diff --git a/src/input/mpegts/linuxdvb/linuxdvb_frontend.c b/src/input/mpegts/linuxdvb/linuxdvb_frontend.c
index 19aa2fcc7..b112ca9a1 100644
--- a/src/input/mpegts/linuxdvb/linuxdvb_frontend.c
+++ b/src/input/mpegts/linuxdvb/linuxdvb_frontend.c
@@ -845,7 +845,7 @@ ioctl_bad( linuxdvb_frontend_t *lfe, int bit )
 }
 
 static void
-linuxdvb_frontend_monitor ( void *aux )
+linuxdvb_frontend_monitor_ ( void *aux )
 {
   uint16_t u16;
   uint32_t u32;
@@ -875,11 +875,14 @@ linuxdvb_frontend_monitor ( void *aux )
 
   /* Close FE */
   if (lfe->lfe_fe_fd > 0 && !lfe->lfe_refcount && lfe->lfe_powersave) {
+    tvh_mutex_lock(&global_lock);//DEEPTHO
     if (lfe->lfe_satconf && linuxdvb_satconf_power_save(lfe->lfe_satconf) > 0) {
       /* re-arm */
       mtimer_arm_rel(&lfe->lfe_monitor_timer, linuxdvb_frontend_monitor, lfe, sec2mono(1));
+      tvh_mutex_unlock(&global_lock);//DEEPTHO
       return;
     }
+    tvh_mutex_unlock(&global_lock);//DEEPTHO
     linuxdvb_frontend_close_fd(lfe, buf);
     return;
   }
@@ -966,9 +969,10 @@ linuxdvb_frontend_monitor ( void *aux )
       tvh_mutex_unlock(&lfe->lfe_dvr_lock);
 
       /* Table handlers */
+      tvh_mutex_lock(&global_lock);//DEEPTHO
       psi_tables_install((mpegts_input_t *)lfe, mm,
                          ((dvb_mux_t *)mm)->lm_tuning.dmc_fe_delsys);
-
+      tvh_mutex_unlock(&global_lock); //DEEPTHO
     /* Re-arm (quick) */
     } else {
       mtimer_arm_rel(&lfe->lfe_monitor_timer, linuxdvb_frontend_monitor,
@@ -1241,6 +1245,16 @@ linuxdvb_frontend_monitor ( void *aux )
   }
 }
 
+static void
+linuxdvb_frontend_monitor( void *aux )
+{
+  tvh_mutex_unlock(&global_lock);
+  linuxdvb_frontend_monitor_(aux);
+  tvh_mutex_lock(&global_lock);
+
+}
+
+
 typedef struct linuxdvb_pid {
   int fd;
   int pid;