[SOLVED] Recompiling Bluetooth driver for Qualcomm WiFi 7 - Bluetooth combo card (QCNCM865) | Arch Linux Community | Page 1

fluid gulch Feb 20, 2025, 5:22 AM

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According to users on this forum https://community.frame.work/t/guide-successful-wi-fi-7-802-11be-on-framework-13-amd-with-qualcomm-qcncm865-and-arch-linux/44723, this combo card I have has many PID's that were never added to btusb.c so it never even gets picked up as a Bluetooth capable device. I spent several hours trying to recompile the latest Zen kernel (6.13.3) just to add my PID to this module but I've never recompiled a kernel before and I keep running into problems.

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/* Qualcomm WCN785x PID 1107 */
    { USB_DEVICE_AND_INTERFACE_INFO(0x17cb, 0x1107, USB_CLASS_WIRELESS, 0xff, 0xff) },

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This is the entry I'd like to add to btusb.c

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Which I have I just can't get it to compile

true cargo Feb 20, 2025, 5:29 AM

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Does it compile without your changes?

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Did you try that first

fluid gulch Feb 20, 2025, 5:31 AM

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I did not, just deleted everything to start with a clean slate, gonna redownload the kernel and try compiling it as is

true cargo Feb 20, 2025, 5:31 AM

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Also that patch was submitted against the mainline kernel, not zen

fluid gulch Feb 20, 2025, 5:32 AM

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Isn't Zen a fork of the mainline kernel?

true cargo Feb 20, 2025, 5:32 AM

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Well yes

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But it's a fork

fluid gulch Feb 20, 2025, 5:33 AM

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I think I get what you're saying

true cargo Feb 20, 2025, 5:43 AM

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So I applied the patch to the latest kernel and it seems like it's working

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But I will write when it's done

fluid gulch Feb 20, 2025, 5:44 AM

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I just don't know what I'm doing lol so this is what I just did

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Cd into kernel source files
cat /proc/config.gz > .config
make menuconfig - Did not touch a thing just saved
make -j$(nproc)
make modules

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That was it, it compiled just fine as far as I can tell, no errors

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btusb.c doesn't seem to have compiled

true cargo Feb 20, 2025, 5:46 AM

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Realistically you want to put the patch in a packagebuild

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So I just finished the compile

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The patch seems fine

fluid gulch Feb 20, 2025, 5:47 AM

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true cargo Realistically you want to put the patch in a packagebuild

I'm sorry I don't really know what this means let alone how I'd go about it

true cargo Feb 20, 2025, 5:47 AM

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fluid gulch I'm sorry I don't really know what this means let alone how I'd go about it

Ok so all arch linux packages are build from a package build

fluid gulch Feb 20, 2025, 5:47 AM

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Okay tracking so far

true cargo Feb 20, 2025, 5:48 AM

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And so are all the kernels arch linux ships

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https://gitlab.archlinux.org/archlinux/packaging/packages/linux

GitLab

Arch Linux / Packaging / Packages / linux · GitLab

Linux packages: linux linux-headers linux-docs

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This is for the vanilla kernel

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You can take this

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Add your patch

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Change the name

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And install it like a package

fluid gulch Feb 20, 2025, 5:49 AM

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fluid gulch ``` /* Qualcomm WCN785x PID 1107 */ { USB_DEVICE_AND_INTERFACE_INFO(0x17cb, ...

I'd add this to PKGBUILD?

true cargo Feb 20, 2025, 5:50 AM

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The PKGBUILD is basically a big bash script that builds the package

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So not directly

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You add a patch

fluid gulch Feb 20, 2025, 5:51 AM

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I'm sorry I still don't understand

true cargo Feb 20, 2025, 5:53 AM

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Give me a sec

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Ah nice

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Ofc there is an arch wiki entry for this

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https://wiki.archlinux.org/title/Kernel/Arch_build_system

Arch build system

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Every day issue I want to patch my kernel

fluid gulch Feb 20, 2025, 5:58 AM

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I read this when Copilot used it as a source but it completely flew over my head I don't get how this adds my cards PID to btusb.c

true cargo Feb 20, 2025, 6:00 AM

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fluid gulch ``` /* Qualcomm WCN785x PID 1107 */ { USB_DEVICE_AND_INTERFACE_INFO(0x17cb, ...

Where exactly did you get that?

