Public bug reported:
Hardware: Lenovo ThinkPad X9-14 Gen 1, Intel Core Ultra 7 258V (Lunar Lake),
IPU7 [8086:645d] rev 04, MIPI sensor Sony IMX471 (ACPI HID SONY471A:00).
OS: Ubuntu 26.04 (resolute), kernel 7.0.0-22-generic.
Stack: native in-kernel intel_ipu7 (staging) + ipu_bridge, libcamera 0.7.0.
Symptom: the IPU7 PCI probe aborts during bridge init. No /dev/media* or
/dev/video* node is created; libcamera (cam -l) lists 0 cameras.
The driver detects the sensor and then fails deterministically:
intel-ipu7 0000:00:05.0: Found supported sensor SONY471A:00
ipu_bridge_connect_sensor+0x10a/0x2b0 [ipu_bridge]
ipu_bridge_init+0x1c7/0x250 [ipu_bridge]
ipu7_isys_init.constprop.0+0x85/0x1a2 [intel_ipu7]
ipu7_pci_probe.cold+0x50a/0x8fa [intel_ipu7]
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
Reproducible on every boot and on module reload (modprobe -r/modprobe).
Tried: purged intel-ipu7-dkms so only the native signed module
(linux-main-modules-ipu7-7.0.0-22-generic, intel_ipu7 marked (C)) is used.
The -EEXIST persists with the pure native stack, so this is not a DKMS conflict.
Expected: probe should complete as in LP #2107320 for the same laptop, i.e.
"Found supported sensor SONY471A:00" -> "Connected 1 cameras" -> CSE BOOT_LOAD
/ AUTHENTICATE_RUN -> "bind imx471". This looks like a regression in the
upstreamed IPU7/ipu-bridge staging path vs the OEM-kernel + ipu6-drivers path.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-22-generic 7.0.0-22.22
ProcVersionSignature: Ubuntu 7.0.0-22.22-generic 7.0.0
Uname: Linux 7.0.0-22-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: rafahead 3861 F.... pipewire
rafahead 3867 F.... wireplumber
/dev/snd/controlC1: rafahead 3867 F.... wireplumber
/dev/snd/seq: rafahead 3861 F.... pipewire
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Wed Jun 3 16:38:12 2026
InstallationDate: Installed on 2026-06-02 (1 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
IwDevWlp0s20f3Link: Not connected.
MachineType: LENOVO 21QA0035US
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 xedrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-22-generic
root=UUID=e19479e7-58dd-4e84-ad0e-78c374e3b761 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: 02/11/2026
dmi.bios.release: 1.22
dmi.bios.vendor: LENOVO
dmi.bios.version: N4DET39W (1.22 )
dmi.board.asset.tag: Not Available
dmi.board.name: 21QA0035US
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76576 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.19
dmi.modalias:
dmi:bvnLENOVO:bvrN4DET39W(1.22):bd02/11/2026:br1.22:efr1.19:svnLENOVO:pn21QA0035US:pvrThinkPadX9-14Gen1:rvnLENOVO:rn21QA0035US:rvrSDK0T76576WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21QA_BU_Think_FM_ThinkPadX9-14Gen1:pfaThinkPadX9-14Gen1:
dmi.product.family: ThinkPad X9-14 Gen 1
dmi.product.name: 21QA0035US
dmi.product.sku: LENOVO_MT_21QA_BU_Think_FM_ThinkPad X9-14 Gen 1
dmi.product.version: ThinkPad X9-14 Gen 1
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute staging wayland-session
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https://bugs.launchpad.net/bugs/2155194
Title:
intel-ipu7: "IPU bridge init failed" -EEXIST on ThinkPad X9-14 Gen 1
(SONY471A/IMX471) — camera not detected, 7.0.0-22-generic
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