WebCam stopped working on Asus Laptop

[kungfoo]

Hello, everyone.

Problem

I have two Asus laptops with Manjaro XFCE, in both the integrated webcam stopped working suddenly.
I believe it’s related to an update but I’m not sure.

Webcam is not even detected now. (i.e. no /dev/video* file in fs)

note on more posts on this topic

I found a lot of post on this regard, but none of those helped me, so I’m posting a new one.

facts

Manjaro LiveCD (or USB stick) works Ok, it recognizes the webcam.

information

Here some information I collected from one of the two laptops ( ASUS ZenBook UM431D):

$ uname -r
5.15.21-1-MANJARO

$ yay -Q linux-headers
linux515-headers 5.15.21-1

$ v4l2-ctl -l
Cannot open device /dev/video0, exiting.

$ ls /dev/video*
ls: no se puede acceder a '/dev/video*': No existe el fichero o el directorio

$ sudo rmmod uvcvideo && sudo modprobe uvcvideo
$ sudo dmesg | grep uvc
[   10.392005] uvcvideo: probe of 3-2.1:1.0 failed with error -22
[   10.392097] usbcore: registered new interface driver uvcvideo
[  373.818573] usbcore: deregistering interface driver uvcvideo
[  373.933825] usbcore: registered new interface driver uvcvideo

$ lsusb
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

$ lspci

00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 IOMMU
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 PCIe GPP Bridge [6:0]
00:01.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 PCIe GPP Bridge [6:0]
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Internal PCIe GPP Bridge 0 to Bus A
00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Internal PCIe GPP Bridge 0 to Bus B
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 61)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 7
01:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
02:00.0 Non-Volatile memory controller: SK hynix BC501 NVMe Solid State Drive
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Picasso/Raven 2 [Radeon Vega Series / Radeon Vega Mobile Series] (rev c1)
03:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP Audio Controller
03:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor
03:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Raven USB 3.1
03:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Raven USB 3.1
03:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD] Raven/Raven2/FireFlight/Renoir Audio Processor
03:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) HD Audio Controller
04:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 61)

Thanks.

[andreas85]

What about trying another kernel (5.10 ???)

How to increase your chances of solving your issue:

[HowTo] Increase your chances of solving your issue

Difficulty: ★☆☆☆☆ Strong of its many members, the Manjaro support forum can provide you help whenever you have an issue with your Manjaro installation. But in order to work efficiently, we shall also ask you to follow a few major points. Provide context Simply signaling an issue is rarely enough to understand how it occurred. It is thus important to provide details on how it happened: Detail prior actions leading to the issue. Provide any related error messages. [HowTo] Find error logs. L…

Please provide Information:

[HowTo] Provide System Information

Welcome to Manjaro! To allow all of us helpful people on this forum TO HELP YOU, we need some basic information about your system. This probably means you described the symptoms of your problem, but now we need some more information to know where the origin of your issue is exactly. Someone else probably linked you to this tutorial, so if you’re reading this in response to a question, please click the link above this text to bring you to the full and unabridged text of the tutorial…

[kungfoo]

Hey, thanks, I tried… I downgraded to 5.10 but it was the same. (downgraded and installed the headers for the new kernel)

[leledumbo]

This is hard, typically webcams are connected through internal USB hub, and I don’t see one in your lsusb output. However, you haven’t scanned dmesg, which may have some info. Try:

$ dmesg | grep -i uvc

[kungfoo]

Thanks, @leledumbo , the output is already added to the OP.

I found a funny fact now. The problem is like this:

• if I power on the laptop with the power cord in, the webcam works
• if I power on the laptop without the power cord (aka on battery), the webcam does not work

I don’t know where to start looking for clues… if anyone can help I’ll appreciate it!