ACPI wakeup woes: PC won't suspend when alarm is set
by mstrimel from LinuxQuestions.org on (#59NFT)
I need to enable ACPI wakeup for my Linux Mint 20 system. I have already gone in the Bios and enabled it.
When I suspend the system from the menu without setting an alarm, it suspends just fine.
However, when I set any kind of alarm using rtcwake, the system will no longer suspend. The screen goes black for a second and comes right back on. As soon as the alarm expires, suspend works again.
Here is an example of the command I am using to set a test alarm:
Code:mary@mythbox:~$ sudo rtcwake -m no -u -s 150I have also tried using the "-m mem" option to immediately suspend the system, as a test. That command returns an error ("rtcwake failed to write") and the system again turns itself back on after suspending for less than one second.
What can I do? I really want to fix it as I am using a lot of power with the system on 100% of the time as a DVR.
When I suspend the system from the menu without setting an alarm, it suspends just fine.
However, when I set any kind of alarm using rtcwake, the system will no longer suspend. The screen goes black for a second and comes right back on. As soon as the alarm expires, suspend works again.
Here is an example of the command I am using to set a test alarm:
Code:mary@mythbox:~$ sudo rtcwake -m no -u -s 150I have also tried using the "-m mem" option to immediately suspend the system, as a test. That command returns an error ("rtcwake failed to write") and the system again turns itself back on after suspending for less than one second.
What can I do? I really want to fix it as I am using a lot of power with the system on 100% of the time as a DVR.