Why do I have "Unassigned class [ff00]: Realtek Semiconductor"?

It seems that everything in my Ubuntu is working properly. I just noticed that when I use

lspci 

The last three lines are,

01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188EE Wireless Network Adapter (rev 01) 05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller (rev 07`) 06:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01) 

Why does the last line say "Unassigned class [ff00]" ? Is there anything that I need to install or assign?

2 Answers

Try something as simple as:

modprobe -r rtsx_pci modprobe rtsx_pci 

This is because rtsx_pci module manages the card reader. Sometimes it doesn't work properly on boot.

There is nothing to worry about. This PCI device is a Card reader.

There is no special class for these devices in PCI, so it is shown as Unassigned class.