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Laptop doesn't wake from sleep Ubuntu 21.10

tr flag

A few months ago I installed Ubuntu 21.10 on a Lenovo Yoga 6. Within the last couple weeks the laptop no longer wakes from sleep and I have to hold the power button to shut it down and reboot.

How can I troubleshoot this issue?

Are there specific configs to look at that may have changed with recent OS updates? Could recent Windows updates have made hardware tweaks that are causing this? (I've seen issues where Windows can set hardware level settings that cause havoc with Ubuntu on reboot.)

Related threads focused on older versions of Ubuntu suggest that downgrading the kernel might help. I'd like to avoid this if possible.

Thanks for any pointers.

David avatar
cn flag
To rule out this and future interference from Windows always do a full shut down of windows before starting Ubuntu. Never do a hibernate or sleep on Windows before switching over.
Jeff avatar
mx flag
This guide may help: https://help.ubuntu.com/stable/ubuntu-help/power-suspendfail.html.en
tr flag
I saw that guide previously. It doesn't offer any solutions other than to say hardware may not be supported. No troubleshooting info. I'd really like to know how to troubleshoot the problem.
Score:0
tr flag

Doing more searching, I came across a thread on the Gentoo forum from a user with the same problem as me. They downgraded to an older kernel and were able to resolve their issue that way.

I tried doing the same, downgrading from 5.13.0-28-generic to 5.13.0-27-generic. The older kernel once again allowed my laptop to wake from sleep.

I'll keep using this older kernel until a future kernel release fixes whatever is causing Ubuntu to lose sleep support when paired with this particular laptop. I still don't have an answer as to what the problem is or a good troubleshooting option other than keep searching various forums in the hopes of finding someone with the same issue.

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