[Solved] Lenovo S740 hangs on suspend after switching to kernel 5.3.0-42

[SRS84]

After switching to the 5.3.0-42 kernel my system now hangs on suspend. I've waited for about a minute or so to see if it unfreezes, but each time I've ended up doing a hard shut down.

I seem to remember having a suspend issue when I first installed Mint on this computer, around January of this year, but I can't remember what I did to fix the problem. I've had no problems with suspend since then until upgrading to the new kernel.

Thanks in advance if anyone knows how to fix this.

[MrEen]

Hi SRS84.

I've found that at least 2 users that lost their sound when upgrading to the 5.3.0-42 kernel, also had suspend issues that were solved by the sound fix.

Here's the easy fix for the sound issue that may also fix the suspend issue:

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sudo tee /etc/modprobe.d/alsa-fix.conf <<<'options snd-hda-intel dmic_detect=0'

That fix only applies if while running 5.3.0-42 your dmesg | grep snd output includes this:

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snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, aborting probe

[SRS84]

Hi MrEen,

Thanks again for this suggestion; it did fix the sound issue. And fortunately, after upgrading to the 5.3.0-45 kernel the suspend issue has also gone away.

[MrEen]

That's great SRS84!

I have no idea why that sound fix is also fixing a suspend issue, but you're now the third person to confirm it worked that I'm aware of.