03-11-2021, 12:58 PM
The issue with the 32bit UEFI on 64bit capable systems is fairly specific to systems with the intel Baytrail/Cherrytrail Atom CPUs - such as the 100s-11IBY I mentioned (and have posted about in other UEFI related threads). The OP's 100s-14IBR has an intel Braswell CPU and I believe all those have 64bit UEFI.
As best I can tell, there's something very specifically different with the OP's system which is going to require a fairly detailed review using all the details available from tools like lspci to identify. As the Lenovo Windows card reader driver is for Realtek hardware, the intel SD card reader support mentioned in other sources is at best only part of the picture and likely completely misleading. There is a Realtek MMC PCI (as well as USB) driver included in the config as a module. The final answer is I'd guess likely to involve having to specify a kernel option via Grub, but exactly what that would be needs more research.
I'd hoped my 100s-IBY would be close enough hardware-wise to help, but it apparently isn't
As best I can tell, there's something very specifically different with the OP's system which is going to require a fairly detailed review using all the details available from tools like lspci to identify. As the Lenovo Windows card reader driver is for Realtek hardware, the intel SD card reader support mentioned in other sources is at best only part of the picture and likely completely misleading. There is a Realtek MMC PCI (as well as USB) driver included in the config as a module. The final answer is I'd guess likely to involve having to specify a kernel option via Grub, but exactly what that would be needs more research.
I'd hoped my 100s-IBY would be close enough hardware-wise to help, but it apparently isn't