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Do you have a source

fluid gulch Feb 20, 2025, 6:01 AM

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I copied one of the entries in btusb.c and modified it to reflect my card

true cargo Feb 20, 2025, 6:01 AM

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So there is no official patch with that in it?

fluid gulch Feb 20, 2025, 6:02 AM

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No, there are patches with other peoples PID's but unfortunately I landed a card with a unique one

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These are some examples I've found

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This person added his own, although I don't understand how

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https://github.com/Doridian/linux-zen-dori/blob/main/qcnm_btusb_ids.patch

GitHub

linux-zen-dori/qcnm_btusb_ids.patch at main · Doridian/linux-zen-dori

Contribute to Doridian/linux-zen-dori development by creating an account on GitHub.

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And someone else was nice enough to collect a few and email a Qualcomm maintainer about it

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https://patchwork.kernel.org/project/bluetooth/patch/20250115-qc_wos_btusb-v1-1-811664ce5d64@quicinc.com/

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But I don't know what this is, I managed to download a .patch file from that link but idk what to do with it, but even if I did my PID is not in that list

true cargo Feb 20, 2025, 6:05 AM

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fluid gulch ``` /* Qualcomm WCN785x PID 1107 */ { USB_DEVICE_AND_INTERFACE_INFO(0x17cb, ...

But this is a totally different format than everything else in the table no?

fluid gulch Feb 20, 2025, 6:05 AM

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I don't think it is, I'll send you more of the file for context

true cargo Feb 20, 2025, 6:07 AM

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Ah you want it in static const struct usb_device_id btusb_table[]

fluid gulch Feb 20, 2025, 6:07 AM

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📎 message.txt

true cargo Feb 20, 2025, 6:07 AM

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Right?

fluid gulch Feb 20, 2025, 6:08 AM

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Yes, would that make my system recognize the card as BT compatible?

true cargo Feb 20, 2025, 6:08 AM

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fluid gulch Yes, would that make my system recognize the card as BT compatible?

I have actually 0% an idea what exactly is going on in the bluetooth kernel module usb driver

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Thats way too low level for what I touch from day to day

fluid gulch Feb 20, 2025, 6:10 AM

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That's what I'm saying lol I been using Linux since 2020 and I've never once had to compile a kernel I've simply been lucky enough to have hardware that is plug and play

true cargo Feb 20, 2025, 6:10 AM

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However the format looks off too

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Where did you pull the USB_CLASS_WIRELESS from?

fluid gulch Feb 20, 2025, 6:11 AM

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I'm not sure, this entry was made by Gemini (ai)

true cargo Feb 20, 2025, 6:12 AM

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empty

fluid gulch Feb 20, 2025, 6:12 AM

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Gave it examples and it spat that out

true cargo Feb 20, 2025, 6:12 AM

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That is 100% wrong

fluid gulch Feb 20, 2025, 6:12 AM

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Just changed the id values and added what it needed to after giving it info on my card

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Damn

true cargo Feb 20, 2025, 6:13 AM

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Like

fluid gulch Feb 20, 2025, 6:13 AM

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Tried to use AI cus I really don't like socializing lol

true cargo Feb 20, 2025, 6:13 AM

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USB_DEVICE_AND_INTERFACE_INFO does not exist in that file

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Ok it does exist in the kernel

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A few levels up

fluid gulch Feb 20, 2025, 6:15 AM

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So it's proper format?

true cargo Feb 20, 2025, 6:15 AM

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No

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Not for that table

fluid gulch Feb 20, 2025, 6:15 AM

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Damn

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How can I fix it?

true cargo Feb 20, 2025, 6:15 AM

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Also whats your underlying issue?

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Because everyone else in that thread is using usb based interfaces

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What does your lsusb output?

fluid gulch Feb 20, 2025, 6:17 AM

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Okay taking a step back, I have a WiFi and Bluetooth combo card, the WiFi works just fine but NOTHING picks up any reference for a bluetooth device

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23:00.0 Network controller [0280]: Qualcomm Technologies, Inc WCN785x Wi-Fi 7(802.11be) 320MHz 2x2 [FastConnect 7800] [17cb:1107] (rev 01)

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That's the card

true cargo Feb 20, 2025, 6:17 AM

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fluid gulch 23:00.0 Network controller [0280]: Qualcomm Technologies, Inc WCN785x Wi-Fi 7(80...

