Hi there, Please find below a few lines from my latest reboot; camera is recognized, sensor supported by ipu6, but *i2c_desingware controller times out*, reports failing to find sensor. Found many such complaints online, but no posted solutions; as for others, all worked well in Bookworm: ... kernel: usb 3-4: new high-speed USB device number 4 using xhci_hcd (862) kernel: usb 3-4: New USB device found, idVendor=04f2, idProduct=b6d6, bcdDevice=71.16 kernel: usb 3-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 kernel: usb 3-4: Product: Integrated RGB Camera kernel: usb 3-4: Manufacturer: SunplusIT Inc kernel: usb 3-4: SerialNumber: 01.00.00 ... kernel: intel-ipu6 0000:00:05.0: enabling device (0000 -> 0002) kernel: intel-ipu6 0000:00:05.0: IPU6 in secure mode touch 0x0 mask 0xff kernel: intel-ipu6 0000:00:05.0: FW version: 20230925 kernel: intel-ipu6 0000:00:05.0: Found supported sensor OVTI8856:00 kernel: intel-ipu6 0000:00:05.0: Connected 1 cameras kernel: intel-ipu6 0000:00:05.0: Sending BOOT_LOAD to CSE kernel: cfg80211: Loading compiled-in X.509 certificates for regulatory database kernel: Loaded X.509 cert '[email protected]: 577e021cb980e0e820821ba7b54b4961b8b4fadf' kernel: Loaded X.509 cert '[email protected]: 3abbc6ec146e09d1b6016ab9d6cf71dd233f0328' kernel: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7' kernel: Loaded X.509 cert 'wens: 61c038651aabdcf94bd0ac7ff06c7248db18c600' kernel: intel_pmc_core INT33A1:00: initialized kernel: intel-ipu6 0000:00:05.0: Sending AUTHENTICATE_RUN to CSE ... kernel: intel-ipu6 0000:00:05.0: CSE authenticate_run done kernel: intel-ipu6 0000:00:05.0: IPU6-v0[9a19] hardware version 1 ... kernel: usb 3-4: Found UVC 1.50 device Integrated RGB Camera (04f2:b6d6) ... kernel: usb 3-4: Found UVC 1.50 device Integrated RGB Camera (04f2:b6d6) ... kernel: usbcore: registered new interface driver btusb ... kernel: usbcore: registered new interface driver uvcvideo ... kernel: i2c_designware i2c_designware.2: controller timed out kernel: ov8856 i2c-OVTI8856:00: failed to find sensor: -5 kernel: ov8856 i2c-OVTI8856:00: probe with driver ov8856 failed with error -5 ... systemd[1860]: Listening on pipewire.socket - PipeWire Multimedia System Sockets. ... systemd[1860]: Started pipewire.service - PipeWire Multimedia Service. systemd[1860]: Started filter-chain.service - PipeWire filter chain daemon. systemd[1860]: Started wireplumber.service - Multimedia Service Session Manager. ... wireplumber[1906]: [0:01:09.072057365] [1906] INFO Camera camera_manager.cpp:327 libcamera v0.4.0 wireplumber[1906]: [0:01:09.085632524] [1973] INFO SimplePipeline simple.cpp:1581 No sensor found for /dev/media0 ... pipewire[1904]: [0:01:10.464810887] [1904] INFO Camera camera_manager.cpp:327 libcamera v0.4.0 pipewire[1904]: [0:01:10.478800085] [2273] INFO SimplePipeline simple.cpp:1581 No sensor found for /dev/media0 ... wireplumber[2776]: [0:01:24.766627313] [2776] INFO Camera camera_manager.cpp:327 libcamera v0.4.0 ... wireplumber[2776]: [0:01:24.799654280] [2880] INFO SimplePipeline simple.cpp:1581 No sensor found for /dev/media0 ... pipewire[2773]: [0:01:25.997802449] [2773] INFO Camera camera_manager.cpp:327 libcamera v0.4.0 pipewire[2773]: [0:01:26.014076146] [2995] INFO SimplePipeline simple.cpp:1581 No sensor found for /dev/media0 ... systemd[1860]: Stopped filter-chain.service - PipeWire filter chain daemon. systemd[1860]: Stopping wireplumber.service - Multimedia Service Session Manager... wireplumber[1906]: wireplumber: stopped by signal: Terminated wireplumber[1906]: m-dbus-connection: WpDBusConnection:0x5587e8bb9380 DBus connection closed: Underlying GIOStream returned 0 bytes on an async read wireplumber[1906]: m-dbus-connection: WpDBusConnection:0x5587e8bb9380 Trying to reconnect after core sync wireplumber[1906]: wireplumber: disconnected from pipewire systemd[1860]: Stopped wireplumber.service - Multimedia Service Session Manager. systemd[1860]: Stopping pipewire.service - PipeWire Multimedia Service... systemd[1860]: Stopped pipewire.service - PipeWire Multimedia Service. ...
Not sure the wireplumber entries are relevant, but this package was mentioned under "issues to be aware of" when upgrading to Trixie - yet in the log above the i2c controller issue arises before wireplumber gets started... Looking forward to hearing about solutions - or what other checks to report. Many thanks in advance, best, Kai
