diff --git a/src/main/native/darwin/sleep_prevention_jni.cc b/src/main/native/darwin/sleep_prevention_jni.cc
index 67c35b201e..e50a58320e 100644
--- a/src/main/native/darwin/sleep_prevention_jni.cc
+++ b/src/main/native/darwin/sleep_prevention_jni.cc
@@ -33,31 +33,13 @@ static int g_sleep_state_stack = 0;
 static IOPMAssertionID g_sleep_state_assertion = kIOPMNullAssertionID;
 
 int portable_push_disable_sleep() {
-  std::lock_guard<std::mutex> lock(g_sleep_state_mutex);
-  BAZEL_CHECK_GE(g_sleep_state_stack, 0);
-  if (g_sleep_state_stack == 0) {
-    BAZEL_CHECK_EQ(g_sleep_state_assertion, kIOPMNullAssertionID);
-    CFStringRef reasonForActivity = CFSTR("build.bazel");
-    IOReturn success = IOPMAssertionCreateWithName(
-        kIOPMAssertionTypeNoIdleSleep, kIOPMAssertionLevelOn, reasonForActivity,
-        &g_sleep_state_assertion);
-    BAZEL_CHECK_EQ(success, kIOReturnSuccess);
-  }
-  g_sleep_state_stack += 1;
-  return 0;
+  // Unreliable, disable for now
+  return -1;
 }
 
 int portable_pop_disable_sleep() {
-  std::lock_guard<std::mutex> lock(g_sleep_state_mutex);
-  BAZEL_CHECK_GT(g_sleep_state_stack, 0);
-  g_sleep_state_stack -= 1;
-  if (g_sleep_state_stack == 0) {
-    BAZEL_CHECK_NE(g_sleep_state_assertion, kIOPMNullAssertionID);
-    IOReturn success = IOPMAssertionRelease(g_sleep_state_assertion);
-    BAZEL_CHECK_EQ(success, kIOReturnSuccess);
-    g_sleep_state_assertion = kIOPMNullAssertionID;
-  }
-  return 0;
+  // Unreliable, disable for now
+  return -1;
 }
 
 }  // namespace blaze_jni
diff --git a/src/main/native/darwin/system_suspension_monitor_jni.cc b/src/main/native/darwin/system_suspension_monitor_jni.cc
index 3483aa7935..51782986ec 100644
--- a/src/main/native/darwin/system_suspension_monitor_jni.cc
+++ b/src/main/native/darwin/system_suspension_monitor_jni.cc
@@ -83,10 +83,7 @@ void portable_start_suspend_monitoring() {
     // Register to receive system sleep notifications.
     // Testing needs to be done manually. Use the logging to verify
     // that sleeps are being caught here.
-    suspend_state.connect_port = IORegisterForSystemPower(
-        &suspend_state, &notifyPortRef, SleepCallBack, &notifierObject);
-    BAZEL_CHECK_NE(suspend_state.connect_port, MACH_PORT_NULL);
-    IONotificationPortSetDispatchQueue(notifyPortRef, queue);
+    // XXX: Unreliable, disable for now
 
     // Register to deal with SIGCONT.
     // We register for SIGCONT because we can't catch SIGSTOP.