diff --git a/src/board/system76/darp5/acpi.c b/src/board/system76/darp5/acpi.c
index a67a144..b92aa27 100644
--- a/src/board/system76/darp5/acpi.c
+++ b/src/board/system76/darp5/acpi.c
@@ -1,11 +1,10 @@
 #include <board/acpi.h>
 #include <board/battery.h>
 #include <board/gpio.h>
+#include <board/lid.h>
 #include <board/peci.h>
 #include <common/debug.h>
 
-extern bool lid_wake;
-
 extern uint8_t sci_extra;
 
 uint8_t fcmd = 0;
diff --git a/src/board/system76/darp5/include/board/lid.h b/src/board/system76/darp5/include/board/lid.h
new file mode 100644
index 0000000..90ad66a
--- /dev/null
+++ b/src/board/system76/darp5/include/board/lid.h
@@ -0,0 +1,11 @@
+#ifndef _BOARD_LID_H
+#define _BOARD_LID_H
+
+#include <stdbool.h>
+
+extern bool lid_state;
+extern bool lid_wake;
+
+void lid_event(void);
+
+#endif // _BOARD_LID_H
diff --git a/src/board/system76/darp5/lid.c b/src/board/system76/darp5/lid.c
new file mode 100644
index 0000000..4c11ae4
--- /dev/null
+++ b/src/board/system76/darp5/lid.c
@@ -0,0 +1,45 @@
+#include <arch/delay.h>
+#include <board/gpio.h>
+#include <board/lid.h>
+#include <board/pmc.h>
+#include <common/debug.h>
+
+bool lid_state = true;
+bool lid_wake = false;
+
+void lid_event(void) {
+    static bool send_sci = true;
+
+    // Check if the lid switch has changed
+    bool new = gpio_get(&LID_SW_N);
+    if (new != lid_state) {
+        DEBUG("Lid ");
+        if (new) {
+            DEBUG("open\n");
+
+            if (lid_wake) {
+                gpio_set(&SWI_N, false);
+
+                //TODO: find correct delay
+                delay_ticks(10);
+
+                gpio_set(&SWI_N, true);
+
+                lid_wake = false;
+            }
+        } else {
+            DEBUG("closed\n");
+        }
+
+        // Send SCI
+        send_sci = true;
+    }
+    lid_state = new;
+
+    if (send_sci) {
+        // Send SCI 0x1B for lid event
+        if (pmc_sci(&PMC_1, 0x1B)) {
+            send_sci = false;
+        }
+    }
+}
diff --git a/src/board/system76/darp5/main.c b/src/board/system76/darp5/main.c
index 623ef8f..3b3a8df 100644
--- a/src/board/system76/darp5/main.c
+++ b/src/board/system76/darp5/main.c
@@ -1,6 +1,4 @@
 #include <8051.h>
-#include <stdbool.h>
-#include <stdint.h>
 #include <stdio.h>
 
 #include <arch/arch.h>
@@ -12,6 +10,7 @@
 #include <board/gctrl.h>
 #include <board/kbc.h>
 #include <board/kbscan.h>
+#include <board/lid.h>
 #include <board/peci.h>
 #include <board/pmc.h>
 #include <board/power.h>
@@ -66,47 +65,6 @@ void touchpad_event(struct Ps2 * ps2) {
     }
 }
 
-bool lid_wake = false;
-void lid_event(void) {
-    static bool send_sci = true;
-    static bool last = true;
-
-    // Check if the adapter line goes low
-    bool new = gpio_get(&LID_SW_N);
-    // If there has been a change, print
-    if (new != last) {
-        DEBUG("Lid ");
-        if (new) {
-            DEBUG("open\n");
-
-            if (lid_wake) {
-                gpio_set(&SWI_N, false);
-
-                //TODO: find correct delay
-                delay_ticks(10);
-
-                gpio_set(&SWI_N, true);
-
-                lid_wake = false;
-            }
-        } else {
-            DEBUG("closed\n");
-        }
-
-        // Send SCI
-        send_sci = true;
-    }
-
-    if (send_sci) {
-        // Send SCI 0x1B for lid event
-        if (pmc_sci(&PMC_1, 0x1B)) {
-            send_sci = false;
-        }
-    }
-
-    last = new;
-}
-
 void main(void) {
     init();
 
diff --git a/src/board/system76/darp5/power.c b/src/board/system76/darp5/power.c
index 38f1e06..daeb04b 100644
--- a/src/board/system76/darp5/power.c
+++ b/src/board/system76/darp5/power.c
@@ -2,6 +2,7 @@
 #include <arch/time.h>
 #include <board/battery.h>
 #include <board/gpio.h>
+#include <board/lid.h>
 #include <board/power.h>
 #include <board/pmc.h>
 #include <board/pnp.h>
@@ -207,6 +208,10 @@ void power_event(void) {
     // Read power switch state
     static bool ps_last = true;
     bool ps_new = gpio_get(&PWR_SW_N);
+    // Disable power button if lid is closed and AC is disconnected
+    if (!lid_state && ac_last) {
+        ps_new = true;
+    }
     if (!ps_new && ps_last) {
         // Ensure press is not spurious
         delay_ms(10);
diff --git a/src/board/system76/galp3-c/acpi.c b/src/board/system76/galp3-c/acpi.c
index 62b9799..a5de1d4 100644
--- a/src/board/system76/galp3-c/acpi.c
+++ b/src/board/system76/galp3-c/acpi.c
@@ -2,11 +2,10 @@
 #include <board/battery.h>
 #include <board/gpio.h>
 #include <board/kbled.h>
+#include <board/lid.h>
 #include <board/peci.h>
 #include <common/debug.h>
 
