Verdin imx8m-mini does not return from suspension

Technical Support
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1

I have a Dahlia v1.1B board with the Verdin iMX8M Mini Quad 2GB WB IT V1.1B based. The image used is your Linux Multimedia Reference 6.1.0+build.5 .

When I send the following commands, the system goes to sleep, and stays in this mode. The system does not wake up with the WAKE1_MICO# pin or with a key press from the console.

echo enabled > /sys/class/tty/ttymxc0/power/wakeup;
echo deep > /sys/power/mem_sleep;
echo mem > /sys/power/state

The same thing happens to me when configuring the system to wake up with the RTC alarm after 5 seconds, it remains in suspension mode.

echo +5 > /sys/class/rtc/rtc1/wakealarm; 
echo deep > /sys/power/mem_sleep; 
echo mem > /sys/power/state

I hope someone can help me.

Thanks,
Ferran

2

Hello @ferranmc ,

This feature is not yet implemented in that SoM.

Best regards,
Josep

3

Hi @ferranmc ,

Welcome to the community. Feel free to browse around.

Sorry for our mistake, actually this was implemented in 6.1.

We’ll try to reproduce the issue you reported.

Best Regards
Kevin

4

Hi Ferran,
They have already detected this error and have posted it here:

https://developer-archives.toradex.com/software/linux/release-details?module=Verdin+iMX8M+Mini&key=ELB-4899

If you turn off the ethernet before the suspension the computer returns from the suspension without problems but with the ethernet turned off.

Best regards,
Julián

2 Likes
5

Hi @jbruno ,

Thanks for poitning out the information. :+1:

Did that work for you @ferranmc ?

Best Regards
Kevin

6

Hi @kevin.tx ,

yes, it works for me.

Best Regards,
Ferram

7

Hi @ferranmc ,

Thanks for confirming.

Best Regards
Kevin