Reboots when resuming from suspend

[teo1978]

The strangest thing has started happening almost systematically to me recently:

- I suspend
- I wake up the latpop by shaking the external mouse (note: the fact that shaking the mouse is enough to wake up from suspend is in itself a bug but I got used to it).
- instead of resuming, the computer FUCKING BOOTS

Here's what I upgraded recently:

- At first I was using Ubuntu 16.04; had been using it for years without ever observing this issue a single time
- I upgraded to 20.04 (through 18.04 and 19.10)
- I installed Cinnamon and started using it instead of Gnome
- I installed the kubuntu-desktop package in order to try DKE Plasma Desktop (I first tried by installing the kde-standard package but that's totally broken and logging in with Plasma would result in a screen full of random garbage, so someone suggested I install kubuntu-desktop instead) but I only tried it out; now I'm still always logging in with Cinnamon.

I have only started observing this after I did all that, but I can't tell for sure at what step in the process the issue appeared. It could be that it appeared by upgrading to 20.04, or after installing Cinnamon, and that I only started noticing it now.

I can't tell whether I observe the issue or not when logging in with Gnome or Plasma, because I don't do that often enough, and the issue is randmo: it happens most of the times but I'm not sure it's 100% of the times.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: cinnamon 4.4.8-4
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Uname: Linux 5.4.0-40-generic x86_64
NonfreeKernelModules: lkp_Ubuntu_5_4_0_40_44_generic_69 nvidia
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: X-Cinnamon
Date: Wed Jul 22 10:20:31 2020
InstallationDate: Installed on 2013-10-11 (2475 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
SourcePackage: cinnamon
UpgradeStatus: Upgraded to focal on 2020-07-12 (9 days ago)