[Bug 2155780] Re: P14s Gen 4 AMD (21K50012US) camera not working - AMDI0052 not supported by amd_isp4 driver

** Tags added: kernel-daily-bug -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2155780 Title: P14s Gen 4 AMD (21K50012US) camera not working - AMDI0052 not supported by amd_isp4 driver Status in linux package in Ubuntu: New Bug description: Machine: Lenovo ThinkPad P14s Gen 4 AMD Model: 21K50012US BIOS: R2FET69W (1.49) 03/19/2026 CPU: AMD Ryzen 7 PRO 7840U Kernel: 7.0.0-1005-oem (Ubuntu 26.04 Resolute) OS: Ubuntu 26.04 Problem: Built-in camera not detected. No /dev/video* devices appear. Root cause identified: PCI device 65:00.1 AMD IPU Device (0x1502) is present and detected. The amd_isp4 kernel module loads but does not bind because it only has OMNI5C10 in its ACPI match table. This machine has AMDI0052/AMDI0053 ACPI devices which have no matching driver. $ sudo modinfo amd_isp4 | grep alias alias: acpi*:OMNI5C10:* The ACPI devices AMDI0052 and AMDI0053 are present in the DSDT but are bare stubs with no I2C/sensor resources. The sensor model and I2C address for this board variant are unknown — AMD/Lenovo need to provide this info and update the driver. Steps to reproduce: Fresh Ubuntu install on this hardware. Camera never works. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2155780/+subscriptions