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Models covered
Dell Pro 14 Premium PA14250

Sub-models options:
- Intel Core Ultra 7 (Series 2, Lunar Lake)
- Intel Arc Graphics 130V/140V integrated GPU
- LPDDR5X (on-package)
- SK hynix PVC10 NVMe SSD
- Intel BE201 WiFi 7 / Bluetooth (CNVi)
- SoundWire audio (Cirrus Logic CS42L43 codec)
- OmniVision OV08X40 webcam (ACPI id OVTI08F4) via Intel IPU7, Synaptics SVP7500 USB-to-I2C bridge and Intel CVS chip
- Synaptics fingerprint reader (06cb:0173)
- Intel Lunar Lake NPU
- Thunderbolt 4

Overall Status

Legend :
= OK ; Unsupported(No Driver) ; = Error (Couldn't get it working); [?] Unknown, Not Test ; [-] Not-applicable
= Configuration Required; = Only works with a non-free driver and or firmware

Important Notes

• Upgrade firmware packages in lockstep with a backports kernel. The single biggest pitfall on this machine: installing a trixie-backports 7.x kernel while keeping trixie's firmware packages breaks WiFi, the microphone and the webcam simultaneously. The 7.x iwlwifi driver requires iwlwifi-bz-b0-fm-c0 firmware version 100..c102 (trixie's firmware-iwlwifi 20250410-2 stops at 97, so the driver finds no usable firmware), the cs42l43 audio codec needs cs42l43.bin from firmware-cirrus, and the IPU7 needs intel/ipu/ipu7_fw.bin from firmware-intel-graphics. All three are fixed by installing the firmware packages from trixie-backports (see Configuration).

• The backports APT source must include the non-free-firmware component. A trixie-backports line listing only main makes apt install -t trixie-backports firmware-iwlwifi silently fall back to the old trixie version — everything looks installed, but WiFi stays broken.

• Remove Debian's v4l2loopback-dkms before installing a backports 7.x kernel. The packaged v4l2loopback 0.15.0 does not build against 7.x kernels; its DKMS hook makes linux-headers-* post-installation fail, leaving dpkg in an error state. sudo dkms remove v4l2loopback/0.15.0 --all && sudo apt purge v4l2loopback-dkms, then use upstream v4l2loopback 0.15.4 (see Webcam).

Installation

The stock trixie kernel (6.12) boots and gives a working desktop including WiFi, so a netinst image is usable. The webcam does not work on any stock kernel and requires the backports kernel plus manual setup below.

Configuration

Backports and Non-Free Firmware

Make sure the backports source lists all components:

deb http://deb.debian.org/debian trixie-backports main contrib non-free non-free-firmware

Kernel and Firmware

Install the kernel, headers and — critically — the matching firmware from backports:

sudo apt update
sudo apt install -t trixie-backports linux-image-amd64 linux-headers-amd64
sudo apt install -t trixie-backports firmware-iwlwifi firmware-cirrus \
    firmware-intel-graphics firmware-misc-nonfree firmware-sof-signed alsa-ucm-conf

Verify before rebooting (all three files must exist):

ls /lib/firmware/iwlwifi-bz-b0-fm-c0-c1*.ucode*   # WiFi
ls /lib/firmware/cs42l43.bin*                     # Microphone
ls /lib/firmware/intel/ipu/ipu7_fw.bin*           # Webcam

WiFi

Intel BE201 (CNVi). Works out of the box on the stock 6.12 kernel. On backports 7.x kernels it uses the iwlmld op-mode and requires firmware-iwlwifi from backports (loads iwlwifi-bz-b0-fm-c0-c102.ucode). The boot-time message failed to load iwl-debug-yoyo.bin is a harmless probe for an optional debug blob.

Bluetooth

Works with btintel_pcie and the ibt-0190-0291 firmware from firmware-iwlwifi.

Audio

SoundWire audio through the SOF driver stack (sof-audio-pci-intel-lnl) with the Cirrus CS42L43 codec. Speakers, headset jack and microphones work. On backports 7.x kernels the codec requires cs42l43.bin from firmware-cirrus (backports version) — without it the microphone is dead and dmesg shows cs42l43 ... Failed to load firmware.

