Support Arrow Lake architecture with OVTI08F4 sensor

[ezorita]

This issue is to discuss driver support for Lenovo X1 Carbon Gen 13 with Arrow Lake CPUs 200H/200U.

Current status: Full camera support on Lenovo OEM Image (Ubuntu 24.04.3 only, for now).

[k3tan172]

I also have a Lenovo X1 Carbon Gen 13 with Intel 265H CPU.
Using Fedora 42, kernel 6.15.7, no webcam detected.

[newcolour]

Same. Just gotten the Gen 13 with the 265U and no webcam detected, kernel 6.14.0-27-generic. I tried a few things, including downgrading to 6.11 (which was suggested somewhere else) and 6.8 kernels, but I lose the trackpad and wifi, so I could not verify whether or not it works.
So frustrating...

[ezorita]

@k3tan172 @newcolour I agree it's quite disappointing for a high-end laptop. I believe the new CPU architecture may require driver update and Lenovo might be using a new camera sensor. So unless intel provides additional support for this new architecture and sensor, we won't be able to use the camera in this computer. I am unaware whether there is a roadmap to do so, would be awesome to learn from intel maintainers.

[mmack]

I have the same problem.

Summary, maybe it helps:

=== System Information ===
Linux hostname 6.15.8-200.fc42.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Jul 24 13:26:52 UTC 2025 x86_64 GNU/Linux
Fedora release 42 (Adams)

=== Hardware ===
CPU: Intel(R) Core(TM) Ultra 7 265U
Laptop Model: [Run: sudo dmidecode -s system-product-name]
IPU6 Variant: Meteor Lake IPU

=== IPU6 Camera Hardware ===
PCI Device: 00:05.0 Multimedia controller: Intel Corporation Meteor Lake IPU (rev 05)
Camera Sensor: OVTI08F4:00 (ov08x40 driver)
[Run: sudo dmesg | grep -i 'Found supported sensor' for full output]

=== Kernel Modules ===
intel_ipu6_psys       131072  0
intel_ipu6_isys       155648  0
videobuf2_dma_sg       24576  1 intel_ipu6_isys
videobuf2_v4l2         40960  1 intel_ipu6_isys
videobuf2_common      102400  4 videobuf2_v4l2,intel_ipu6_isys,videobuf2_dma_sg,videobuf2_memops
intel_ipu6             94208  2 intel_ipu6_isys,intel_ipu6_psys
ipu_bridge             24576  2 intel_ipu6,intel_ipu6_isys
ov08x40                32768  0
v4l2_fwnode            40960  2 intel_ipu6_isys,ov08x40
v4l2_async             32768  3 v4l2_fwnode,intel_ipu6_isys,ov08x40
v4l2loopback           77824  0
videodev              421888  6 v4l2_async,v4l2_fwnode,videobuf2_v4l2,v4l2loopback,intel_ipu6_isys,ov08x40
mc                     94208  6 v4l2_async,videodev,videobuf2_v4l2,intel_ipu6_isys,videobuf2_common,ov08x40

=== Installed Packages ===
akmod-intel-ipu6-0.0-20.20250115git13c466e.fc42.x86_64
gstreamer1-plugins-icamerasrc-0.0-13.20241129gitee85264.fc42.x86_64
ipu6-camera-bins-0.0-17.20241127git3c1cdd3.fc42.x86_64
ipu6-camera-hal-0.0-24.20241218gitb6f6eeb.fc42.x86_64
kmod-intel-ipu6-6.15.8-200.fc42.x86_64-0.0-20.20250115git13c466e.fc42.x86_64
v4l2-relayd-0.1.2-14.20220126git2e4d5c9.fc42.x86_64

=== V4L2 Devices ===
ipu6 (PCI:0000:00:05.0):
	/dev/video1 through /dev/video48
	/dev/media0

Intel MIPI Camera (platform:v4l2loopback-000):
	/dev/video0

=== Problem Description ===
The camera is detected but shows only a black screen when accessed through any application (cheese, gstreamer, etc.)

