Thanks, Onyxnz.
Have letter from firma.
“Hello, we already had the sufficient SWAP area, but it doesn’t change anything - Suspend doesn’t use SWAP.
And Hibernate works, so it can’t be the SWAP.
I suspect that something goes wrong with the wake-up, but that’s a longer research project.
We’ll include a USB stick, then you’re welcome to reinstall again with a different desktop - but I suspect that the systemd scripts for EndeavourOS are buggy in one or more places.”
No idea. But if I were me, I’m not buying a full price computer that doesn’t work to us full potential. In my head, there’s always something wrong with it.
How big is this possibility?
Not very likely.
EOS is using the systemd package from Arch Linux which tracks farily closely to upstream(systemd).
Hello, what could you say about the info below?
Thaks.
“From https://www.notebooksbilliger.de/.
Reviews. HP 250 G7 6HM84ES 15.6” FHD, Intel i5-8265U,
For Linux users due to lack of (out-of-the-box) support for WLAN and Bluetooth in current distributions
current distributions (openSuSE 15.1, Ubuntu 20.04). WLAN drivers can be replaced by
manual kernel patches or community repositories.
However, this brings new drawbacks with packages that have certain dependencies on distribution kernels (e.g. virtualbox) and possibly kernel updates."
Is this correct?
The answer from Frma ixsoft:
"That depends on which WLAN adapter was installed.
Realtek adapters are buggy in the current kernel (especially rtl8821ce and rtl8822), but this is known.
The driver rtw88 has many bugs, while the additional driver rtl8821ce-dkms (this is the free open source driver from Realtek, but it is not used in the standard kernel) has to be installed subsequently from a repository - this is only possible for experts, most normal users will fail at this at present.
Virtualbox can cause all sorts of problems here, but that’s more due to Virtualbox’s required kernel drivers, which are also grotty (we prefer to use VMWare or KMS, that at least runs).
At HP there were also some known problems with older cheap adapters from Realtek, because only 1x antenna was connected (HP saved the 2nd antenna) and by default the Linux drivers chose the wrong antenna port - but that could be changed by a kernel parameter.
Basically, I can say from experience that the HP hardware in the lower price segment (i.e. up to 1000 euros) is by far not as good as the Asus or Acer hardware. Especially the enforcement of warranty claims against HP is rarely successful (that’s why the HP devices only have a 1-year manufacturer’s warranty).
So my recommendation, buy either Asus, Lenovo or Acer. HP and Fujitsu cause many more problems in my experience - but of course every model is different and exceptions prove the rule.
Lenovo, however, we hardly have anything reasonable available at the moment, so I can only offer Asus or Acer."
Has it really remained so complicated? 
P.S. Had no problem with Medion (14’, 17’), Shuttle.