what should i consider in BIOS settings to run qubes on a Lenovo T490s?
I disabled the secure boot option and other options are left untouched (default).
There are some other issues (PCI errors) - but there seems to be a lot of related topics in the forum - i will read them first.
You have to turn on “virtualization” and “Intel VT-d” (if you have an Intel CPU). Well documented. Check also the HCL (Hardware Compatibility List) - maybe your laptop is there and you get other people’s experiences without having to rediscover the wheel. Good luck!