Affects me too on a second SKU/BIOS, with details that may help narrow this down.
Hardware / software - Lenovo ThinkPad X1 Carbon Gen 14, product 21V70071IX, BIOS N4OET47W (1.10) 03/30/2026 - Intel Core Ultra 7 355 (Panther Lake), IPU7 PCI 8086:b05d, Secure Boot enabled - Ubuntu 26.04.1 LTS, kernel 7.0.0-42-generic, libcamera 0.7.0 (0.7.0-1ubuntu2) - intel-ipu7-dkms is NOT installed: I'm on the in-kernel (staging) intel_ipu7 / intel_ipu7_isys Symptoms (same as the original report) - IPU7 firmware loads; kernel log: "intel-ipu7 0000:00:05.0: Found supported sensor TBE20A0:00" and "Connected 1 cameras" - /dev/video0../dev/video31 and /dev/media0 exist; GNOME Snapshot (Aperture 0.12) lists ~30 raw "ipu7 (V4L2)" nodes and no usable camera - `cam -l`: "SimplePipeline simple.cpp:1899 No sensor found for /dev/media0" -> "Available cameras:" (empty) - `media-ctl -d /dev/media0 -p` shows only "Intel IPU7 ISYS Capture N" entities, no sensor subdev Additional findings - Two sensor devices are present on the I2C bus, i2c-TBE20A0:00 and i2c-TBE20A1:00 (ACPI \_SB.LNK0 / \_SB.LNK1, status 15). Neither has a driver bound. I did not see TBE20A1 mentioned in the bug so far. - No in-kernel module claims these IDs: only ipu-bridge references "TBE20A". - I downloaded (without installing) the archive packages and checked: * intel-ipu7-dkms 0~git202602091007: ships the IPU7 core and ov02c10, but nothing for TBE20A0/IMX471 * linux-modules-7.0.0-1017-oem: identical set of 733 drivers/media modules to 7.0.0-42-generic; no imx471 - This matches comment #3 (TBE20A0 = Sony IMX471, no imx471 driver in any packaged module). As I understand it, the upstream imx471 driver and the ipu-bridge entry for the X1 Carbon Gen 14 land in mainline 7.3. Question: is a backport of the IMX471 driver and the ipu-bridge/int3472 changes planned for the 7.0 kernel (generic and/or OEM) in 26.04? Happy to test any kernel or PPA build and attach logs if needed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2156567 Title: ThinkPad X1 Carbon Gen 14 (21V7CTO1WW) camera detected by IPU7 driver but not exposed to libcamera To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/2156567/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
