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.