Framework laptops are often mentioned since they chose components that should work well with upstream kernels. So no funny wifi chips or something. Also, as a bonus, easy to take apart and replace parts that you can order separately. https://frame.work/
Tuxedo Computers for sure. KDE also wants to partner with Framework, and Slimbook already makes KDE laptops.
Lenovo, Dell and HP are terrible IMO. Not only are the not Linux focused but also terrible companies. The Linux laptops they make are just to target developers meaning: fix your own software issues 😒 Dell for example has had webcam issues on Linux for ages with their MIPS or whatever cameras and simply don't give two shits.
Support a real Linux laptop vendor like the one mentioned above. Not only do they contribute to Linux and open source in general, but I find they are more accessible in terms of support, and they do pretty well in terms of making Linux work on their hardware.
ThinkPad or framework
One channel I follow on YouTube for Linux news "The Linux Experiment" has Tuxedo Computers as a sponsor. They build PCs and Laptops that are optimized for Linux.
Otherwise I'd recommend a Lenovo. I think they're pretty good with Linux if I'm not mistaken.
Sorry but I have a yoga running Kubuntu. I can't make hibernate work and "sleep" will kill my battery in less than 24 hours.
System76 is also a good option especially if you're american. They have a broader option set too
On power management though I'm umsure if you'll get the results you want. It's hell on windows, hell on Linux, and only within the past few years improved on Mac.
You may find better suspend on a laptop made for Linux though but I don't want to get your hopes up too greatly.
Other options for good laptops though are starlabs and tuxedo computers. On tuxedo make sure you get the right language and layout for your country
On framework I can personally vouch for them. I have had great experiences with the 13 and there's a dedicated community happy to help on their forum. Friendly people.
As for slimbook friends of mine who have them have had good experiances too
yeah thanks, i haven't seen starlabs, and i am in Australia.
thats sad news about power management. I dont mind that it sucks power when in use, but when the lid closes, it should be in something equivalent to hibernate.
US only and OP seems to be presumably from Australia.
Was going to recommend this. I have an Ir16 Gen2, it is great. My only complaint is the comically ginormous massive excessive touchpad and lack of physical touchpad buttons. KFocus is good to go, the way you'd expect, with all wifi/bluetooth/sleep/power settings
KDE
KDE is an international technology team creating user-friendly free and open source software for desktop and portable computing. KDE’s software runs on GNU/Linux, BSD and other operating systems, including Windows.
Plasma 6 Bugs
If you encounter a bug, proceed to https://bugs.kde.org, check whether it has been reported.
If it hasn't, report it yourself.
PLEASE THINK CAREFULLY BEFORE POSTING HERE.
Developers do not look for reports on social media, so they will not see it and all it does is clutter up the feed.