Arch Linux

TheLudd

Member

Registered: 2021-05-23

Posts: 2

Instant wakeup on suspend - Dell XPS 15 9500

As the headline says, when I run "systemctl suspend" my computer goes into suspend mode but then wakes up right away again.

I have consulted this section of the wiki https://wiki.archlinux.org/title/Power_ … nsistently in order to solve the issue and I have disabled watchdog, yet the problem remains.

I do have some mixed experiences though:

1. I added "nowatchdog" as a parameter to my kernel and this has worked on _one_ occasion. Suspend actually did work but after a reboot, it stopped working again and I have not been able to repeat the success.

2. Even though I used that parameter, I still got watchdog messages on shutdown so now I have instead added "blacklist iTCO_wdt" to "/etc/modprobe.d/nowatchdog.conf" and if I run "wdctl" the output is: "wdctl: No default device is available.: No such file or directory" so I feel I can safely assume it is disabled, yet the problem remains.

Are there any other known issues causing this?

FYI. I do not have a swap partition or file. But since I am not trying to go into hibernate mode I understand this should not be an issue.

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,694

Re: Instant wakeup on suspend - Dell XPS 15 9500

Anything pertinent in the journal?  It may say what woke the system up.

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TheLudd

Member

Registered: 2021-05-23

Posts: 2

Re: Instant wakeup on suspend - Dell XPS 15 9500

Very ironic.
I went about to see what was logged when suspending but before that I did a system upgrade and now suspend works....
I got a new kernel and I am now running 5.12.6-arch1-1, I don't know if that can have fixed something.

I will post back if the problem resurfaces. Will not mark as solved since there is no concrete action here to take in order to solve the problem and I am not convinced it is solved permanently yet.