-extern bool lid_wake;
-
 extern uint8_t sci_extra;
 
 static uint8_t fcmd = 0;
diff --git a/src/board/system76/galp3-c/lid.c b/src/board/system76/galp3-c/lid.c
new file mode 100644
index 0000000..4c11ae4
--- /dev/null
+++ b/src/board/system76/galp3-c/lid.c
@@ -0,0 +1,45 @@
+#include <arch/delay.h>
+#include <board/gpio.h>
+#include <board/lid.h>
+#include <board/pmc.h>
+#include <common/debug.h>
+
+bool lid_state = true;
+bool lid_wake = false;
+
+void lid_event(void) {
+    static bool send_sci = true;
+
+    // Check if the lid switch has changed
+    bool new = gpio_get(&LID_SW_N);
+    if (new != lid_state) {
+        DEBUG("Lid ");
+        if (new) {
+            DEBUG("open\n");
+
+            if (lid_wake) {
+                gpio_set(&SWI_N, false);
+
+                //TODO: find correct delay
+                delay_ticks(10);
+
+                gpio_set(&SWI_N, true);
+
+                lid_wake = false;
+            }
+        } else {
+            DEBUG("closed\n");
+        }
+
+        // Send SCI
+        send_sci = true;
+    }
+    lid_state = new;
+
+    if (send_sci) {
+        // Send SCI 0x1B for lid event
+        if (pmc_sci(&PMC_1, 0x1B)) {
+            send_sci = false;
+        }
+    }
+}
diff --git a/src/board/system76/galp3-c/main.c b/src/board/system76/galp3-c/main.c
index a8f4ede..81418d6 100644
--- a/src/board/system76/galp3-c/main.c
+++ b/src/board/system76/galp3-c/main.c
@@ -1,6 +1,4 @@
 #include <8051.h>
-#include <stdbool.h>
-#include <stdint.h>
 #include <stdio.h>
 
 #include <arch/arch.h>
@@ -13,6 +11,7 @@
 #include <board/kbc.h>
 #include <board/kbled.h>
 #include <board/kbscan.h>
+#include <board/lid.h>
 #include <board/peci.h>
 #include <board/pmc.h>
 #include <board/power.h>
@@ -68,47 +67,6 @@ void touchpad_event(struct Ps2 * ps2) {
     }
 }
 
-bool lid_wake = false;
-void lid_event(void) {
-    static bool send_sci = true;
-    static bool last = true;
-
-    // Check if the adapter line goes low
-    bool new = gpio_get(&LID_SW_N);
-    // If there has been a change, print
-    if (new != last) {
-        DEBUG("Lid ");
-        if (new) {
-            DEBUG("open\n");
-
-            if (lid_wake) {
-                gpio_set(&SWI_N, false);
-
-                //TODO: find correct delay
-                delay_ticks(10);
-
-                gpio_set(&SWI_N, true);
-
-                lid_wake = false;
-            }
-        } else {
-            DEBUG("closed\n");
-        }
-
-        // Send SCI
-        send_sci = true;
-    }
-
-    if (send_sci) {
-        // Send SCI 0x1B for lid event
-        if (pmc_sci(&PMC_1, 0x1B)) {
-            send_sci = false;
-        }
-    }
-
-    last = new;
-}
-
 void main(void) {
     init();
 
diff --git a/src/board/system76/galp3-c/power.c b/src/board/system76/galp3-c/power.c
index 38f1e06..daeb04b 100644
--- a/src/board/system76/galp3-c/power.c
+++ b/src/board/system76/galp3-c/power.c
@@ -2,6 +2,7 @@
 #include <arch/time.h>
 #include <board/battery.h>
 #include <board/gpio.h>
+#include <board/lid.h>
 #include <board/power.h>
 #include <board/pmc.h>
 #include <board/pnp.h>
@@ -207,6 +208,10 @@ void power_event(void) {
     // Read power switch state
     static bool ps_last = true;
     bool ps_new = gpio_get(&PWR_SW_N);
+    // Disable power button if lid is closed and AC is disconnected
+    if (!lid_state && ac_last) {
+        ps_new = true;
+    }
     if (!ps_new && ps_last) {
         // Ensure press is not spurious
         delay_ms(10);
diff --git a/src/board/system76/lemp9/acpi.c b/src/board/system76/lemp9/acpi.c
index c78dcd7..af20aad 100644
--- a/src/board/system76/lemp9/acpi.c
+++ b/src/board/system76/lemp9/acpi.c
@@ -2,11 +2,10 @@
 #include <board/battery.h>
 #include <board/gpio.h>
 #include <board/kbled.h>
+#include <board/lid.h>
 #include <board/peci.h>
 #include <common/debug.h>
 
