Thanks for the report. Please try the latest kernel 6.14.0-27 and let us
know if that fixes the issue. If that doesn't fix the issue, you may
want to try enabling the 6.14.0-28 kernel from the proposed pocket to
see if that fixes it. Details on enabling proposed can be found at
https://canonical-kernel-docs.readthedocs-hosted.com/latest/how-
to/testing-verification/test-kernel-in-proposed/ .
** Changed in: linux-hwe-6.14 (Ubuntu)
Status: New => Incomplete
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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/2118786
Title:
Webcam integrada (13d3:56ff) some intermitentemente em Ubuntu 24.04 +
NVIDIA driver-535 (X11)
Status in linux-hwe-6.14 package in Ubuntu:
Incomplete
Bug description:
A câmera integrada é detectada e funciona por alguns segundos, mas em
seguida o dispositivo `/dev/video0` desaparece e aplicativos (Cheese,
Chrome, Meet via Firefox) passam a reportar “No such device”. O
problema ocorre de forma intermitente, mesmo com módulo `uvcvideo`
carregado.
Informações do sistema
- Kernel: `uname -r` → `6.14.0-xx-generic`
- Driver NVIDIA: `nvidia-smi` → `535.54.03`
- Session type: `echo $XDG_SESSION_TYPE` → `x11`
- Laptop: <Marca e modelo exatos do seu notebook>
Passos para reproduzir
1. Abrir o aplicativo Cheese (ou guvcview).
2. Câmera é ativada por ~2 segundos. `/dev/video0` está visível em `/dev`.
3. Em seguida, câmera “desaparece”: `/dev/video0` some e apps exibem erro.
4. Conferir `lsusb` e `ls /dev/video` → nenhum dispositivo de vídeo listado.
5. Repetir — bug intermitente, ~100% de ocorrência dentro de 3 tentativas.
Resultado esperado
A câmera integrada deve permanecer disponível o tempo todo, sem sumir,
permitindo uso contínuo em apps de vídeo.
Resultado observado
Dispositivo de vídeo é criado e removido sem intervenção do usuário.
Logs e saídas relevantes
- `dmesg | grep -i camera` antes/do bug
- `sudo journalctl -k | grep apparmor`
- Conteúdo de `/var/log/Xorg.0.log`
- Saída de `lsusb -v` e `lsmod | grep uvcvideo`
(Anexa arquivos .txt com todos esses logs)
Tentativas de solução já realizadas
- Carregado `modprobe uvcvideo quirks=128`
- Criado manualmente `/dev/video0` com `mknod`
- Testado com e sem Snap do Firefox
- A ferramenta `ubuntu-bug linux` (apport) gerou ID de bug: [cole aqui o ID
gerado]
Observações adicionais
Possivelmente relacionado a conflito entre driver NVIDIA + X11 ou bug no
subsistema UVC do kernel 6.14.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.14.0-24-generic 6.14.0-24.24~24.04.3
ProcVersionSignature: Ubuntu 6.14.0-24.24~24.04.3-generic 6.14.6
Uname: Linux 6.14.0-24-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: cassio 3387 F.... wireplumber
/dev/snd/controlC0: cassio 3387 F.... wireplumber
/dev/snd/seq: cassio 3382 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Jul 25 12:45:26 2025
InstallationDate: Installed on 2024-06-28 (392 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 413c:2514 Dell Computer Corp. Dell Universal Receiver
Bus 001 Device 004: ID 8087:0aaa Intel Corp. Bluetooth 9460/9560 Jefferson
Peak (JfP)
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MachineType: LENOVO 82CG
ProcEnviron:
LANG=pt_BR.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-24-generic
root=UUID=3be6bfeb-5399-48cd-ab23-17541984a3de ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-6.14.0-24-generic N/A
linux-backports-modules-6.14.0-24-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.14
SourcePackage: linux-hwe-6.14
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/24/2020
dmi.bios.release: 1.33
dmi.bios.vendor: LENOVO
dmi.bios.version: EGCN33WW
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 Gaming 3 15IMH05
dmi.ec.firmware.release: 1.33
dmi.modalias:
dmi:bvnLENOVO:bvrEGCN33WW:bd12/24/2020:br1.33:efr1.33:svnLENOVO:pn82CG:pvrIdeaPadGaming315IMH05:rvnLENOVO:rnLNVNB161216:rvrNODPK:cvnLENOVO:ct10:cvrIdeaPadGaming315IMH05:skuLENOVO_MT_82CG_BU_idea_FM_IdeaPadGaming315IMH05:
dmi.product.family: IdeaPad Gaming 3 15IMH05
dmi.product.name: 82CG
dmi.product.sku: LENOVO_MT_82CG_BU_idea_FM_IdeaPad Gaming 3 15IMH05
dmi.product.version: IdeaPad Gaming 3 15IMH05
dmi.sys.vendor: LENOVO
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