Bug 2307279

Summary: ipu6 with hi556 sensor
Product: [Fedora] Fedora Reporter: fattony4
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 41CC: acaringi, adscvr, airlied, alciregi, bskeggs, hdegoede, hpa, josef, kernel-maint, linville, masami256, mchehab, ptalbert, steved, suraj.ghimire7
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Hardware: Unspecified   
OS: Linux   
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Last Closed: 2024-08-26 08:52:47 UTC Type: Bug
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dmesg right after fresh reboot and starting qcam none

Description fattony4 2024-08-22 13:43:45 UTC 
Created attachment 2044609 [details]
dmesg right after fresh reboot and starting qcam

1. Please describe the problem:
ipu6 webcam with hi556 sensor does not work. It used to work with these patches: https://copr.fedorainfracloud.org/coprs/jwrdegoede/ipu6-softisp

a) qcam
$ qcam
[0:14:20.923375282] [9500] INFO Camera camera_manager.cpp:313 libcamera v0.3.1
The cached device pixel ratio value was stale on window update. Please file a QTBUG which explains how to reproduce.
It does not show a webcam in the dropdown.

b) gum_test.html (https://mozilla.github.io/webrtc-landing/gum_test.html)
The "image" is white and it says "FPS now: 0.0 , entire capture: 0.0" and "Success!".


2. What is the Version-Release number of the kernel:
Fedora 41
kernel 6.11.0-0.rc3.30.fc41.x86_64
libcamera-0.3.1-2.fc41.src.rpm


3. Did it work previously in Fedora? If so, what kernel version did the issue
No, this is a new feature.


4. dmesg
Dmesg was produced like this:
1) boot
2) open terminal, start qcam
3) sudo dmesg > dmesg.txt
Comment 1 Hans de Goede 2024-08-24 15:15:51 UTC 
Thank you.

Looking at the dmesg it seems that the intel-ipu6 kernel module never loads.

I suspect that you also have the rpmfusion packages installed and those create a /etc/modprobe/ipu6-driver-select.conf file blacklisting the opensource modules which ship with the mainline kernel because they conflict with the the out of tree drivers from the rpmfusion packages.

To fix this run "sudo ipu6-driver-select foss" to switch to using the FOSS stack.

Note I'm not seeing the out-of-tree drivers trying to load in dmesg either, but I guess they might need some work to build successfully against a 6.11 kernel.
Comment 2 fattony4 2024-08-24 15:41:26 UTC 
This is what I did:

$ cat /etc/modprobe/ipu*
cat: '/etc/modprobe/ipu*': No such file or directory
$ ipu6-driver-select foss
Removed '/etc/systemd/system/multi-user.target.wants/v4l2-relayd.service'.
Reboot your system for the changes to take effect

Then I rebooted and it now works!
Comment 3 Hans de Goede 2024-08-26 08:52:47 UTC 
Good to hear that things work again.

Needing to run "ipu6-driver-select foss" is expected when you have the rpmfusion pkgs installed ("ipu6-driver-select" is part of the rpmfusion pkgs). So I believe that this bug is resolved now, closing.
Comment 4 fattony4 2024-08-26 18:55:50 UTC 
Fantastic, thanks again!

Btw, this command (ipu6-driver-select) does not seem to be documented anywhere. Maybe you could mention it on the following pages:

https://fedoraproject.org/wiki/Changes/IPU6_Camera_support

https://discussion.fedoraproject.org/t/f41-change-proposal-ipu6-camera-support-self-contained/124329/4