diff --git a/src/board/system76/darp5/include/board/power.h b/src/board/system76/darp5/include/board/power.h
index 504ed64..9c29f84 100644
--- a/src/board/system76/darp5/include/board/power.h
+++ b/src/board/system76/darp5/include/board/power.h
@@ -1,6 +1,17 @@
 #ifndef _BOARD_POWER_H
 #define _BOARD_POWER_H
 
+enum PowerState {
+    POWER_STATE_DEFAULT,
+    POWER_STATE_DS5,
+    POWER_STATE_S5,
+    POWER_STATE_DS3,
+    POWER_STATE_S3,
+    POWER_STATE_S0,
+};
+
+extern enum PowerState power_state;
+
 void power_event(void);
 
 #endif // _BOARD_POWER_H
diff --git a/src/board/system76/darp5/kbscan.c b/src/board/system76/darp5/kbscan.c
index 9659320..0257d89 100644
--- a/src/board/system76/darp5/kbscan.c
+++ b/src/board/system76/darp5/kbscan.c
@@ -5,6 +5,7 @@
 #include <board/kbscan.h>
 #include <board/keymap.h>
 #include <board/pmc.h>
+#include <board/power.h>
 #include <common/debug.h>
 
 bool kbscan_enabled = false;
@@ -29,6 +30,13 @@ void kbscan_init(void) {
 #define DEBOUNCE_DELAY 20
 
 bool kbscan_press(uint16_t key, bool pressed, uint8_t * layer) {
+    if (pressed &&
+        (power_state == POWER_STATE_S3 || power_state == POWER_STATE_DS3)) {
+        gpio_set(&SWI_N, false);
+        delay_ticks(10); //TODO: find correct delay
+        gpio_set(&SWI_N, true);
+    }
+
     switch (key & KT_MASK) {
         case (KT_NORMAL):
             if (kbscan_enabled) {
diff --git a/src/board/system76/darp5/pmc.c b/src/board/system76/darp5/pmc.c
index 0db98f8..8387b6d 100644
--- a/src/board/system76/darp5/pmc.c
+++ b/src/board/system76/darp5/pmc.c
@@ -63,7 +63,7 @@ void pmc_event(struct Pmc * pmc) {
     if (sts & PMC_STS_IBF) {
         uint8_t data = pmc_read(pmc);
         if (sts & PMC_STS_CMD) {
-            DEBUG("pmc cmd: %02X\n", data);
+            TRACE("pmc cmd: %02X\n", data);
 
             state = PMC_STATE_DEFAULT;
             switch (data) {
@@ -78,7 +78,7 @@ void pmc_event(struct Pmc * pmc) {
                 pmc_sci_interrupt();
                 break;
             case 0x82:
-                DEBUG("  burst enable\n");
+                TRACE("  burst enable\n");
                 // Set burst bit
                 pmc_set_status(pmc, sts | (1 << 4));
                 // Send acknowledgement byte
@@ -86,14 +86,14 @@ void pmc_event(struct Pmc * pmc) {
                 state_data = 0x90;
                 break;
             case 0x83:
-                DEBUG("  burst disable\n");
+                TRACE("  burst disable\n");
                 // Clear burst bit
                 pmc_set_status(pmc, sts & ~(1 << 4));
                 // Send SCI for IBF=0
                 pmc_sci_interrupt();
                 break;
             case 0x84:
-                DEBUG("  SCI queue\n");
+                TRACE("  SCI queue\n");
                 // Clear SCI pending bit
                 pmc_set_status(pmc, sts & ~(1 << 5));
                 // Send SCI queue
@@ -104,13 +104,13 @@ void pmc_event(struct Pmc * pmc) {
                 break;
 
             case 0xEC:
-                DEBUG("  scratch rom\n");
+                TRACE("  scratch rom\n");
                 pmc_write(pmc, 0x76);
                 scratch_trampoline();
                 break;
             }
         } else {
-            DEBUG("pmc data: %02X\n", data);
+            TRACE("pmc data: %02X\n", data);
 
             switch (state) {
             case PMC_STATE_ACPI_READ:
@@ -141,7 +141,7 @@ void pmc_event(struct Pmc * pmc) {
     if (!(sts & PMC_STS_OBF)) {
         switch (state) {
             case PMC_STATE_WRITE:
-                DEBUG("pmc write: %02X\n", state_data);
+                TRACE("pmc write: %02X\n", state_data);
                 state = PMC_STATE_DEFAULT;
                 pmc_write(pmc, state_data);
                 // Send SCI for OBF=1
diff --git a/src/board/system76/darp5/power.c b/src/board/system76/darp5/power.c
index 21898c2..00492aa 100644
--- a/src/board/system76/darp5/power.c
+++ b/src/board/system76/darp5/power.c
@@ -51,6 +51,8 @@ extern uint8_t main_cycle;
 // RSMRST# de-assertion to SUSPWRDNACK valid
 #define tPLT01 delay_ms(200)
 
