topic Re:PCI Express Switch Port in Intel® Arc™ Discrete Graphics

PCI Express Switch Port

Foddersin — Fri, 04 Aug 2023 05:23:29 GMT

Hi.

Just wondering if anyone else has noticed and why since driver version 4382 that the PCI Express Downstream and Upstream driver is not being installed on updating to new drivers.

I am using the current beta driver and have seen this with WHQL also.

Running Arc a770 and Windows 11.

Thanks.

Re:PCI Express Switch Port

Jose_Intel — Fri, 04 Aug 2023 19:31:23 GMT

Hello @Foddersin

Thank you for posting on the Intel️® communities.

I am sorry to hear that the PCI Express Downstream and Upstream driver has not being installed, and I’ll be more than willing to help you.

Is it causing any compatibility issue? Please attach a screenshot of the Device Manager where it shows the warning.

Also, in order to have more information about your system, please download, install and run Intel® System Support Utility for Windows. Make sure you check “Everything” before you scan, then save the report and attach it to your response.

Best regards,

Jose B.

Intel Customer Support Technician

Re:PCI Express Switch Port

Jose_Intel — Wed, 09 Aug 2023 14:25:38 GMT

Hello Foddersin

We hope you are doing fine.

Were you able to take the screenshot and generate the required file?

Let us know if you still need assistance.

Best regards,

Jose B.

Intel Customer Support Technician

Re: PCI Express Switch Port

degen — Wed, 09 Aug 2023 22:43:07 GMT

Hello,

I also noticed this behaviour, but I unsure if it is a bug or intended behaviour

If I install Intel Arc driver installer package 31.0.101.4369, the same numbered driver authored by Intel is installed to some PCI Express Downstream Switch Port and PCI Express Upstream Switch Port devices in my Device Manager. This driver has an inf file called memcntrl.inf.

If I install a newer Intel Arc driver installer package, for example 31.0.101.4575, all of the PCI Express Downstream Switch Port and PCI Express Upstream Switch Port devices in my Device Manager are instead authored by Microsoft, with a driver version of 10.0.22621.1778.

Interestingly, it looks as though the newer Intel Arc driver installer package 31.0.101.4575 does try and install PCI Express Downstream Switch Port and PCI Express Upstream Switch Port drivers. I say this because when exploring DriverStore, there is a driver inf file called memcntrl.inf, with a driver version of 31.0.101.4575, but it is not applied to any device. Why does the driver installer package still install a memcntrl.inf file, if Intel's intention was to no longer update the PCI Express Downstream and Upstream Switch Port device drivers?

Again, I am unsure if it is a bug or intended behaviour, but something definitely changed.

Hope this is helpful

Re:PCI Express Switch Port

Jose_Intel — Thu, 10 Aug 2023 21:01:27 GMT

Hello @degen

Thank you for posting on the Intel️® communities.

Please submit a new question on the Intel® ARC™ Graphics community forums, and provide a detailed explanation of the situation to have a more personalized troubleshooting step for your issue. If you'd like, you can try my suggestions from this thread.

Best Regards,

Jose B.

Intel Customer Support Technician

Re:PCI Express Switch Port

Jose_Intel — Fri, 11 Aug 2023 15:46:56 GMT

Hello @Foddersin

We hope you are having a nice day.

We have not heard back from you. So, we will close this thread. If you need any additional information, submit a new question, as this thread will no longer be monitored.

Best regards.

Jose B.

Intel Customer Support Technician.

Re: Re:PCI Express Switch Port

Foddersin — Tue, 03 Oct 2023 09:43:34 GMT

This has been resolved in the recent driver releases.