --expire-time=500
 elif [ "$MODE" = "powersave" ]; then
     # Switch to powersave mode (reset CPU, disable GPU)
-    run_user_cmd systemctl --user stop voxtype
     auto-cpufreq --force reset
     undervolt -t 93
     "$MODPROBE" -r nvidia_uvm nvidia_drm nvidia_modeset nvidia
@@ -49,8 +54,7 @@ elif [ "$MODE" = "performance" ]; then
     auto-cpufreq --force reset
     undervolt -t 93
     echo 1 | sudo tee /sys/bus/pci/rescan
-    modprobe nvidia nvidia_modeset nvidia_drm
-    run_user_cmd systemctl --user start voxtype
+    "$MODPROBE" nvidia nvidia_modeset nvidia_drm
     run_user_cmd notify-send "Power Mode" "Switched to performance mode" --expire-time=500
 else
     echo "Error: Invalid mode '$MODE'"