+enum PowerState power_state = POWER_STATE_DEFAULT;
+
 // Enable deep sleep well power
 void power_on_ds5() {
     DEBUG("%02X: power_on_ds5\n", main_cycle);
@@ -80,6 +82,8 @@ void power_on_ds5() {
     // tPCH04 is the ideal delay
     tPCH04;
 #endif // DEEP_SX
+
+    power_state = POWER_STATE_DS5;
 }
 
 // Enable S5 power
@@ -126,6 +130,8 @@ void power_on_s5() {
     // Extra wait - TODO remove
     delay_ms(200);
 #endif // DEEP_SX
+
+    power_state = POWER_STATE_S5;
 }
 
 void power_off_s5() {
@@ -157,24 +163,14 @@ void power_off_s5() {
     gpio_set(&PCH_DPWROK_EC, false);
     tPCH14;
 #endif // DEEP_SX
+
+    power_state = POWER_STATE_DS5;
 }
 
-enum PowerState {
-    POWER_STATE_DEFAULT,
-    POWER_STATE_DS5,
-    POWER_STATE_S5,
-    POWER_STATE_DS3,
-    POWER_STATE_S3,
-    POWER_STATE_S0,
-};
-
 void power_event(void) {
-    static enum PowerState state = POWER_STATE_DEFAULT;
-
     // Always switch to ds5 if EC is running
-    if (state == POWER_STATE_DEFAULT) {
+    if (power_state == POWER_STATE_DEFAULT) {
         power_on_ds5();
-        state = POWER_STATE_DS5;
     }
 
     // Check if the adapter line goes low
@@ -223,9 +219,8 @@ void power_event(void) {
             DEBUG("%02X: Power switch press\n", main_cycle);
 
             // Enable S5 power if necessary, before sending PWR_BTN
-            if (state == POWER_STATE_DS5) {
+            if (power_state == POWER_STATE_DS5) {
                 power_on_s5();
-                state = POWER_STATE_S5;
             }
         }
     }
@@ -286,6 +281,8 @@ void power_event(void) {
         //TODO: reset KBC and touchpad states
 
         kbled_reset();
+
+        power_state = POWER_STATE_S0;
     }
     rst_last = rst_new;
 
@@ -331,9 +328,9 @@ void power_event(void) {
 
         if (s4_new) {
             DEBUG("%02X: entering S3 state\n", main_cycle);
-        } else if (state == POWER_STATE_S5) {
+            power_state = POWER_STATE_S3;
+        } else if (power_state == POWER_STATE_S5) {
             power_off_s5();
-            state = POWER_STATE_DS5;
         }
     }
     #if LEVEL >= LEVEL_DEBUG
diff --git a/src/board/system76/galp3-c/include/board/power.h b/src/board/system76/galp3-c/include/board/power.h
index 504ed64..9c29f84 100644
--- a/src/board/system76/galp3-c/include/board/power.h
+++ b/src/board/system76/galp3-c/include/board/power.h
@@ -1,6 +1,17 @@
 #ifndef _BOARD_POWER_H
 #define _BOARD_POWER_H
 
+enum PowerState {
+    POWER_STATE_DEFAULT,
+    POWER_STATE_DS5,
+    POWER_STATE_S5,
+    POWER_STATE_DS3,
+    POWER_STATE_S3,
+    POWER_STATE_S0,
+};
+
+extern enum PowerState power_state;
+
 void power_event(void);
 
 #endif // _BOARD_POWER_H
diff --git a/src/board/system76/galp3-c/kbscan.c b/src/board/system76/galp3-c/kbscan.c
index a14be2d..f19e54e 100644
--- a/src/board/system76/galp3-c/kbscan.c
+++ b/src/board/system76/galp3-c/kbscan.c
@@ -6,6 +6,7 @@
 #include <board/kbscan.h>
 #include <board/keymap.h>
 #include <board/pmc.h>
+#include <board/power.h>
 #include <common/debug.h>
 
 bool kbscan_enabled = false;
@@ -30,6 +31,13 @@ void kbscan_init(void) {
 #define DEBOUNCE_DELAY 20
 
