Ubuntu reports in dmesg:
DMI: Hewlett-Packard HP ProDesk 490 G1 MT/18EB, BIOS L02 v02.01 09/22/2013
But I cannot find information about this motherboard anywhere.
I do can check (almost) every single piece of hardware (various chips, the controllers, the ethernet, the audio and so on) but that's not the motherboard. Every motherboard make and model is actually unique.
Whatever tool I'd use I wouldn't get any more details from what the kernel.
I do know what is my hardware (read the quoted text). I simply don't know anything more than the bare name.
I would like to know, for example, the chipset brand/model and other MB-related stuff. No way, no matter the tool I use.
How can I know details about the motherboard I am using without opening the case?
Is there anyone knowing anything about it? Or simply, this cannot be done even in the twenty first century?
hardinfo
, which is mentioned in the duplicate, will give you this information in the Devices => DMI => Board section. – terdon May 14 '14 at 11:55