=== Camera Test Results ===
Test 1 - v4l2src: Shows black screen
Test 2 - icamerasrc: Fails with "No attached camera shared memory" error  
Test 3 - libcamera: No sensor found for /dev/media0

=== Root Cause ===
The camera HAL is loading the wrong AIQB file:
- Loading: AR0234_TGL_10bits.aiqb
- Should load: OV08X40_CJFME55_MTL.aiqb

=== Configuration Files ===
- OV08X40 sensor config exists: /etc/camera/ipu6epmtl/sensors/ov08x40-uf.xml
- AIQB file exists: /usr/share/defaults/etc/camera/ipu6epmtl/OV08X40_CJFME55_MTL.aiqb
- The sensor is listed in: /etc/camera/ipu6epmtl/libcamhal_profile.xml

=== Error Messages ===
When running icamerasrc:
[08-03 09:33:02.242] CamHAL[INF] aiqb file name AR0234_TGL_10bits.aiqb
[08-03 09:33:02.243] CamHAL[ERR] No attached camera shared memory!
[08-03 09:33:02.243] CamHAL[ERR] camera open num couldn't be 0

=== Additional Information ===
- The ov08x40 kernel module is loaded successfully
- The sensor is detected in dmesg as OVTI08F4:00
- All required firmware files are present
- v4l2-relayd service was tested but camera still shows black screen

=== Expected Behavior ===
The camera HAL should automatically detect and use the correct AIQB file (OV08X40_CJFME55_MTL.aiqb) for the OV08X40 sensor on Meteor Lake systems.

=== Steps to Reproduce ===
1. Install Fedora 42 on a system with Intel Meteor Lake CPU and OV08X40 camera sensor
2. Install IPU6 camera packages
3. Try to access camera with any application
4. Camera shows black screen despite being detected

[ezorita]

Thanks @mmack for your detailed summary. So far I had tried the same as you in Fedora 42 and got exactly the same results. It indeed seems the camera is properly detected but without image.

Some additional insights:

# Capture video format detected YU12
$ v4l2-ctl --list-formats --device=/dev/video0
ioctl: VIDIOC_ENUM_FMT
	Type: Video Capture

	[0]: 'YU12' (Planar YUV 4:2:0)

# cam does not detect cameras
$ sudo cam -l
[1:17:41.721167745] [14428]  INFO Camera camera_manager.cpp:327 libcamera v0.4.0
[1:17:41.738289889] [14431]  INFO SimplePipeline simple.cpp:1581 No sensor found for /dev/media0
Available cameras:

# gst-launch does not show any errors but the video stream is blank
$ sudo gst-launch-1.0 v4l2src device=/dev/video0 ! videoconvert ! autovideosink
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
Redistribute latency...
0:00:00.0 / 99:99:99.

It seems that a driver for the sensor hardware already exists, which is awesome news. Let's hope there is not much rework needed to make it work 🤞🏽

btw. how did you get this nice summary?

[ezorita]

Maybe @vicamo can shed some light here. I saw he contributed with fixes in Ubuntu for the OVTI08F4 sensor and a fix to support Arrow Lake architecture.

@vicamo any idea on what's missing here? Is this a small driver configuration issue, or depending on the specific hardware used by Lenovo it might require a complete rework?

[newcolour]

Has anyone tried the steps in this issue discussion? It is mentioned at the end that a fix has come with the regular update, but this has not happened to me. I have purged all drivers and removed the oem ppa, and so I am a bit at loss (the driver appears still in the list of available drivers).

[ezorita]

@newcolour I tried with the Ubuntu 25.04 fix but no luck. The device is not recognized as in Fedora.

I will go back to Fedora 42 and try with this the relayd fix they suggest in the same thread: #344 (comment)

[newcolour]

@newcolour I tried with the Ubuntu 25.04 fix but no luck. The device is not recognized as in Fedora.

Same. The camera is just not recognized. Thanks for confirming, I started to feel a bit like running in circles 😄

I will go back to Fedora 42 and try with this the relayd fix they suggest in the same thread: #344 (comment)

[mmack]

Thanks @mmack for your detailed summary. So far I had tried the same as you in Fedora 42 and got exactly the same results. It indeed seems the camera is properly detected but without image.

It seems that a driver for the sensor hardware already exists, which is awesome news. Let's hope there is not much rework needed to make it work 🤞🏽

btw. how did you get this nice summary?

Hopefully not a big deal then? If you guys need a tester ping me.
The summary is done via claude code ;)

[ezorita]

Good news. Lenovo confirmed they are working on it and that they already have a working patch. I'll let you know as they provide more information.

[newcolour]

Awesome news @ezorita! Thank you!

[ezorita]

@k3tan172 @newcolour @mmack I have awesome news. I have just tried the Ubuntu OEM image (based on Ubuntu 24.04.3) provided by Lenovo and the camera works perfectly, great image quality.

I asked them whether this can be shared publicly.

[newcolour]

Excellent news. Also because I messed with my installation so much that my x1 no longer boots and was about to reinstall 😄

@k3tan172 @newcolour @mmack I have awesome news. I have just tried the Ubuntu OEM image (based on Ubuntu 24.04.3) provided by Lenovo and the camera works perfectly, great image quality.

I asked them whether this can be shared publicly.