Do not try to set fanspeed if connection to X11 failed

src/ext_xnvctrl.c

@@ -82,6 +82,8 @@ int hm_XNVCTRL_XOpenDisplay (XNVCTRL_PTR *xnvctrl)
 
   if (dpy == NULL)
   {
+    xnvctrl->dpy = NULL;
+
     return -1;
   }
 
@@ -92,11 +94,15 @@ int hm_XNVCTRL_XOpenDisplay (XNVCTRL_PTR *xnvctrl)
 
 void hm_XNVCTRL_XCloseDisplay (XNVCTRL_PTR *xnvctrl)
 {
+  if (xnvctrl->dpy == NULL) return;
+
   xnvctrl->XCloseDisplay (xnvctrl->dpy);
 }
 
 int get_fan_control (XNVCTRL_PTR *xnvctrl, int gpu, int *val)
 {
+  if (xnvctrl->dpy == NULL) return -1;
+
   int rc = xnvctrl->XNVCTRLQueryTargetAttribute (xnvctrl->dpy, NV_CTRL_TARGET_TYPE_GPU, gpu, 0, NV_CTRL_GPU_COOLER_MANUAL_CONTROL, val);
 
   if (!rc) return -1;
@@ -106,6 +112,8 @@ int get_fan_control (XNVCTRL_PTR *xnvctrl, int gpu, int *val)
 
 int set_fan_control (XNVCTRL_PTR *xnvctrl, int gpu, int val)
 {
+  if (xnvctrl->dpy == NULL) return -1;
+
   xnvctrl->XNVCTRLSetTargetAttribute (xnvctrl->dpy, NV_CTRL_TARGET_TYPE_GPU, gpu, 0, NV_CTRL_GPU_COOLER_MANUAL_CONTROL, val);
 
   int cur;
@@ -121,6 +129,8 @@ int set_fan_control (XNVCTRL_PTR *xnvctrl, int gpu, int val)
 
 int get_core_threshold (XNVCTRL_PTR *xnvctrl, int gpu, int *val)
 {
+  if (xnvctrl->dpy == NULL) return -1;
+
   int rc = xnvctrl->XNVCTRLQueryTargetAttribute (xnvctrl->dpy, NV_CTRL_TARGET_TYPE_GPU, gpu, 0, NV_CTRL_GPU_CORE_THRESHOLD, val);
 
   if (!rc) return -1;
@@ -139,6 +149,8 @@ int get_fan_speed_current (XNVCTRL_PTR *xnvctrl, int gpu, int *val)
 
 int get_fan_speed_target (XNVCTRL_PTR *xnvctrl, int gpu, int *val)
 {
+  if (xnvctrl->dpy == NULL) return -1;
+
   int rc = xnvctrl->XNVCTRLQueryTargetAttribute (xnvctrl->dpy, NV_CTRL_TARGET_TYPE_COOLER, gpu, 0, NV_CTRL_THERMAL_COOLER_LEVEL, val);
 
   if (!rc) return -1;
@@ -148,6 +160,8 @@ int get_fan_speed_target (XNVCTRL_PTR *xnvctrl, int gpu, int *val)
 
 int set_fan_speed_target (XNVCTRL_PTR *xnvctrl, int gpu, int val)
 {
+  if (xnvctrl->dpy == NULL) return -1;
+
   xnvctrl->XNVCTRLSetTargetAttribute (xnvctrl->dpy, NV_CTRL_TARGET_TYPE_COOLER, gpu, 0, NV_CTRL_THERMAL_COOLER_LEVEL, val);
 
   int cur;

src/hashcat.c

@@ -14512,7 +14512,7 @@ int main (int argc, char **argv)
         }
       }
 
-      if (data.hm_adl == NULL && data.hm_nvml == NULL && data.hm_xnvctrl)
+      if (data.hm_adl == NULL && data.hm_nvml == NULL && data.hm_xnvctrl == NULL)
       {
         gpu_temp_disable = 1;
       }
@@ -14654,7 +14654,7 @@ int main (int argc, char **argv)
           data.hm_device[device_id].xnvctrl           = 0;
           data.hm_device[device_id].od_version        = hm_adapters_adl[platform_devices_id].od_version;
           data.hm_device[device_id].fan_get_supported = hm_adapters_adl[platform_devices_id].fan_get_supported;
-          data.hm_device[device_id].fan_set_supported = hm_adapters_adl[platform_devices_id].fan_set_supported;
+          data.hm_device[device_id].fan_set_supported = 0;
         }
 
         if (device_param->device_vendor_id == VENDOR_ID_NV)
@@ -16181,7 +16181,7 @@ int main (int argc, char **argv)
               else if (device_param->device_vendor_id == VENDOR_ID_NV)
               {
                 #ifdef _POSIX
-                rc = hm_set_fanspeed_with_device_id_xnvctrl (device_id, fanspeed);
+                rc = set_fan_control (data.hm_xnvctrl, data.hm_device[device_id].xnvctrl, NV_CTRL_GPU_COOLER_MANUAL_CONTROL_TRUE);
                 #endif
               }
 

src/shared.c

@@ -3194,18 +3194,7 @@ int hm_get_fanpolicy_with_device_id (const uint device_id)
 
     if (data.devices_param[device_id].device_vendor_id == VENDOR_ID_NV)
     {
-      #if defined(LINUX)
-      if (data.hm_xnvctrl)
-      {
-        if (set_fan_control (data.hm_xnvctrl, data.hm_device[device_id].xnvctrl, NV_CTRL_GPU_COOLER_MANUAL_CONTROL_TRUE) != 0) return -1;
-
-        return 1;
-      }
-      #endif
-
-      #if defined(WIN)
       return 1;
-      #endif
     }
   }