 bool kbscan_press(uint16_t key, bool pressed, uint8_t * layer) {
+    if (pressed &&
+        (power_state == POWER_STATE_S3 || power_state == POWER_STATE_DS3)) {
+        gpio_set(&SWI_N, false);
+        delay_ticks(10); //TODO: find correct delay
+        gpio_set(&SWI_N, true);
+    }
+
     switch (key & KT_MASK) {
         case (KT_NORMAL):
             if (kbscan_enabled) {
diff --git a/src/board/system76/galp3-c/pmc.c b/src/board/system76/galp3-c/pmc.c
index 0db98f8..8387b6d 100644
--- a/src/board/system76/galp3-c/pmc.c
+++ b/src/board/system76/galp3-c/pmc.c
@@ -63,7 +63,7 @@ void pmc_event(struct Pmc * pmc) {
     if (sts & PMC_STS_IBF) {
         uint8_t data = pmc_read(pmc);
         if (sts & PMC_STS_CMD) {
-            DEBUG("pmc cmd: %02X\n", data);
+            TRACE("pmc cmd: %02X\n", data);
 
             state = PMC_STATE_DEFAULT;
             switch (data) {
@@ -78,7 +78,7 @@ void pmc_event(struct Pmc * pmc) {
                 pmc_sci_interrupt();
                 break;
             case 0x82:
-                DEBUG("  burst enable\n");
+                TRACE("  burst enable\n");
                 // Set burst bit
                 pmc_set_status(pmc, sts | (1 << 4));
                 // Send acknowledgement byte
@@ -86,14 +86,14 @@ void pmc_event(struct Pmc * pmc) {
                 state_data = 0x90;
                 break;
             case 0x83:
-                DEBUG("  burst disable\n");
+                TRACE("  burst disable\n");
                 // Clear burst bit
                 pmc_set_status(pmc, sts & ~(1 << 4));
                 // Send SCI for IBF=0
                 pmc_sci_interrupt();
                 break;
             case 0x84:
-                DEBUG("  SCI queue\n");
+                TRACE("  SCI queue\n");
                 // Clear SCI pending bit
                 pmc_set_status(pmc, sts & ~(1 << 5));
                 // Send SCI queue
@@ -104,13 +104,13 @@ void pmc_event(struct Pmc * pmc) {
                 break;
 
             case 0xEC:
-                DEBUG("  scratch rom\n");
+                TRACE("  scratch rom\n");
                 pmc_write(pmc, 0x76);
                 scratch_trampoline();
                 break;
             }
         } else {
-            DEBUG("pmc data: %02X\n", data);
+            TRACE("pmc data: %02X\n", data);
 
             switch (state) {
             case PMC_STATE_ACPI_READ:
@@ -141,7 +141,7 @@ void pmc_event(struct Pmc * pmc) {
     if (!(sts & PMC_STS_OBF)) {
         switch (state) {
             case PMC_STATE_WRITE:
-                DEBUG("pmc write: %02X\n", state_data);
+                TRACE("pmc write: %02X\n", state_data);
                 state = PMC_STATE_DEFAULT;
                 pmc_write(pmc, state_data);
                 // Send SCI for OBF=1
diff --git a/src/board/system76/galp3-c/power.c b/src/board/system76/galp3-c/power.c
index daeb04b..a5954a5 100644
--- a/src/board/system76/galp3-c/power.c
+++ b/src/board/system76/galp3-c/power.c
@@ -50,6 +50,8 @@ extern uint8_t main_cycle;
 // RSMRST# de-assertion to SUSPWRDNACK valid
 #define tPLT01 delay_ms(200)
 
+enum PowerState power_state = POWER_STATE_DEFAULT;
+
 // Enable deep sleep well power
 void power_on_ds5() {
     DEBUG("%02X: power_on_ds5\n", main_cycle);
@@ -79,6 +81,8 @@ void power_on_ds5() {
     // tPCH04 is the ideal delay
     tPCH04;
 #endif // DEEP_SX
+
+    power_state = POWER_STATE_DS5;
 }
 
 // Enable S5 power
@@ -125,6 +129,8 @@ void power_on_s5() {
     // Extra wait - TODO remove
     delay_ms(200);
 #endif // DEEP_SX
+
+    power_state = POWER_STATE_S5;
 }
 
 void power_off_s5() {
@@ -156,24 +162,14 @@ void power_off_s5() {
     gpio_set(&PCH_DPWROK_EC, false);
     tPCH14;
 #endif // DEEP_SX
+
+    power_state = POWER_STATE_DS5;
 }
 
