Q: Computer wakes from sleep repeatedly during night
My desktop for some reason is waking every night repeatedly starting a 2 in the morning.
This goes on for 2:30 hours before it stops.
Turning off airport, unplugging HDs doesn't have an effect. Sharing is off, and nothing is scheduled, and wake for network access is also turned off.
My machine is a iMac (27-inch, Mid 2010) running Yosemite 10.10.5
Does anyone have an idea what could still cause this incredibly annoying behavior?
21.09.16 02:00:00.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:00:00.000 kernel[0]: RTC: Maintenance 2016/9/21 00:00:00, sleep 2016/9/20 22:51:47
21.09.16 02:01:53.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:01:53.000 kernel[0]: RTC: Maintenance 2016/9/21 00:01:53, sleep 2016/9/21 00:00:55
21.09.16 02:03:46.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:03:46.000 kernel[0]: RTC: Maintenance 2016/9/21 00:03:46, sleep 2016/9/21 00:02:48
21.09.16 02:05:39.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:05:39.000 kernel[0]: RTC: Maintenance 2016/9/21 00:05:39, sleep 2016/9/21 00:04:41
21.09.16 02:07:32.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:07:32.000 kernel[0]: RTC: Maintenance 2016/9/21 00:07:32, sleep 2016/9/21 00:06:34
21.09.16 02:09:25.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:09:25.000 kernel[0]: RTC: Maintenance 2016/9/21 00:09:25, sleep 2016/9/21 00:08:27
21.09.16 02:11:18.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:11:18.000 kernel[0]: RTC: Maintenance 2016/9/21 00:11:18, sleep 2016/9/21 00:10:20
21.09.16 02:13:11.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:13:11.000 kernel[0]: RTC: Maintenance 2016/9/21 00:13:11, sleep 2016/9/21 00:12:13
21.09.16 02:15:04.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:15:04.000 kernel[0]: RTC: Maintenance 2016/9/21 00:15:04, sleep 2016/9/21 00:14:06
21.09.16 02:16:57.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:16:57.000 kernel[0]: RTC: Maintenance 2016/9/21 00:16:57, sleep 2016/9/21 00:15:59
21.09.16 02:18:50.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:18:50.000 kernel[0]: RTC: Maintenance 2016/9/21 00:18:50, sleep 2016/9/21 00:17:52
21.09.16 02:20:43.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:20:43.000 kernel[0]: RTC: Maintenance 2016/9/21 00:20:43, sleep 2016/9/21 00:19:45
21.09.16 02:22:36.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:22:36.000 kernel[0]: RTC: Maintenance 2016/9/21 00:22:36, sleep 2016/9/21 00:21:38
21.09.16 02:24:29.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:24:29.000 kernel[0]: RTC: Maintenance 2016/9/21 00:24:29, sleep 2016/9/21 00:23:31
21.09.16 02:26:22.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:26:22.000 kernel[0]: RTC: Maintenance 2016/9/21 00:26:22, sleep 2016/9/21 00:25:24
21.09.16 02:28:15.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:28:15.000 kernel[0]: RTC: Maintenance 2016/9/21 00:28:15, sleep 2016/9/21 00:27:17
21.09.16 02:30:08.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:30:08.000 kernel[0]: RTC: Maintenance 2016/9/21 00:30:08, sleep 2016/9/21 00:29:10
21.09.16 02:32:01.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:32:01.000 kernel[0]: RTC: Maintenance 2016/9/21 00:32:01, sleep 2016/9/21 00:31:03
21.09.16 02:33:54.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:33:54.000 kernel[0]: RTC: Maintenance 2016/9/21 00:33:54, sleep 2016/9/21 00:32:56
21.09.16 02:35:47.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:35:47.000 kernel[0]: RTC: Maintenance 2016/9/21 00:35:47, sleep 2016/9/21 00:34:49
21.09.16 02:37:40.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:37:40.000 kernel[0]: RTC: Maintenance 2016/9/21 00:37:40, sleep 2016/9/21 00:36:42
21.09.16 02:39:33.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:39:33.000 kernel[0]: RTC: Maintenance 2016/9/21 00:39:33, sleep 2016/9/21 00:38:35
21.09.16 02:41:26.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:41:26.000 kernel[0]: RTC: Maintenance 2016/9/21 00:41:26, sleep 2016/9/21 00:40:28