Thats not usb

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Thats not what lsusb outputs

fluid gulch Feb 20, 2025, 6:17 AM

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It's a PCI card, but has a wire that is plugged into the USB headers on my MOBO

true cargo Feb 20, 2025, 6:17 AM

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Post lsusb here

fluid gulch Feb 20, 2025, 6:18 AM

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true cargo Thats not what lsusb outputs

I'll grab that rn

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Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 054c:0ce6 Sony Corp. DualSense wireless controller (PS5)
Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 004: ID 1462:7d14 Micro Star International MYSTIC LIGHT 
Bus 001 Device 007: ID 1532:0511 Razer USA, Ltd RZ19-0229 Gaming Microphone
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 1532:028d Razer USA, Ltd Razer BlackWidow V4 Pro
Bus 003 Device 003: ID 046d:c08b Logitech, Inc. G502 SE HERO Gaming Mouse
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

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Kinda made sense to me after seeing this because there is no mention of my PID in his patch so I figured I had a unique one as well

fluid gulch Feb 20, 2025, 6:21 AM

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fluid gulch https://patchwork.kernel.org/project/bluetooth/patch/20250115-qc_wos_btusb-v1-1-...

The patch I'm referencing

true cargo Feb 20, 2025, 6:21 AM

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fluid gulch It's a PCI card, but has a wire that is plugged into the USB headers on my MOBO

Can you post a pic?

fluid gulch Feb 20, 2025, 6:22 AM

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It's gonna take a minute

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Brb

true cargo Feb 20, 2025, 6:23 AM

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Alright

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I will have to check out now tho

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It's 7.24 in the morning and I need some sleep

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You can maybe use dmsg and grep for usb and check if it picked up the device in there

fluid gulch Feb 20, 2025, 6:26 AM

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Gonna take a min to pull my PC out and get a pic

true cargo Feb 20, 2025, 6:26 AM

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Alright

fluid gulch Feb 20, 2025, 6:26 AM

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There is a wire that goes from the card and goes into JUSB1

fluid gulch Feb 20, 2025, 6:26 AM

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true cargo I will have to check out now tho

Gn thanks for the help so far

slim gazelleBOT Feb 20, 2025, 6:26 AM

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tobi_7264 received a thank you cookie!

fluid gulch Feb 20, 2025, 6:27 AM

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The card (before I attached the wire)

true cargo Feb 20, 2025, 6:28 AM

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How many pins does the wire from the card to the usb header have?

fluid gulch Feb 20, 2025, 6:28 AM

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9

true cargo Feb 20, 2025, 6:29 AM

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Do you have like a product sheet of the card?

fluid gulch Feb 20, 2025, 6:29 AM

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Like a manual?

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https://www.msi.com/PC-Component/HERALD-BE-WIFI-7-MAX

MSI HERALD-BE WIFI 7 MAX | Accessory | MSI Global

Wi-Fi 7 PCIe Card Qualcomm NCM865

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This is the card

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Basically just an adapter board rocking a Qualcomm QCNCM865

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One of these

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Which is Bluetooth and WiFi 7 capable

true cargo Feb 20, 2025, 6:31 AM

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I see

fluid gulch Feb 20, 2025, 6:32 AM

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true cargo Feb 20, 2025, 6:32 AM

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Yeah it's a pcie m2 adapter

fluid gulch Feb 20, 2025, 6:32 AM

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Those headers are attached to JUSB1 on my board

true cargo Feb 20, 2025, 6:32 AM

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Ok can you maybe check dmsg | grep usb

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And see if anything related to the card shows up there?

fluid gulch Feb 20, 2025, 6:33 AM

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Sure thing

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I'm not seeing anything, would you like me to drop the output in here?

true cargo Feb 20, 2025, 6:37 AM

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Sure

fluid gulch Feb 20, 2025, 6:37 AM

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📎 message.txt

true cargo Feb 20, 2025, 6:39 AM

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[    3.828288] usb 1-3.3: new full-speed USB device number 8 using xhci_hcd
[    3.856131] usb 1-3.3: Device not responding to setup address.
[    4.088091] usb 1-3.3: Device not responding to setup address.
[    4.292288] usb 1-3.3: device not accepting address 8, error -71
[    4.294420] usb 1-3.3: WARN: invalid context state for evaluate context command.
[    4.367329] usb 1-3.3: new full-speed USB device number 9 using xhci_hcd
[    4.394826] usb 1-3.3: Device not responding to setup address.
[    4.631826] usb 1-3.3: Device not responding to setup address.
[    4.836288] usb 1-3.3: device not accepting address 9, error -71
[    4.838414] usb 1-3.3: WARN: invalid context state for evaluate context command.
[    4.841287] usb 1-3-port3: unable to enumerate USB device