-enum PowerState {
-    POWER_STATE_DEFAULT,
-    POWER_STATE_DS5,
-    POWER_STATE_S5,
-    POWER_STATE_DS3,
-    POWER_STATE_S3,
-    POWER_STATE_S0,
-};
-
 void power_event(void) {
-    static enum PowerState state = POWER_STATE_DEFAULT;
-
     // Always switch to ds5 if EC is running
-    if (state == POWER_STATE_DEFAULT) {
+    if (power_state == POWER_STATE_DEFAULT) {
         power_on_ds5();
-        state = POWER_STATE_DS5;
     }
 
     // Check if the adapter line goes low
@@ -222,9 +218,8 @@ void power_event(void) {
             DEBUG("%02X: Power switch press\n", main_cycle);
 
             // Enable S5 power if necessary, before sending PWR_BTN
-            if (state == POWER_STATE_DS5) {
+            if (power_state == POWER_STATE_DS5) {
                 power_on_s5();
-                state = POWER_STATE_S5;
             }
         }
     }
@@ -283,6 +278,8 @@ void power_event(void) {
         // LPC was just reset, enable PNP devices
         pnp_enable();
         //TODO: reset KBC and touchpad states
+
+        power_state = POWER_STATE_S0;
     }
     rst_last = rst_new;
 
@@ -328,9 +325,9 @@ void power_event(void) {
 
         if (s4_new) {
             DEBUG("%02X: entering S3 state\n", main_cycle);
-        } else if (state == POWER_STATE_S5) {
+            power_state = POWER_STATE_S3;
+        } else if (power_state == POWER_STATE_S5) {
             power_off_s5();
-            state = POWER_STATE_DS5;
         }
     }
     #if LEVEL >= LEVEL_DEBUG
diff --git a/src/board/system76/lemp9/include/board/power.h b/src/board/system76/lemp9/include/board/power.h
index 504ed64..9c29f84 100644
--- a/src/board/system76/lemp9/include/board/power.h
+++ b/src/board/system76/lemp9/include/board/power.h
@@ -1,6 +1,17 @@
 #ifndef _BOARD_POWER_H
 #define _BOARD_POWER_H
 
+enum PowerState {
+    POWER_STATE_DEFAULT,
+    POWER_STATE_DS5,
+    POWER_STATE_S5,
+    POWER_STATE_DS3,
+    POWER_STATE_S3,
+    POWER_STATE_S0,
+};
+
+extern enum PowerState power_state;
+
 void power_event(void);
 
 #endif // _BOARD_POWER_H
diff --git a/src/board/system76/lemp9/kbscan.c b/src/board/system76/lemp9/kbscan.c
index a14be2d..f19e54e 100644
--- a/src/board/system76/lemp9/kbscan.c
+++ b/src/board/system76/lemp9/kbscan.c
@@ -6,6 +6,7 @@
 #include <board/kbscan.h>
 #include <board/keymap.h>
 #include <board/pmc.h>
+#include <board/power.h>
 #include <common/debug.h>
 
 bool kbscan_enabled = false;
@@ -30,6 +31,13 @@ void kbscan_init(void) {
 #define DEBOUNCE_DELAY 20
 
 bool kbscan_press(uint16_t key, bool pressed, uint8_t * layer) {
+    if (pressed &&
+        (power_state == POWER_STATE_S3 || power_state == POWER_STATE_DS3)) {
+        gpio_set(&SWI_N, false);
+        delay_ticks(10); //TODO: find correct delay
+        gpio_set(&SWI_N, true);
+    }
+
     switch (key & KT_MASK) {
         case (KT_NORMAL):
             if (kbscan_enabled) {
diff --git a/src/board/system76/lemp9/pmc.c b/src/board/system76/lemp9/pmc.c
index 0db98f8..8387b6d 100644
--- a/src/board/system76/lemp9/pmc.c
+++ b/src/board/system76/lemp9/pmc.c
@@ -63,7 +63,7 @@ void pmc_event(struct Pmc * pmc) {
     if (sts & PMC_STS_IBF) {
         uint8_t data = pmc_read(pmc);
         if (sts & PMC_STS_CMD) {
-            DEBUG("pmc cmd: %02X\n", data);
+            TRACE("pmc cmd: %02X\n", data);
 