-extern bool lid_wake;
-
 extern uint8_t sci_extra;
 
 static uint8_t fcmd = 0;
diff --git a/src/board/system76/lemp9/include/board/lid.h b/src/board/system76/lemp9/include/board/lid.h
new file mode 100644
index 0000000..90ad66a
--- /dev/null
+++ b/src/board/system76/lemp9/include/board/lid.h
@@ -0,0 +1,11 @@
+#ifndef _BOARD_LID_H
+#define _BOARD_LID_H
+
+#include <stdbool.h>
+
+extern bool lid_state;
+extern bool lid_wake;
+
+void lid_event(void);
+
+#endif // _BOARD_LID_H
diff --git a/src/board/system76/lemp9/lid.c b/src/board/system76/lemp9/lid.c
new file mode 100644
index 0000000..4c11ae4
--- /dev/null
+++ b/src/board/system76/lemp9/lid.c
@@ -0,0 +1,45 @@
+#include <arch/delay.h>
+#include <board/gpio.h>
+#include <board/lid.h>
+#include <board/pmc.h>
+#include <common/debug.h>
+
+bool lid_state = true;
+bool lid_wake = false;
+
+void lid_event(void) {
+    static bool send_sci = true;
+
+    // Check if the lid switch has changed
+    bool new = gpio_get(&LID_SW_N);
+    if (new != lid_state) {
+        DEBUG("Lid ");
+        if (new) {
+            DEBUG("open\n");
+
+            if (lid_wake) {
+                gpio_set(&SWI_N, false);
+
+                //TODO: find correct delay
+                delay_ticks(10);
+
+                gpio_set(&SWI_N, true);
+
+                lid_wake = false;
+            }
+        } else {
+            DEBUG("closed\n");
+        }
+
+        // Send SCI
+        send_sci = true;
+    }
+    lid_state = new;
+
+    if (send_sci) {
+        // Send SCI 0x1B for lid event
+        if (pmc_sci(&PMC_1, 0x1B)) {
+            send_sci = false;
+        }
+    }
+}
diff --git a/src/board/system76/lemp9/main.c b/src/board/system76/lemp9/main.c
index a8f4ede..81418d6 100644
--- a/src/board/system76/lemp9/main.c
+++ b/src/board/system76/lemp9/main.c
@@ -1,6 +1,4 @@
 #include <8051.h>
-#include <stdbool.h>
-#include <stdint.h>
 #include <stdio.h>
 
 #include <arch/arch.h>
@@ -13,6 +11,7 @@
 #include <board/kbc.h>
 #include <board/kbled.h>
 #include <board/kbscan.h>
+#include <board/lid.h>
 #include <board/peci.h>
 #include <board/pmc.h>
 #include <board/power.h>
@@ -68,47 +67,6 @@ void touchpad_event(struct Ps2 * ps2) {
     }
 }
 
-bool lid_wake = false;
-void lid_event(void) {
-    static bool send_sci = true;
-    static bool last = true;
-
-    // Check if the adapter line goes low
-    bool new = gpio_get(&LID_SW_N);
-    // If there has been a change, print
-    if (new != last) {
-        DEBUG("Lid ");
-        if (new) {
-            DEBUG("open\n");
-
-            if (lid_wake) {
-                gpio_set(&SWI_N, false);
-
-                //TODO: find correct delay
-                delay_ticks(10);
-
-                gpio_set(&SWI_N, true);
-
-                lid_wake = false;
-            }
-        } else {
-            DEBUG("closed\n");
-        }
-
-        // Send SCI
-        send_sci = true;
-    }
-
-    if (send_sci) {
-        // Send SCI 0x1B for lid event
-        if (pmc_sci(&PMC_1, 0x1B)) {
-            send_sci = false;
-        }
-    }
-
-    last = new;
-}
-
 void main(void) {
     init();
 
diff --git a/src/board/system76/lemp9/power.c b/src/board/system76/lemp9/power.c
index 38f1e06..daeb04b 100644
--- a/src/board/system76/lemp9/power.c
+++ b/src/board/system76/lemp9/power.c
@@ -2,6 +2,7 @@
 #include <arch/time.h>
 #include <board/battery.h>
 #include <board/gpio.h>
+#include <board/lid.h>
 #include <board/power.h>
 #include <board/pmc.h>
 #include <board/pnp.h>
@@ -207,6 +208,10 @@ void power_event(void) {
     // Read power switch state
     static bool ps_last = true;
     bool ps_new = gpio_get(&PWR_SW_N);
+    // Disable power button if lid is closed and AC is disconnected
+    if (!lid_state && ac_last) {
+        ps_new = true;
+    }
     if (!ps_new && ps_last) {
         // Ensure press is not spurious
         delay_ms(10);