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$ uname -r 4.15.0-23-generic $ lsb_release -r Release: 18.04
First happened after upgrading kernel version to
4.15.0-23-generic but when I switched back to
4.15.0-20-generic it worked fine until now (there was an update a few days ago). Now my laptop does not wake up from suspend on either kernel version.
Any suggestions on what to look at / try out? I've tried the suggestions I've been able to find online but to no avail.