Webcam

Works with manual setup on a backports 7.0.10+ kernel. The OmniVision OV08X40 sensor (ACPI id OVTI08F4) is connected through the Intel IPU7 (PCI 8086:645d) and a Synaptics SVP7500 USB-to-I2C bridge, with an Intel CVS chip owning the sensor at boot. Debian kernels since 7.0 ship the in-tree staging IPU7 ISYS driver (CONFIG_VIDEO_INTEL_IPU7=m), since 7.0.10 the usbio bridge drivers (1130114), and the in-tree ov08x40 sensor driver binds the sensor. Still needed out of tree: the IPU7 PSYS module, the CVS driver, Intel's proprietary Camera HAL, and a ?V4L2 bridge for ordinary applications.

DKMS kernel modules (build with sudo dkms add <dir> && sudo dkms autoinstall -k <kernel>):

1. ipu7-drivers — intel/ipu7-drivers. Provides intel_ipu7_psys (/dev/ipu7-psys0, required by the Camera HAL); its ISYS overrides the in-tree staging one so ISYS/PSYS load as a matched set.

2. vision-driver — intel/vision-drivers. Intel CVS driver; transfers sensor ownership from the CVS chip to the IPU. (Registers in DKMS as vision-driver/1.0.0.)

3. v4l2loopback 0.15.4 — upstream, tag v0.15.4 (Debian's 0.15.0 does not build on 7.x kernels, see Important Notes).

Userspace (Camera HAL): install ipu7-camera-bins (copy lib/, include/; skip firmware files already shipped by firmware-intel-graphics), then build ipu7-camera-hal:

cmake -DCMAKE_POLICY_VERSION_MINIMUM=3.5 -DCMAKE_BUILD_TYPE=Release \
      -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_INSTALL_LIBDIR=lib \
      -DBUILD_CAMHAL_ADAPTOR=ON -DBUILD_CAMHAL_PLUGIN=ON \
      -DIPU_VERSIONS="ipu7x;ipu75xa" \
      -DUSE_STATIC_GRAPH=ON -DUSE_STATIC_GRAPH_AUTOGEN=ON ..

and icamerasrc (branch icamerasrc_slim_api, build with CHROME_SLIM_CAMHAL=ON, autotools). Symlink the GStreamer plugin into the multiarch directory:

sudo ln -s /usr/lib/gstreamer-1.0/libgsticamerasrc.so \
           /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgsticamerasrc.so

Test:

gst-launch-1.0 icamerasrc ! "video/x-raw,format=NV12,width=1280,height=720" ! videoconvert ! autovideosink

?V4L2 bridge (for Teams, Zoom, Cheese, browsers): the camera only works through icamerasrc; ?V4L2-only applications need a virtual camera fed by v4l2-relayd — gitlab.com/vicamo/v4l2-relayd, tag upstream/0.2.0 (autotools, not meson). After make install, configure:

# /etc/modprobe.d/v4l2-relayd.conf
options v4l2loopback exclusive_caps=1 card_label="Virtual Camera"
# /etc/modules-load.d/v4l2-relayd.conf
v4l2loopback
# /etc/default/v4l2-relayd
VIDEOSRC="icamerasrc"
FORMAT=NV12
WIDTH=1280
HEIGHT=720
FRAMERATE=30/1
CARD_LABEL="Virtual Camera"

Install the shipped systemd units and enable an instance:

sudo cp data/systemd/v4l2-relayd.service data/systemd/v4l2-relayd@.service /etc/systemd/system/
sudo systemctl daemon-reload && sudo systemctl enable --now v4l2-relayd@camera.service

Applications then see a single "Virtual Camera" ?V4L2 device; the relay starts icamerasrc on demand when the device is opened.

Udev rules: hide the raw IPU7 nodes from ?V4L2 applications and open up the PSYS device:

# /etc/udev/rules.d/99-hide-ipu-raw.rules
SUBSYSTEM=="video4linux", ATTR{name}=="Intel IPU7*", RUN+="/usr/bin/setfacl -b $env{DEVNAME}"
# /etc/udev/rules.d/99-ipu7-psys.rules
KERNEL=="ipu7-psys[0-9]*", GROUP="video", MODE="0660"

Add your user to the video group and re-login.

Quirks

• intel_cvs WARNING backtrace at boot (WARNING: kernel/irq/manage.c:1502 at __setup_irq): the out-of-tree vision-drivers CVS module requests its wake IRQ with IRQF_ONESHOT but no threaded handler. Harmless — probe continues and the camera works. The mainline driver (drivers/media/i2c/cvs/, kernel 7.2+) is not affected; reported upstream.

• gpio_usbio ... [Firmware Bug]: GPIO 4 is not in FW pins bitmap and i2c_usbio ... Invalid speed 400000 adjusting to bus max 100000 — cosmetic messages from the usbio bridge.

