I’ve tried installing the Nvidia driver
I’ve tried uninstalling uninstalling the Nvidia driver.
I’ve tried unplugging all my USB devices.
I’ve tried unplugging my Corsair lighting.
I’ve tried unplugging my KVM.
I’ve tried all the shell command bash script solutions I can find online regarding resume from sleep and power manager problems.
Somewhere I made a little progress somewhere along the way of trying everything, now it doesn’t hang and lock up when I put my KDE Neon system to sleep… it just immediately wakes back up. Then I went backwards, and now when it wakes immediately back up, the taskmanager bar is gone, and I have to log out, and log back in to get it back.
I keep hoping someday one of these updates will fix the Resume from Suspend / Sleep problems, but they never seem to ever do anything at all.
Well, have you tried increasing swap space? swap used to be critical for hibernation and/or suspend. Perhaps it isn’t as important these days. But, it’s low hanging fruit.. Also, what do your logs tell you? Any clues?
Unfortunately, sleep/resume problems on Linux are often very much device-specific and may involve the kernel as well as the usual Nvidia issues , and not really related to KDE. As for neon, the issues would be similar on Ubuntu LTS.
Now, Ubuntu LTS does not see new kernel versions very often, just every 6 months, so driver and hardware support are not always added all that often. It stinks, and being likely specific to your device makes it harder. Especially as we don’t know that infomratioin, nor specifically what problem you have, and the specific things you have tried.
To be honest, testing out different distros that use different kernel versions might be useful, especially those with newer versions.
Ubuntu 24.04 (and thus KDE neon) should see a kernel bump in July from the current 6.11 to the 6.14 kernel from Ubuntu 25.04, or at least the 6.13 from 24.10, so it might be helpful to try Kubuntu 25.04 and see if things work better there.
There is the mainline app and repository that Ubuntu maintains and I am running 6.15 on Noble. But, yes, I’ve had issues sometimes with some of the versions of the kernel combined with various graphics drivers. I don’t have the latest/greatest video card driver and drop back to Nouveau which I’ve had no problems with as far as newer kernels. But, make sure you back your system up and can restore from the backup via a live OS on a stick or equivalent.
I didn’t suggest Mainline since these vanilla generic builds do not always work with the Nvidia proprietary drivers packages, which is another rabbit hole to fall down.