21.09.16 02:43:19.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:43:19.000 kernel[0]: RTC: Maintenance 2016/9/21 00:43:19, sleep 2016/9/21 00:42:21
21.09.16 02:45:12.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:45:12.000 kernel[0]: RTC: Maintenance 2016/9/21 00:45:12, sleep 2016/9/21 00:44:14
21.09.16 02:47:05.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:47:05.000 kernel[0]: RTC: Maintenance 2016/9/21 00:47:05, sleep 2016/9/21 00:46:07
21.09.16 02:48:58.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:48:58.000 kernel[0]: RTC: Maintenance 2016/9/21 00:48:58, sleep 2016/9/21 00:48:00
21.09.16 02:50:51.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:50:51.000 kernel[0]: RTC: Maintenance 2016/9/21 00:50:51, sleep 2016/9/21 00:49:53
21.09.16 02:52:44.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:52:44.000 kernel[0]: RTC: Maintenance 2016/9/21 00:52:44, sleep 2016/9/21 00:51:46
21.09.16 02:54:37.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:54:37.000 kernel[0]: RTC: Maintenance 2016/9/21 00:54:37, sleep 2016/9/21 00:53:39
21.09.16 02:56:30.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:56:30.000 kernel[0]: RTC: Maintenance 2016/9/21 00:56:30, sleep 2016/9/21 00:55:32
21.09.16 02:58:23.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 02:58:23.000 kernel[0]: RTC: Maintenance 2016/9/21 00:58:23, sleep 2016/9/21 00:57:25
21.09.16 03:00:16.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:00:16.000 kernel[0]: RTC: Maintenance 2016/9/21 01:00:16, sleep 2016/9/21 00:59:19
21.09.16 03:02:09.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:02:09.000 kernel[0]: RTC: Maintenance 2016/9/21 01:02:09, sleep 2016/9/21 01:01:11
21.09.16 03:04:02.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:04:02.000 kernel[0]: RTC: Maintenance 2016/9/21 01:04:02, sleep 2016/9/21 01:03:04
21.09.16 03:05:55.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:05:55.000 kernel[0]: RTC: Maintenance 2016/9/21 01:05:55, sleep 2016/9/21 01:04:57
21.09.16 03:07:48.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:07:48.000 kernel[0]: RTC: Maintenance 2016/9/21 01:07:48, sleep 2016/9/21 01:06:50
21.09.16 03:09:41.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:09:41.000 kernel[0]: RTC: Maintenance 2016/9/21 01:09:41, sleep 2016/9/21 01:08:43
21.09.16 03:11:34.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:11:34.000 kernel[0]: RTC: Maintenance 2016/9/21 01:11:34, sleep 2016/9/21 01:10:36
21.09.16 03:13:27.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:13:27.000 kernel[0]: RTC: Maintenance 2016/9/21 01:13:27, sleep 2016/9/21 01:12:29
21.09.16 03:15:20.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:15:20.000 kernel[0]: RTC: Maintenance 2016/9/21 01:15:20, sleep 2016/9/21 01:14:22
21.09.16 03:17:13.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:17:13.000 kernel[0]: RTC: Maintenance 2016/9/21 01:17:13, sleep 2016/9/21 01:16:15
21.09.16 03:19:06.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:19:06.000 kernel[0]: RTC: Maintenance 2016/9/21 01:19:06, sleep 2016/9/21 01:18:08
21.09.16 03:20:59.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:20:59.000 kernel[0]: RTC: Maintenance 2016/9/21 01:20:59, sleep 2016/9/21 01:20:01
21.09.16 03:22:52.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:22:52.000 kernel[0]: RTC: Maintenance 2016/9/21 01:22:52, sleep 2016/9/21 01:21:54
21.09.16 03:24:45.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:24:45.000 kernel[0]: RTC: Maintenance 2016/9/21 01:24:45, sleep 2016/9/21 01:23:47
21.09.16 03:26:38.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:26:38.000 kernel[0]: RTC: Maintenance 2016/9/21 01:26:38, sleep 2016/9/21 01:25:40
21.09.16 03:28:31.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:28:31.000 kernel[0]: RTC: Maintenance 2016/9/21 01:28:31, sleep 2016/9/21 01:27:33
21.09.16 03:30:24.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:30:24.000 kernel[0]: RTC: Maintenance 2016/9/21 01:30:24, sleep 2016/9/21 01:29:26