• intel_ipu7: module is from the staging directory — expected; the ISYS driver is in staging.

• iwlwifi ... failed to load iwl-debug-yoyo.bin — harmless probe for an optional debug firmware.

System Summary

lspci

00:00.0 Host bridge: Intel Corporation Device 6400 (rev 04)
00:02.0 VGA compatible controller: Intel Corporation Lunar Lake [Intel Arc Graphics 130V / 140V] (rev 04)
00:04.0 Signal processing controller: Intel Corporation Lunar Lake-M Dynamic Tuning Technology (rev 04)
00:05.0 Multimedia controller: Intel Corporation Lunar Lake IPU (rev 04)
00:07.0 PCI bridge: Intel Corporation Lunar Lake-M Thunderbolt 4 PCI Express Root Port #0 (rev 10)
00:07.1 PCI bridge: Intel Corporation Lunar Lake-M Thunderbolt 4 PCI Express Root Port #1 (rev 10)
00:0a.0 Signal processing controller: Intel Corporation Lunar Lake-M Crashlog and Telemetry (rev 04)
00:0b.0 Processing accelerators: Intel Corporation Lunar Lake NPU (rev 04)
00:0d.0 USB controller: Intel Corporation Lunar Lake-M Thunderbolt 4 USB Controller (rev 10)
00:0d.2 USB controller: Intel Corporation Lunar Lake-M Thunderbolt 4 NHI #0 (rev 10)
00:12.0 Serial controller: Intel Corporation Lunar Lake-M Integrated Sensor Hub (rev 10)
00:13.0 Communication controller: Intel Corporation Device a862 (rev 10)
00:14.0 USB controller: Intel Corporation Lunar Lake-M USB 3.2 Gen 2x1 xHCI Host Controller (rev 10)
00:14.2 RAM memory: Intel Corporation Lunar Lake-M Shared SRAM (rev 10)
00:14.3 Network controller: Intel Corporation BE201 320MHz (rev 10)
00:14.7 Bluetooth: Intel Corporation Device a876 (rev 10)
00:15.0 Serial bus controller: Intel Corporation Lunar Lake-M Serial IO I2C Controller #0 (rev 10)
00:15.3 Serial bus controller: Intel Corporation Lunar Lake-M Serial IO I2C Controller #3 (rev 10)
00:16.0 Communication controller: Intel Corporation Lunar Lake-M CSME HECI #1 (rev 10)
00:16.3 Serial controller: Intel Corporation Lunar Lake-M Keyboard and Text (KT) Redirection (rev 10)
00:19.0 Serial bus controller: Intel Corporation Device a850 (rev 10)
00:19.1 Serial bus controller: Intel Corporation Device a851 (rev 10)
00:1c.0 PCI bridge: Intel Corporation Lunar Lake-M PCI Express Root Port #1 (rev 10)
00:1e.0 Communication controller: Intel Corporation Lunar Lake-M Serial IO UART Controller #0 (rev 10)
00:1f.0 ISA bridge: Intel Corporation Device a807 (rev 10)
00:1f.3 Audio device: Intel Corporation Lunar Lake-M HD Audio Controller (rev 10)
00:1f.4 SMBus: Intel Corporation Lunar Lake-M SMbus Controller (rev 10)
00:1f.5 Serial bus controller: Intel Corporation Lunar Lake-M SPI Controller (rev 10)
71:00.0 Non-Volatile memory controller: SK hynix PVC10 NVMe Solid State Drive (DRAM-less)

lsusb

Bus 003 Device 003: ID 06cb:0701 Synaptics, Inc. SVP7500
Bus 003 Device 007: ID 06cb:0173 Synaptics, Inc.
(root hubs and external devices omitted)

dmidecode

System Information
        Manufacturer: Dell Inc.
        Product Name: Dell Pro 14 Premium PA14250

Base Board Information
        Manufacturer: Dell Inc.
        Product Name: 0NGT53

Resources

Useful Links

• 1130114 — usbio bridge drivers enabled in Debian kernels since 7.0.10

• intel/ipu7-drivers — IPU7 DKMS modules (PSYS)

• intel/vision-drivers — Intel CVS DKMS module

• intel/ipu7-camera-bins, intel/ipu7-camera-hal, intel/icamerasrc — Camera HAL userspace

• vicamo/v4l2-relayd — ?V4L2 relay daemon (virtual camera)

• Lunar Lake IPU7 camera on Debian 13 (ThinkPad X1C Gen 13) — closely related walkthrough

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