Webcams not working on a Dell Latitude 5285
I recently installed Debian 9 and Ubuntu 17.10 on a Dell Latitude 5285 detachable laptop.
The webcams (both the rear one and the front one) are not recognized.
There is no /dev/video* file.
I am not sure what the model of the webcam is.
The Dell support website for this laptop mentions a Realtek IR webcam.
Below are my lspci and lsusb outputs, under Ubuntu 17.10, kernel 4.14.
It is not clear to me which line refers to the webcam.
$ lspci
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 02)
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 02)
00:05.0 Multimedia controller: Intel Corporation Skylake Imaging Unit (rev 01)
00:13.0 Non-VGA unclassified device: Intel Corporation Device 9d35 (rev 21)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:14.3 Multimedia controller: Intel Corporation Device 9d32 (rev 01)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 (rev 21)
00:15.1 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #1 (rev 21)
00:15.2 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #2 (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1)
00:1c.7 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #8 (rev f1)
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #9 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Device 9d4e (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Device 9d71 (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 Non-Volatile memory controller: Toshiba America Info Systems Device 0116
02:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01)
$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 8087:0a2b Intel Corp.
Bus 001 Device 004: ID 044e:1218 Alps Electric Co., Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Solution 1:
Actually, it seems this functionality depends on a new intel driver which will be included in linux-4.16: https://www.mail-archive.com/[email protected]/msg122619.html
Solution 2:
A detailed answer to this problem is provided here:
https://www.spinics.net/lists/linux-media/msg131388.html
In summary, these "complex" webcams need drivers both in kernel space and user space, and it will take some time before they are supported under linux.