RTC Wake Not Working in Mate 20

[tangotoo]

I tested RTC with mate 20 and although the time is set and IRQ shows, the device does not wake. I downgraded to Ubuntu 18.04.3-4.14 minimal and RTC wake works. Is this a known issue? I have not isolated whether the graphical environment is the problem or something else.

[odroid]

The RTC wakeup function was tested on Kernel 4.14, 4.9 and 3.10
https://wiki.odroid.com/odroid-xu4/appl ... rtc_wakeup

If your current kernel version is 5.4, we might need to test and implement the RTC wakeup functionality.

BTW, if you use an eMMC on your XU4, please manually update the boot loader and try testing RTC wakeup again.

Code: Select all

sudo apt install --reinstall uboot
reboot

[tangotoo]

Thanks! I'll try that and report back. Since the clock is operating, I think its just that ACPI isn't looking for the interrupt for some reason. Not sure if that can be added as a kernel module or if it needs to be compiled in.

[odroid]

Also let us know the current running kernel version when you report your test results.
We will get back to you early next week since it is already Friday night here Korea.