My laptop's internal webcam stopped being detected at some point in the last weeks. I do not use that webcam often and various things happened in that period, such as minor kernel updates and a BIOS update, so it was not immediately clear where the cause lay. After some investigation, I found the following in my logs: xhci_hcd 0000:06:00.0: Direct firmware load for renesas_usb_fw.mem failed with error -2 xhci_hcd 0000:06:00.0: request_firmware failed: -2 xhci_hcd: probe of 0000:06:00.0 failed with error -2 Reverting to an earlier kernel version (5.10.52→5.10.49), this message disappears and the webcam is detected again. This makes me suspect there is some kind of regression after 5.10.49. A related report can be found at https://forums.lenovo.com/t5/Other-Linux-Discussions/Possible-1-34-BIOS-bug-on-P14s-AMD/m-p/5089865 There, the assumption is that this is related to the BIOS update. Given my tests, there certainly is a kernel component to the issue.
On Tue, Aug 24, 2021 at 06:54:45AM +0000, bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=214155 > > Bug ID: 214155 > Summary: regression 5.10.49→5.10.52: Direct firmware load for > renesas_usb_fw.mem failed with error -2 This should already be resolved on the latest 5.10.y kernel release. Please upgrade and let us know if that does not solve the issue. thanks, greg k-h
Thanks. Moving to 5.10.60 fixed this issue. For others' reference, see https://lore.kernel.org/linux-usb/20210719070519.41114-1-mdf@kernel.org/