Bug 2526246

Summary: IPU6 camera isn't detected due to intel_cvs driver failure
Product: [Fedora] Fedora Reporter: Andrey Motoshkov <motoskov>
Component: kernelAssignee: Justin M. Forbes <jforbes>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 45CC: acaringi, adscvr, airlied, hans, hpa, jforbes, kernel-maint, linville, masami256, mchehab, nickolasjcarr, ptalbert, steved, suraj.ghimire7
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
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Fixed In Version: Doc Type: ---
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Clone Of: Environment:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
kernel log
none
lsusb output none

Description Andrey Motoshkov 2026-08-31 11:08:46 UTC
1. Please describe the problem:
Laptop built-in camera isn't detected

2. What is the Version-Release number of the kernel:
7.2.1-300.fc45.x86_64

3. Did it work previously in Fedora? If so, what kernel version did the issue
   *first* appear?  Old kernels are available for download at
   https://koji.fedoraproject.org/koji/packageinfo?packageID=8 :
Worked in F44 


4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:
Boot and run: cam -l


5. Does this problem occur with the latest Rawhide kernel? To install the
   Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
   ``sudo dnf update --enablerepo=rawhide kernel``:


6. Are you running any modules that not shipped with directly Fedora's kernel?:
nvidia,v4l2loopback built from akmod

7. Please attach the kernel logs. You can get the complete kernel log
   for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
   issue occurred on a previous boot, use the journalctl ``-b`` flag.

$ sudo dmesg |grep ipu
[    6.398536] intel-ipu6 0000:00:05.0: enabling device (0000 -> 0002)
[    6.977750] intel-ipu6 0000:00:05.0: Found supported sensor OVTI02C1:00
[    6.977827] intel-ipu6 0000:00:05.0: Connected 1 cameras
[    6.980109] intel-ipu6 0000:00:05.0: Sending BOOT_LOAD to CSE
[    7.017861] intel-ipu6 0000:00:05.0: Sending AUTHENTICATE_RUN to CSE
[    7.074040] intel-ipu6 0000:00:05.0: CSE authenticate_run done
[    7.074049] intel-ipu6 0000:00:05.0: IPU6-v4[7d19] hardware version 6
$ sudo dmesg |grep cvs
[    7.299665] intel_cvs i2c-INTC10E0:00: No quirks for device (VID:0x2ac1 PID:0x20d1)
[    7.299976] intel_cvs i2c-INTC10E0:00: error -EREMOTEIO: get caps failed
[    7.300026] intel_cvs i2c-INTC10E0:00: probe with driver intel_cvs failed with error -121


Reproducible: Always

Comment 1 Andrey Motoshkov 2026-08-31 11:10:28 UTC
Created attachment 2156106 [details]
kernel log

Comment 2 Kate Hsuan 2026-09-01 02:22:27 UTC
Thank you for reporting the issue.

Can you please try the rawhide kernel?

Comment 3 Kate Hsuan 2026-09-01 02:53:11 UTC
I think the issue is here
[    7.299665] intel_cvs i2c-INTC10E0:00: No quirks for device (VID:0x2ac1 PID:0x20d1)

The upstream supports "VID:0x2ac1 PID:0x20d0" Lattice NX33 but I haven't found the vid and pid are listed in the cvs driver.

Can you please upload the "lsusb" results?

I can make a test build for it to see if it works or not.

Comment 4 Andrey Motoshkov 2026-09-01 07:49:20 UTC
Created attachment 2156313 [details]
lsusb output

Comment 5 Kate Hsuan 2026-09-01 09:51:47 UTC
The test build can be found here
https://koji.fedoraproject.org/koji/taskinfo?taskID=149739485

Hope 0x20d0 is similar to 0x20d1. I added the device quirk according to 0x20d0.

Comment 6 Andrey Motoshkov 2026-09-02 11:14:58 UTC
the fix is working - camera is detected and produces image.

Comment 7 Andrey Motoshkov 2026-09-02 12:02:35 UTC
image is upside-down, already opened: https://bugzilla.redhat.com/show_bug.cgi?id=2510889

Comment 8 Kate Hsuan 2026-09-03 13:39:46 UTC
Awesome.

Thank you for the testing.

I'll prepare a patch and send it to the upstream.
For the upside-down issue, I'll propose a new test build for you to test and I'll post the URL in bz2510889.

Comment 9 Kate Hsuan 2026-09-04 08:06:10 UTC
Upstream work can be found here
https://lore.kernel.org/linux-media/20260904034344.105034-1-hpa@redhat.com/

Comment 10 Andrey Motoshkov 2026-09-22 14:26:37 UTC
Fixed in:
kernel-7.2.7-300.fc45.x86_64