> -----Original Message----- > From: Ali Ghandour <gandour.ali@xxxxxxxxx> > Sent: Saturday, December 2, 2023 5:24 PM > To: Ping-Ke Shih <pkshih@xxxxxxxxxxx> > Cc: linux-wireless@xxxxxxxxxxxxxxx > Subject: Re: Lenovo LOQ rtw_8852be > > > > > $ lspci -tv > > > > -[0000:00]-+-00.0 Intel Corporation Device a715 > >> Can I know the type of your platoform Lenovo LOQ? Is it a regular notebook computer? > > LOQ 15IRH8 - Type 82XV > I am using a dual boot with Windows and Ubuntu 22.04 I still can't find information about the device a715 that I also can't find this ID in kernel source code. I will dig kernel further when I have free time. > > >> The PCI EXT capabilities locate from 100h. Not sure if host controller driver limits to display them? > I did not get your question. Can you say it again please? I meant offset 100h of PCI configuration space is a standard area [1]. "PCI Express extends the Configuration Space to 4096 bytes per Function as compared to 256 bytes allowed by PCI Local Bus Specification. PCI Express Configuration Space is divided into a PCI 3.0 compatible region, which consists of the first 256 bytes of a Function’s Configuration Space, and a PCI Express Extended Configuration Space which consists of the remaining Configuration Space 5 (see Figure 7-3)." I don't know why the PCI controller in your platform doesn't recognize the region, and then _possibly_ cause driver failed to access 719h. [1] https://blog.csdn.net/huangkangying/article/details/50570612
