Lenovo W500 – Part 5

Today I decided to get the webcam working which can be found above the display, integrated into the case. Fact is, I haven’t really looked at the device, as it wasn’t listed as such. As there are no unknown devices at the PCI bus, we can narrow our search to the USB bus which looks like that:

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 003: ID 046d:c049 Logitech, Inc. G5 Laser Mouse
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 005: ID 17ef:4807 Lenovo
Bus 001 Device 004: ID 04b3:4485 IBM Corp. Serial Converter
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 003: ID 0a5c:2145 Broadcom Corp.
Bus 004 Device 002: ID 08ff:2810 AuthenTec, Inc.
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Do you see a camera device listed? Let’s have a closer look by excluding the things that can’t be one. So there’s a bunch of HUBs, a Mouse, an AuthenTec device and a Broadcom thing we can safely exclude. So all that remains is that strange device named Lenovo. lsusb -vvv confirms that it is a device that is able to deliver pictures and mpg streams – a camera indeed.

Regarding the drivers, the chip itself is supported by the UVC driver which is already included in the kernel. As dmesg shows, our strange device is supported:

uvcvideo: Found UVC 1.00 device (17ef:4807)
input: UVC Camera (17ef:4807) as /devices/pci0000:00/0000:00:1a.7/usb1/1-6/1-6:1.0/input/input11
usbcore: registered new interface driver uvcvideo

Now all that’s left is using some software to check /dev/video0 which shouldn’t be a big deal at all…

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4 Responses

  1. longint says:

    Ah, schreibst Du das jeweils Duetsch und English?
    Kann es sein, daß mein (niegelnagelneuer) W500 keine Kamera hat?
    Funktioniert Deine Backlight Control?
    Könntest Du Bitte mal Deine Kernel .config posten oder mir zumailen?

  2. Stargazer says:

    Ich schreibe multilingual um eine größere Reichweite zu haben.

    Die Backlight-Control funktioniert bei mir via ACPI. Komischerweise ziemlich Problemlos. Mein einziges wirkliches Sorgenkind ist hier die ATI Graphikkarte. Aber ich checke mal alle Komponenten durch und bei der Gelegenheit meine .config posten.

  3. martin says:

    hi,

    altes thema, neu aufgewärmt.

    gibt es ne möglichkeit das bild meiner cam zu steuern??? finde es ist viel zu dunkel im Vergleich zu windows.

  4. Stargazer says:

    So weit ich weiss ist das nur Software

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