Not working on Dell Pro Plus 14, PB14250

[glennmorris]

Hi,

I have a Dell Pro Plus 14 laptop (model PB14250), with built-in "5MP HDR + IR Camera" (Dell part 319-BBJW).
This is a Lunar Lake system with an Ultra 7 268V.
The camera works out of the box in Windows 11, but is not detected in Fedora 42.
I have tried the following steps to get it to work:

1. Install the code from the 4 IPU7 repositories here.
   After loading the ipu7 kernel module, I get "no subdev found in graph", as per Can't make work on Lunar Lake 2024 MSI Prestige 13 AI+ Evo A2VM #17 .

2. The Windows driver for the camera seems to be 70.26100.2.18597.
   Downloading the relevant file from here shows it contains hm1092 and ov05c10.

3. The ov05c10 is not listed in ipu-bridge.c. Following the suggestion from here, I patched ipu-bridge.c to add it, as per this Ubuntu patch.

I now get

intel-ipu7: Found supported sensor OVTI05C1:00
intel-ipu7: Connected 1 cameras

but the camera still does not work. The relevant errors seem to be:

int3472-discrete INT3472:00: cannot find GPIO chip INTC10B5:00, deferring
int3472-discrete INT3472:00: GPIO type 0x02 unknown; the sensor may not work

The second one resembles this IPU6 issue, but has a different address.

I attach some files with possibly relevant info.

Thanks in advance for any help with this.

lsusb.txt

i2c-devices.txt

v4l2-ctl.txt

dmesg.gz

[abrayninger]

Hello,

I have the exactly same laptop, OS, and issue.

@glennmorris , thank you for filing this ticket. Hopefully the solution will be found soon.

[p4l1ly]

Intel's Windows Drivers Exist - 17 Months Old, Still No Linux Port

I'm experiencing the exact same issue on Dell XPS 13 9350 (2024) with Lunar Lake and have done extensive investigation.

Key Finding: Intel Already Has The Drivers (For Windows)

By examining my Windows dual-boot partition, I found two Intel drivers that solve this problem:

1. UsbBridge.sys v4.0.1.346 (May 9, 2024)

Location: C:\Windows\System32\DriverStore\FileRepository\usbbridge.inf_amd64_...\
Supports: USB\VID_2AC1&PID_20C9 (Lattice NX33 FPGA)
Purpose: USB-GPIO bridge driver

2. UsbGpio.sys v1.0.2.733 (May 8, 2024)

Location: C:\Windows\System32\DriverStore\FileRepository\usbgpio.inf_amd64_...\
Supports: ACPI\INTC10B5 (Lunar Lake virtual GPIO)
Platforms: TGL, ADL, RPL, MTL, ARL, LNL, MTL CVF, PTL
Purpose: Platform driver connecting ACPI device to USB GPIO

What This Means

1. This is NOT Dell-specific hardware - It's official Intel platform support
2. This is NOT experimental - Production drivers (v4.0 and v1.0)
3. This is NOT a new problem - Drivers have existed since May 2024
4. This is NOT a maybe - Intel already solved this for Windows

We're now in October 2025 - 17 months since the Windows drivers were released, and still no Linux port.

Community Proof of Concept

To demonstrate this is technically feasible, I reverse-engineered the Windows drivers and created a Linux port:

What I built:

• lattice-bridge.c - USB driver for Lattice NX33 (VID_2AC1, PID_20C9)
• usbgpio-platform.c - Platform driver for ACPI\INTC10B5
• Both compile and load successfully

Status: ~70% complete

• ✅ USB driver detects Lattice device
• ✅ GPIO chip registers (gpiochip5, 10 pins)
• ✅ Platform driver binds to INTC10B5
• ⚠️ Remaining: INT3472 integration architecture

Time to create: A few hours of reverse engineering
Time for Intel to port: Probably a few days (they have source code)

Technical Details

USB Protocol Commands (found in binary):

• GPIOD (0x444F4950) - GPIO Direction control
• GPIOI (0x494F4950) - GPIO I/O operations

Architecture:

Camera → INT3472 power mgmt → INTC10B5 (ACPI) → UsbGpio driver → 
→ USB Bridge interface → UsbBridge driver → Lattice NX33 (USB 2ac1:20c9)

Device: Lattice NX33 FPGA used as USB-to-GPIO bridge

Request to Intel

@intel Given that:

• ✅ You've already implemented this for Windows (May 2024)
• ✅ It's been 17 months with no Linux port
• ✅ Multiple users are affected
• ✅ Community has proven it's technically feasible
• ✅ This is core platform support (not optional feature)

Please:

1. Port UsbBridge.sys and UsbGpio.sys to Linux, or
2. Provide timeline for when this will be available, or
3. Provide technical guidance so community can complete the port, or
4. Explain why this won't be supported on Linux

Silence for 17 months while Windows drivers exist is not acceptable for platform-level hardware support.

