[Bug 2150819] [NEW] Internal webcam does not work on Lenovo 21Q7000LBR after fresh Ubuntu 26.04 install.

Public bug reported: Internal webcam does not work on Lenovo 21Q7000LBR after fresh Ubuntu 26.04 install. This appears related to Ubuntu bug #2107320: https://bugs.launchpad.net/bugs/2107320 That bug added support for the Sony IMX471 / SONY471A camera sensor on Intel IPU7 platforms. My system detects the same SONY471A sensor, but the IPU7 bridge fails with a duplicate software node error before camera/media devices are created. System: - Lenovo 21Q7000LBR - Ubuntu 26.04 LTS - Kernel: 7.0.0-15-generic - intel-ipu7-dkms: 0~git202602091007.a88b1909-0ubuntu1 - Sensor appears to be Sony IMX471 / SONY471A - BIOS IntegratedCameraAccess: Enable Problem: - No /dev/video* devices are created - No /dev/media* devices are created - Camera apps cannot see the internal webcam Relevant kernel log: Found supported sensor SONY471A:00 sysfs: cannot create duplicate filename '/kernel/software_nodes/SONY471A-0' kobject: kobject_add_internal failed for SONY471A-0 with -EEXIST intel-ipu7 0000:00:05.0: error -EEXIST: IPU bridge init failed intel-ipu7 0000:00:05.0: probe with driver intel-ipu7 failed with error -17 Expected behavior: The IPU7 driver should bind the IMX471 sensor and create camera/media devices, similar to the expected working path from Ubuntu bug #2107320: Found supported sensor SONY471A:00 Connected 1 cameras bind imx471 ... All sensor registration completed ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-15-generic 7.0.0-15.15 ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0 Uname: Linux 7.0.0-15-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: portugal 3618 F.... pipewire portugal 3640 F.... wireplumber /dev/snd/seq: portugal 3618 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Sat May 2 11:18:01 2026 InstallationDate: Installed on 2026-05-02 (1 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) MachineType: LENOVO 21Q7000LBR ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color ProcFB: 0 xedrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-15-generic root=UUID=57b10f72-ea94-4402-b27e-a35bf6019678 ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M SourcePackage: linux StagingDrivers: intel_ipu7 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/06/2025 dmi.bios.release: 1.12 dmi.bios.vendor: LENOVO dmi.bios.version: N4CET36W (1.12 ) dmi.board.asset.tag: Not Available dmi.board.name: 21Q7000LBR dmi.board.vendor: LENOVO dmi.board.version: SDK0T76576 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.8 dmi.modalias: dmi:bvnLENOVO:bvrN4CET36W(1.12):bd03/06/2025:br1.12:efr1.8:svnLENOVO:pn21Q7000LBR:pvrThinkPadX9-15Gen1:rvnLENOVO:rn21Q7000LBR:rvrSDK0T76576WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21Q7_BU_Think_FM_ThinkPadX9-15Gen1:pfaThinkPadX9-15Gen1: dmi.product.family: ThinkPad X9-15 Gen 1 dmi.product.name: 21Q7000LBR dmi.product.sku: LENOVO_MT_21Q7_BU_Think_FM_ThinkPad X9-15 Gen 1 dmi.product.version: ThinkPad X9-15 Gen 1 dmi.sys.vendor: LENOVO ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug resolute staging -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2150819 Title: Internal webcam does not work on Lenovo 21Q7000LBR after fresh Ubuntu 26.04 install. Status in linux package in Ubuntu: New Bug description: Internal webcam does not work on Lenovo 21Q7000LBR after fresh Ubuntu 26.04 install. This appears related to Ubuntu bug #2107320: https://bugs.launchpad.net/bugs/2107320 That bug added support for the Sony IMX471 / SONY471A camera sensor on Intel IPU7 platforms. My system detects the same SONY471A sensor, but the IPU7 bridge fails with a duplicate software node error before camera/media devices are created. System: - Lenovo 21Q7000LBR - Ubuntu 26.04 LTS - Kernel: 7.0.0-15-generic - intel-ipu7-dkms: 0~git202602091007.a88b1909-0ubuntu1 - Sensor appears to be Sony IMX471 / SONY471A - BIOS IntegratedCameraAccess: Enable Problem: - No /dev/video* devices are created - No /dev/media* devices are created - Camera apps cannot see the internal webcam Relevant kernel log: Found supported sensor SONY471A:00 sysfs: cannot create duplicate filename '/kernel/software_nodes/SONY471A-0' kobject: kobject_add_internal failed for SONY471A-0 with -EEXIST intel-ipu7 0000:00:05.0: error -EEXIST: IPU bridge init failed intel-ipu7 0000:00:05.0: probe with driver intel-ipu7 failed with error -17 Expected behavior: The IPU7 driver should bind the IMX471 sensor and create camera/media devices, similar to the expected working path from Ubuntu bug #2107320: Found supported sensor SONY471A:00 Connected 1 cameras bind imx471 ... All sensor registration completed ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-15-generic 7.0.0-15.15 ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0 Uname: Linux 7.0.0-15-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: portugal 3618 F.... pipewire portugal 3640 F.... wireplumber /dev/snd/seq: portugal 3618 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Sat May 2 11:18:01 2026 InstallationDate: Installed on 2026-05-02 (1 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) MachineType: LENOVO 21Q7000LBR ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color ProcFB: 0 xedrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-15-generic root=UUID=57b10f72-ea94-4402-b27e-a35bf6019678 ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M SourcePackage: linux StagingDrivers: intel_ipu7 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/06/2025 dmi.bios.release: 1.12 dmi.bios.vendor: LENOVO dmi.bios.version: N4CET36W (1.12 ) dmi.board.asset.tag: Not Available dmi.board.name: 21Q7000LBR dmi.board.vendor: LENOVO dmi.board.version: SDK0T76576 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.8 dmi.modalias: dmi:bvnLENOVO:bvrN4CET36W(1.12):bd03/06/2025:br1.12:efr1.8:svnLENOVO:pn21Q7000LBR:pvrThinkPadX9-15Gen1:rvnLENOVO:rn21Q7000LBR:rvrSDK0T76576WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21Q7_BU_Think_FM_ThinkPadX9-15Gen1:pfaThinkPadX9-15Gen1: dmi.product.family: ThinkPad X9-15 Gen 1 dmi.product.name: 21Q7000LBR dmi.product.sku: LENOVO_MT_21Q7_BU_Think_FM_ThinkPad X9-15 Gen 1 dmi.product.version: ThinkPad X9-15 Gen 1 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2150819/+subscriptions