             state = PMC_STATE_DEFAULT;
             switch (data) {
@@ -78,7 +78,7 @@ void pmc_event(struct Pmc * pmc) {
                 pmc_sci_interrupt();
                 break;
             case 0x82:
-                DEBUG("  burst enable\n");
+                TRACE("  burst enable\n");
                 // Set burst bit
                 pmc_set_status(pmc, sts | (1 << 4));
                 // Send acknowledgement byte
@@ -86,14 +86,14 @@ void pmc_event(struct Pmc * pmc) {
                 state_data = 0x90;
                 break;
             case 0x83:
-                DEBUG("  burst disable\n");
+                TRACE("  burst disable\n");
                 // Clear burst bit
                 pmc_set_status(pmc, sts & ~(1 << 4));
                 // Send SCI for IBF=0
                 pmc_sci_interrupt();
                 break;
             case 0x84:
-                DEBUG("  SCI queue\n");
+                TRACE("  SCI queue\n");
                 // Clear SCI pending bit
                 pmc_set_status(pmc, sts & ~(1 << 5));
                 // Send SCI queue
@@ -104,13 +104,13 @@ void pmc_event(struct Pmc * pmc) {
                 break;
 
             case 0xEC:
-                DEBUG("  scratch rom\n");
+                TRACE("  scratch rom\n");
                 pmc_write(pmc, 0x76);
                 scratch_trampoline();
                 break;
             }
         } else {
-            DEBUG("pmc data: %02X\n", data);
+            TRACE("pmc data: %02X\n", data);
 
             switch (state) {
             case PMC_STATE_ACPI_READ:
@@ -141,7 +141,7 @@ void pmc_event(struct Pmc * pmc) {
     if (!(sts & PMC_STS_OBF)) {
         switch (state) {
             case PMC_STATE_WRITE:
-                DEBUG("pmc write: %02X\n", state_data);
+                TRACE("pmc write: %02X\n", state_data);
                 state = PMC_STATE_DEFAULT;
                 pmc_write(pmc, state_data);
                 // Send SCI for OBF=1
diff --git a/src/board/system76/lemp9/power.c b/src/board/system76/lemp9/power.c
index 9ca2950..44c0649 100644
--- a/src/board/system76/lemp9/power.c
+++ b/src/board/system76/lemp9/power.c
@@ -50,6 +50,8 @@ extern uint8_t main_cycle;
 // RSMRST# de-assertion to SUSPWRDNACK valid
 #define tPLT01 delay_ms(200)
 
+enum PowerState power_state = POWER_STATE_DEFAULT;
+
 // Enable deep sleep well power
 void power_on_ds5() {
     DEBUG("%02X: power_on_ds5\n", main_cycle);
@@ -79,6 +81,8 @@ void power_on_ds5() {
     // tPCH04 is the ideal delay
     tPCH04;
 #endif // DEEP_SX
+
+    power_state = POWER_STATE_DS5;
 }
 
 // Enable S5 power
@@ -151,6 +155,8 @@ void power_on_s5() {
     // Extra wait - TODO remove
     delay_ms(200);
 #endif // DEEP_SX
+
+    power_state = POWER_STATE_S5;
 }
 
 void power_off_s5() {
@@ -182,24 +188,14 @@ void power_off_s5() {
     gpio_set(&PCH_DPWROK_EC, false);
     tPCH14;
 #endif // DEEP_SX
+
+    power_state = POWER_STATE_DS5;
 }
 
-enum PowerState {
-    POWER_STATE_DEFAULT,
-    POWER_STATE_DS5,
-    POWER_STATE_S5,
-    POWER_STATE_DS3,
-    POWER_STATE_S3,
-    POWER_STATE_S0,
-};
-
 void power_event(void) {
-    static enum PowerState state = POWER_STATE_DEFAULT;
-
     // Always switch to ds5 if EC is running
-    if (state == POWER_STATE_DEFAULT) {
+    if (power_state == POWER_STATE_DEFAULT) {
         power_on_ds5();
-        state = POWER_STATE_DS5;
     }
 
     // Check if the adapter line goes low
@@ -248,9 +244,8 @@ void power_event(void) {
             DEBUG("%02X: Power switch press\n", main_cycle);
 
             // Enable S5 power if necessary, before sending PWR_BTN
-            if (state == POWER_STATE_DS5) {
+            if (power_state == POWER_STATE_DS5) {
                 power_on_s5();
-                state = POWER_STATE_S5;
             }
         }
     }
@@ -309,6 +304,8 @@ void power_event(void) {
         // LPC was just reset, enable PNP devices
         pnp_enable();
         //TODO: reset KBC and touchpad states
+
+        power_state = POWER_STATE_S0;
     }
     rst_last = rst_new;
 
@@ -354,9 +351,9 @@ void power_event(void) {
 
         if (s4_new) {
             DEBUG("%02X: entering S3 state\n", main_cycle);
-        } else if (state == POWER_STATE_S5) {
+            power_state = POWER_STATE_S3;
+        } else if (power_state == POWER_STATE_S5) {
             power_off_s5();
-            state = POWER_STATE_DS5;
         }
     }
     #if LEVEL >= LEVEL_DEBUG