CentOS

According to the FAQ there's a 'bump topic' button, but I can't seem to find it, so here we are.

Does anyone have any insights into what might be causing this?

I'm still at a loss on this. When I do lspci -vvv everything seems to be correct: 02:00.0 Serial controller: Commtech, Inc. 422/4-PCIe Serial PCIe Adapter [Fastcom] (rev 03) (prog-if 02 [16550]) Physical Slot: 1-1 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- Fa...

I'm at a bit of a loss. If I understand the Makefiles, CONFIG_SERIAL_8250_EXAR should be enabling the exar part of the serial drivers, but the kernel doesn't seem to even notice the UARTs on our card. Even though it clearly and correctly identifies the card as our card (Commtech, Inc. 422/4-PCIe Ser...

The card is 18f7:0020. We are the driver manufacturers for this card, and yes, the final drivers weren't installed. From my (limited) understanding, the core functionality such as read/write should be handled by the default serial drivers, while our particular drivers provide support for functionali...

Hello! My Linux knowledge is weak, passable at best, so please bare with me. I'm currently supporting/maintaining the drivers for some of our devices (the 422/x-PCIe series, Vendor ID 18f7 and PCI IDs 0020 and 0021) and I've found that on CentOS 8 the serial ports no longer show up. The cards still ...