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This might be the bluetooth card

fluid gulch Feb 20, 2025, 6:40 AM

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Any way we can grab a PID for that device or confirm it some other way?

true cargo Feb 20, 2025, 6:41 AM

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Hm maybe udev allows that?

fluid gulch Feb 20, 2025, 6:44 AM

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I'm gonna Google it, never used udev before

true cargo Feb 20, 2025, 6:45 AM

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Ahw ait

fluid gulch Feb 20, 2025, 6:45 AM

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lsusb -t
/:  Bus 001.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/9p, 480M
    |__ Port 001: Dev 002, If 0, Class=Audio, Driver=snd-usb-audio, 480M
    |__ Port 001: Dev 002, If 1, Class=Audio, Driver=snd-usb-audio, 480M
    |__ Port 001: Dev 002, If 2, Class=Audio, Driver=snd-usb-audio, 480M
    |__ Port 001: Dev 002, If 3, Class=Human Interface Device, Driver=usbhid, 480M
    |__ Port 003: Dev 003, If 0, Class=Hub, Driver=hub/4p, 480M
    |__ Port 006: Dev 004, If 0, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 007: Dev 007, If 0, Class=Audio, Driver=snd-usb-audio, 12M
    |__ Port 007: Dev 007, If 1, Class=Audio, Driver=snd-usb-audio, 12M
    |__ Port 007: Dev 007, If 2, Class=Audio, Driver=snd-usb-audio, 12M
    |__ Port 007: Dev 007, If 3, Class=Human Interface Device, Driver=usbhid, 12M
/:  Bus 002.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/3p, 10000M
/:  Bus 003.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/4p, 480M
    |__ Port 001: Dev 002, If 0, Class=Human Interface Device, Driver=usbhid, 480M
    |__ Port 001: Dev 002, If 1, Class=Human Interface Device, Driver=usbhid, 480M
    |__ Port 001: Dev 002, If 2, Class=Human Interface Device, Driver=usbhid, 480M
    |__ Port 001: Dev 002, If 3, Class=Human Interface Device, Driver=usbhid, 480M
    |__ Port 001: Dev 002, If 4, Class=Human Interface Device, Driver=usbhid, 480M
    |__ Port 002: Dev 003, If 0, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 002: Dev 003, If 1, Class=Human Interface Device, Driver=usbhid, 12M
/:  Bus 004.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/4p, 10000M

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|__ Port 003: Dev 003, If 0, Class=Hub, Driver=hub/4p, 480M - Probably this?

true cargo Feb 20, 2025, 6:46 AM

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Do sudo mount -t debugfs none /sys/kernel/debug and sudo cat /sys/kernel/debug/usb/devices

fluid gulch Feb 20, 2025, 6:46 AM

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Okay

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Done

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📎 message.txt

true cargo Feb 20, 2025, 6:48 AM

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Can you unplug the usb wire on the card and do it again?

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Then you should hopefully see one less entry

fluid gulch Feb 20, 2025, 6:48 AM

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Okay one sec

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Do I need to restart?

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📎 message.txt

true cargo Feb 20, 2025, 6:49 AM

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No should be fine

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Did you unplug your ps4 controller?

fluid gulch Feb 20, 2025, 6:51 AM

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Yeah I had to, did that throw everything off?

true cargo Feb 20, 2025, 6:51 AM

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No but thats the only thing that changed between the two

fluid gulch Feb 20, 2025, 6:52 AM

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Damn

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Idk if it helps at all but I know nothing is physically broken cus it works in Windows

true cargo Feb 20, 2025, 6:52 AM

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Ok I'm sorry but someone else will need to look into this deeper because at this point I have no Idea how to debug on kernel level anymore

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Also I despreatly need sleep

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Good luck to you

fluid gulch Feb 20, 2025, 6:53 AM

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I very much understand, have a nice one

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fluid gulch Feb 20, 2025, 8:10 AM

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So update, idk wtf happened but I can't get the card to work in Windows11 either I'm going to bed this is a god damn headache

fluid gulch Apr 16, 2025, 3:04 AM

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Update, card got RMA'd new card had PCID found within the patch everything works now.

#[SOLVED] Recompiling Bluetooth driver for Qualcomm WiFi 7 - Bluetooth combo card (QCNCM865)