diff --git a/README.md b/README.md
index 5d4106a..aec5e69 100644
--- a/README.md
+++ b/README.md
@@ -226,6 +226,11 @@ Work is in progress...
 
 ---
 ## Version history
+#### v0.9.122
+- fixed a bug in the operation of SSD1305 displays
+- fixed bug in operation of LCD1602/2004 displays
+- fixed errors in Serial Monitor output
+
 #### v0.9.110
 - optimization and bug fixes (display, player, netserver, telnet. mqtt)
 
diff --git a/yoRadio/src/core/controls.cpp b/yoRadio/src/core/controls.cpp
index f70b62c..17e5e37 100644
--- a/yoRadio/src/core/controls.cpp
+++ b/yoRadio/src/core/controls.cpp
@@ -472,6 +472,9 @@ void onBtnClick(int id) {
         }
         if (display.mode() == STATIONS) {
           display.putRequest(NEWMODE, PLAYER);
+          #ifdef DSP_LCD
+            delay(200);
+          #endif
           player.sendCommand({PR_PLAY, display.currentPlItem});
         }
         break;
diff --git a/yoRadio/src/core/options.h b/yoRadio/src/core/options.h
index 3a48fe7..b9d1573 100644
--- a/yoRadio/src/core/options.h
+++ b/yoRadio/src/core/options.h
@@ -1,7 +1,7 @@
 #ifndef options_h
 #define options_h
 
-#define YOVERSION "0.9.118"
+#define YOVERSION "0.9.122"
 
 /*******************************************************
 DO NOT EDIT THIS FILE. 
diff --git a/yoRadio/src/displays/displaySSD1305.cpp b/yoRadio/src/displays/displaySSD1305.cpp
index fa783ae..2a900f5 100644
--- a/yoRadio/src/displays/displaySSD1305.cpp
+++ b/yoRadio/src/displays/displaySSD1305.cpp
@@ -13,6 +13,9 @@
 #define LOGO_WIDTH 21
 #define LOGO_HEIGHT 32
 
+#define TAKE_MUTEX() if(player.mutex_pl) xSemaphoreTake(player.mutex_pl, portMAX_DELAY); digitalWrite(TFT_CS, LOW)
+#define GIVE_MUTEX() digitalWrite(TFT_CS, HIGH); if(player.mutex_pl) xSemaphoreGive(player.mutex_pl)
+
 #ifndef DEF_SPI_FREQ
   #define DEF_SPI_FREQ        8000000UL      /*  set it to 0 for system default */
 #endif
@@ -163,7 +166,13 @@ void DspCore::startWrite(void) { }
 void DspCore::endWrite(void) { }
 
 void DspCore::loop(bool force) {
+#if DSP_MODEL==DSP_SSD1305
+  TAKE_MUTEX();
+#endif
   display();
+#if DSP_MODEL==DSP_SSD1305
+  GIVE_MUTEX();
+#endif
   delay(5);
 }
 
@@ -177,15 +186,43 @@ void DspCore::setTextSize(uint8_t s){
 }
 
 void DspCore::flip(){
+#if DSP_MODEL==DSP_SSD1305
+  TAKE_MUTEX();
+#endif
   setRotation(config.store.flipscreen?2:0);
+#if DSP_MODEL==DSP_SSD1305
+  GIVE_MUTEX();
+#endif
 }
 
 void DspCore::invert(){
+#if DSP_MODEL==DSP_SSD1305
+  TAKE_MUTEX();
+#endif
   invertDisplay(config.store.invertdisplay);
+#if DSP_MODEL==DSP_SSD1305
+  GIVE_MUTEX();
+#endif
 }
 
-void DspCore::sleep(void) { oled_command(SSD1305_DISPLAYOFF); }
-void DspCore::wake(void) { oled_command(SSD1305_DISPLAYON); }
+void DspCore::sleep(void) { 
+#if DSP_MODEL==DSP_SSD1305
+  TAKE_MUTEX();
+#endif
+  oled_command(SSD1305_DISPLAYOFF); 
+#if DSP_MODEL==DSP_SSD1305
+  GIVE_MUTEX();
+#endif
+}
+void DspCore::wake(void) {
+#if DSP_MODEL==DSP_SSD1305
+  TAKE_MUTEX();
+#endif
+  oled_command(SSD1305_DISPLAYON);
+#if DSP_MODEL==DSP_SSD1305
+  GIVE_MUTEX();
+#endif
+}
 
 void DspCore::writePixel(int16_t x, int16_t y, uint16_t color) {
   if(_clipping){