diff --git a/PveSensorsV2/PVEMod_Config.pm b/PveSensorsV2/PVEMod_Config.pm
index d00046a..664cb89 100644
--- a/PveSensorsV2/PVEMod_Config.pm
+++ b/PveSensorsV2/PVEMod_Config.pm
@@ -35,6 +35,8 @@ our %config = (
         nvidia_enabled => 0,
     },
     debug => {
+        log_enabled         => 0,
+        log_file            => '/tmp/pve-mod-debug.log',
         nvidia_mode         => 1,
         nvidia_devices_file => '/tmp/nvidia-smi-devices.csv',
         nvidia_output_file  => '/tmp/nvidia-smi-output.csv',
diff --git a/PveSensorsV2/PVEMod_Utils.pm b/PveSensorsV2/PVEMod_Utils.pm
index cc83615..80f7faa 100644
--- a/PveSensorsV2/PVEMod_Utils.pm
+++ b/PveSensorsV2/PVEMod_Utils.pm
@@ -7,7 +7,9 @@ use Exporter 'import';
 use JSON;
 use Fcntl qw(O_CREAT O_EXCL O_WRONLY);
 
-use PVE::PVEMod::Config qw($DEBUG_ENABLED $VERSION $pve_mod_working_dir);
+use PVE::PVEMod::Config qw($DEBUG_ENABLED $VERSION $pve_mod_working_dir %config);
+
+my $debug_log_fh;
 
 our @EXPORT_OK = qw(
     debug
@@ -43,12 +45,25 @@ sub debug {
 
     $sub1 =~ s/.*:://;
 
+    my $output;
     if (defined $sub2) {
         $sub2 =~ s/.*:://;
-        warn "[$sub2 -> $sub1:$line] $message\n";
+        $output = "[$sub2 -> $sub1:$line] $message\n";
     } else {
-        warn "[$sub1:$line] $message\n";
+        $output = "[$sub1:$line] $message\n";
     }
+
+    warn $output;
+
+    if ($config{debug}{log_enabled} && !defined $debug_log_fh) {
+        if (open(my $fh, '>>', $config{debug}{log_file})) {
+            $fh->autoflush(1);
+            $debug_log_fh = $fh;
+        } else {
+            warn "[debug] Failed to open log file $config{debug}{log_file}: $!\n";
+        }
+    }
+    print $debug_log_fh $output if defined $debug_log_fh;
 }
 
 # ============================================================================