For Other Affected Users

If you're experiencing this issue:

• 👍 React to this comment to show demand
• 💬 Add your hardware details (laptop model, CPU)
• 🔗 Share on forums/social media for visibility

The more people affected we can show, the higher priority this becomes.

Hardware affected:

• Dell XPS 13 9350 (2024) - Lunar Lake
• Dell Pro Plus 14 PB14250 - Lunar Lake
• [Add yours!]

---

Thank you to @glennmorris for filing this issue and the other community members investigating this!

---

[abrayninger]

Thank you @p4l1ly for the amazing work you've done.
My affected hardware:

• Dell Pro 13 Premium - Lunar Lake (Intel(R) Core(TM) Ultra 7 268V)

[sbomsdorf]

Awesome, @p4l1ly! Thank you very much.

+1 for Dell Pro Plus 14 PB14250 - Lunar Lake

[Steven--]

Thanks @p4l1ly. Dell Pro 14 Premium PA14250 is also affected. The CPU is Intel(R) Core(TM) Ultra 7 268V.

[scott-the-brewer]

Same issue:

ThinkPad X9 15 Aura Edition (15ʺ Intel) Laptop - The CPU is Intel® Core™ Ultra 7 258V Processor

[seov-nordic]

Same issue on Dell Pro 13 Plus PB13250 (Ultra 7 268V)

[Fabio1988]

Same issue: Dell Pro Max 16 (MA16250)

[thotro]

Same issue: Dell Pro Max 16 (MA16250)

[Michedev]

Same issue: Samsung Galaxy Book Pro 5 940XHA

[milachae]

Same issue: Dell pro 13 premium PA13250 (Ultra 7 268V)

[abrayninger]

• Dell Pro 13 Premium - Lunar Lake (Intel(R) Core(TM) Ultra 7 268V)

According to this article Intel IPU7 Driver Merged For Linux 6.17 For Webcams On Lunar Lake & Panther Lake Laptops, the IPU7 support must have been added to the kernel 6.17.

I just launched new Fedora 43 (kernel 6.17) on my laptop and it seems like the issue have not been resolved. The camera is still not recognized.

[anzigo]

• Dell Pro 13 Premium - Lunar Lake (Intel(R) Core(TM) Ultra 7 268V)

According to this article Intel IPU7 Driver Merged For Linux 6.17 For Webcams On Lunar Lake & Panther Lake Laptops, the IPU7 support must have been added to the kernel 6.17.

I just launched new Fedora 43 (kernel 6.17) on my laptop and it seems like the issue have not been resolved. The camera is still not recognized.

Perhaps you may want to take a look at this post by Hans de Goede:
https://hansdegoede.dreamwidth.org/31089.html
This is more recent and includes some additional context/info on the issue, as well as steps to report/test.

[agrisvv]

If somone want some tests..
Tested on fc43 kernel 6.17.5 Dell Pro 13 Premium PA13250
Started with link https://bugzilla.redhat.com/show_bug.cgi?id=2402746 witch tells what it is up to intel now..
disable secureboot ( enable back if no longer testing )

sudo dnf install kernel-devel
git clone https://github.com/intel/vision-drivers.git
cd vision-drivers
make

Run before any cam app started.

sudo insmod intel_cvs.ko

Run qcam.
It work but with bad quality

For chrome

chrome://flags/#enable-webrtc-pipewire-camera

But i didn't get to work on firefox or chrome. Something are crashing at pipewire and/or kernel.

To uninstall

sudo rmmod intel_cvs

[yar-sh]

Same issue: ThinkPad X9 15 Aura Edition w/ Intel(R) Core(TM) Ultra 7 268V, Fedora 43 Kinoite (kernel 6.17.7) and stock Ubuntu 25.10 (kernel 6.17.0)