[mythtv-users] TBS 6904SE linux drivers freeze my Ubuntu 22.04 box

[UB40D]

This actually fails before even getting to myth so it's arguably off topic.
But if anyone has recent TBS hardware and a clue, it would be most welcome.

New quad-tuner capture card: TBS 6904 SE
New (recycled) box based on Intel DQ87PG motherboard
Fresh install of Ubuntu 22.04.1 LTS

So far so good. lspci sees the card.

Installation of linux drivers from the TBS website:
https://www.tbsiptv.com/download/common/tbs-open-linux-drivers_v20220424.zip
The make process proceeds to the end without any obvious errors. So does
the installation. It asks for a reboot and then...

Grub shows its menu OK

after that the screen goes black and nothing ever happens. It never even
gets into graphical mode.

I have even wiped the disk, installed Ubuntu 20.04.2 LTS instead, installed
the TBS drivers and got the same result (after installation, black screen
once we go past the grub menu).

Does anyone know what's happening? Has anyone got the TBS 20220424 drivers
work with Ubuntu?

Thank you
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