Arch Linux

ozooha

Member

Registered: 2009-09-29

Posts: 184

rtcwake does not work on my pc

I wanted to use rtcwake to suspend to RAM and wake it up at particular time.

I tried to test rtcwake by issuing this simple command:

sudo rtcwake -s 90 -m mem

which suspended the PC but did not wake it up after 90 secs.

Below are some of the information which might help:

1) BIOS...i switched the Alarm option to on (and it wakes it up at a particular time).
2) [user@Linux ~]$ dmesg | grep -i rtc
    [    0.494619] RTC time: 15:53:59, date: 12/29/16
    [    1.157968] rtc_cmos 00:02: RTC can wake from S4
    [    1.158086] rtc_cmos 00:02: rtc core: registered rtc_cmos as rtc0
    [    1.158118] rtc_cmos 00:02: alarms up to one month, 242 bytes nvram
    [    1.159634] rtc_cmos 00:02: setting system clock to 2016-12-29 15:54:00 UTC (1483026840)
    [ 4233.799578] rtc_cmos 00:02: System wakeup disabled by ACPI
3)[user@Linux~]$ timedatectl
      Local time: Thu 2016-12-29 11:16:36 EST
      Universal time: Thu 2016-12-29 16:16:36 UTC
      RTC time: Thu 2016-12-29 16:16:35
      Time zone: America/New_York (EST, -0500)
      Network time on: yes
      NTP synchronized: yes
      RTC in local TZ: no
4) description: Desktop Computer
    product: GA-MA790GP-DS4H
    vendor: Gigabyte Technology Co., Ltd.

Please help if you can and also let me know if you require any other information.
OZooHA