21.09.16 03:32:17.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:32:17.000 kernel[0]: RTC: Maintenance 2016/9/21 01:32:17, sleep 2016/9/21 01:31:19
21.09.16 03:34:11.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:34:11.000 kernel[0]: RTC: Maintenance 2016/9/21 01:34:11, sleep 2016/9/21 01:33:13
21.09.16 03:36:05.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:36:05.000 kernel[0]: RTC: Maintenance 2016/9/21 01:36:05, sleep 2016/9/21 01:35:07
21.09.16 03:37:58.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:37:58.000 kernel[0]: RTC: Maintenance 2016/9/21 01:37:58, sleep 2016/9/21 01:37:00
21.09.16 03:39:52.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:39:52.000 kernel[0]: RTC: Maintenance 2016/9/21 01:39:52, sleep 2016/9/21 01:38:53
21.09.16 03:41:46.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:41:46.000 kernel[0]: RTC: Maintenance 2016/9/21 01:41:46, sleep 2016/9/21 01:40:49
21.09.16 03:43:40.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:43:40.000 kernel[0]: RTC: Maintenance 2016/9/21 01:43:40, sleep 2016/9/21 01:42:42
21.09.16 03:45:34.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:45:34.000 kernel[0]: RTC: Maintenance 2016/9/21 01:45:34, sleep 2016/9/21 01:44:36
21.09.16 03:47:28.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:47:28.000 kernel[0]: RTC: Maintenance 2016/9/21 01:47:28, sleep 2016/9/21 01:46:30
21.09.16 03:49:22.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:49:22.000 kernel[0]: RTC: Maintenance 2016/9/21 01:49:22, sleep 2016/9/21 01:48:24
21.09.16 03:51:16.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:51:16.000 kernel[0]: RTC: Maintenance 2016/9/21 01:51:16, sleep 2016/9/21 01:50:18
21.09.16 03:53:10.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:53:10.000 kernel[0]: RTC: Maintenance 2016/9/21 01:53:10, sleep 2016/9/21 01:52:12
21.09.16 03:55:03.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:55:03.000 kernel[0]: RTC: Maintenance 2016/9/21 01:55:03, sleep 2016/9/21 01:54:05
21.09.16 03:56:56.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:56:56.000 kernel[0]: RTC: Maintenance 2016/9/21 01:56:56, sleep 2016/9/21 01:55:58
21.09.16 03:58:50.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 03:58:50.000 kernel[0]: RTC: Maintenance 2016/9/21 01:58:50, sleep 2016/9/21 01:57:52
21.09.16 04:00:44.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 04:00:44.000 kernel[0]: RTC: Maintenance 2016/9/21 02:00:44, sleep 2016/9/21 01:59:46
21.09.16 04:02:38.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 04:02:38.000 kernel[0]: RTC: Maintenance 2016/9/21 02:02:38, sleep 2016/9/21 02:01:40
21.09.16 04:04:31.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 04:04:31.000 kernel[0]: RTC: Maintenance 2016/9/21 02:04:31, sleep 2016/9/21 02:03:33
21.09.16 04:06:25.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 04:06:25.000 kernel[0]: RTC: Maintenance 2016/9/21 02:06:25, sleep 2016/9/21 02:05:27
21.09.16 04:08:19.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 04:08:19.000 kernel[0]: RTC: Maintenance 2016/9/21 02:08:19, sleep 2016/9/21 02:07:21
21.09.16 04:10:12.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 04:10:12.000 kernel[0]: RTC: Maintenance 2016/9/21 02:10:12, sleep 2016/9/21 02:09:14
21.09.16 04:12:06.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 04:12:06.000 kernel[0]: RTC: Maintenance 2016/9/21 02:12:06, sleep 2016/9/21 02:11:08
21.09.16 04:14:00.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 04:14:00.000 kernel[0]: RTC: Maintenance 2016/9/21 02:14:00, sleep 2016/9/21 02:13:02
21.09.16 04:15:54.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 04:15:54.000 kernel[0]: RTC: Maintenance 2016/9/21 02:15:54, sleep 2016/9/21 02:14:56
21.09.16 04:17:47.000 kernel[0]: Wake reason: RTC (Alarm)
21.09.16 04:17:47.000 kernel[0]: RTC: Maintenance 2016/9/21 02:17:47, sleep 2016/9/21 02:16:49
iMac, OS X Yosemite (10.10.5)
Posted on Sep 20, 2016 10:14 PM