Public bug reported:
On my Lenovo IdeaPad 3 14IIL05, the integrated Chicony webcam (USB ID
04f2:b725) is detected by the kernel and device nodes are created
(/dev/video6, /dev/video7). However, no valid frame formats are reported
and all applications fail to stream video. Cheese, VLC, ffplay, and
Guvcview all return errors such as “no such device” or “no valid frame
formats”.
The camera works correctly under Windows, so hardware is confirmed
functional. The issue occurs on Ubuntu 24.04 with kernels 6.8 through
6.14, and also reproduces on Fedora, suggesting a regression or missing
quirk in the Linux uvcvideo driver.
Steps to reproduce:
Boot Ubuntu 24.04 (kernel 6.8–6.14).
Run lsusb -v -d 04f2:b725 → device enumerates.
Run v4l2-ctl --list-devices → shows Integrated Camera at /dev/video6 and
/dev/video7.
Attempt to stream with Cheese, VLC, ffplay, or Guvcview → fails with “no
such device” or “no valid frame formats”.
Expected result: Camera should stream video normally (as it does in
Windows).
Actual result: Device nodes are created but unusable. Applications fail
to stream video. Kernel logs show repeated uvcvideo control errors.
System information:
Laptop: Lenovo IdeaPad 3 14IIL05
Camera: Chicony Integrated Camera (USB ID 04f2:b725)
Ubuntu version: 24.04 LTS
Kernel versions tested: 6.8, 6.14.0‑35 (HWE)
Works in Windows: Yes
Fails in Fedora: Yes
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.14.0-35-generic 6.14.0-35.35~24.04.1
ProcVersionSignature: Ubuntu 6.14.0-35.35~24.04.1-generic 6.14.11
Uname: Linux 6.14.0-35-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: newton 2517 F.... pipewire
newton 2523 F.... wireplumber
/dev/snd/seq: newton 2517 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Thu Nov 20 07:42:39 2025
MachineType: LENOVO 82H7
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-35-generic
root=UUID=9e3ff6ab-27ee-484f-9680-51904072fbe0 ro quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-6.14.0-35-generic N/A
linux-backports-modules-6.14.0-35-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.19
SourcePackage: linux-hwe-6.14
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/16/2022
dmi.bios.release: 1.51
dmi.bios.vendor: LENOVO
dmi.bios.version: GGCN51WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: NO DPK
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: IdeaPad 3 14ITL6
dmi.ec.firmware.release: 1.51
dmi.modalias:
dmi:bvnLENOVO:bvrGGCN51WW:bd11/16/2022:br1.51:efr1.51:svnLENOVO:pn82H7:pvrIdeaPad314ITL6:rvnLENOVO:rnLNVNB161216:rvrNODPK:cvnLENOVO:ct10:cvrIdeaPad314ITL6:skuLENOVO_MT_82H7_BU_idea_FM_IdeaPad314ITL6:
dmi.product.family: IdeaPad 3 14ITL6
dmi.product.name: 82H7
dmi.product.sku: LENOVO_MT_82H7_BU_idea_FM_IdeaPad 3 14ITL6
dmi.product.version: IdeaPad 3 14ITL6
dmi.sys.vendor: LENOVO
** Affects: linux-hwe-6.14 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble wayland-session
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2131988
Title:
Integrated Chicony webcam (04f2:b725) detected but fails to stream on
Ubuntu 24.04
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.14/+bug/2131988/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
