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Old 12-29-2015, 08:48 AM   #1
floppy_stuttgart
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How to activate the notebook camera ?


Hello,
on my thinkpad T520, does I have a camera?
Dmesg show:
Code:
[    8.447481] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input7
[    8.447639] ACPI: Video Device [VID] (multi-head: yes  rom: no  post: no)
But "cheese" dont detect any camera.

lspci (no cam)
Code:
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4)
00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation QM67 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04)
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
0d:00.0 System peripheral: Ricoh Co Ltd PCIe SDXC/MMC Host Controller (rev 08)
0d:00.3 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 PCIe IEEE 1394 Controller (rev 04)
lsusb (no cam)
Code:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 003: ID 0a5c:217f Broadcom Corp. Bluetooth Controller
Bus 002 Device 003: ID 17ef:1003 Lenovo Integrated Smart Card Reader
Perhaps a driver is missing?

Could it have an hidden camera?
(I am not paranoid.. and not sooo important)

Thanks for any advice!
 
Old 12-29-2015, 08:55 AM   #2
rokytnji
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No camera is on this dell e4310 of mine

Code:
$ ls -ltrh /dev/video*
ls: cannot access /dev/video*: No such file or directory
Forgot:
Code:
cd /dev
then

Code:
ls
look for video. If there. Look inside for name of camera.

Last edited by rokytnji; 12-29-2015 at 09:04 AM.
 
Old 12-29-2015, 10:05 AM   #3
michaelk
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Two sites indicate the laptop has a webcam and one does not so it might depend on the model number. From the pictures it appears the webcam is at the top center of the screen bezel. The linux laptop site indicates the webcam works so its not hidden. Make sure it is enabled in the BIOS.

https://support.lenovo.com/us/en/documents/pd015761
http://notebooks.com/2011/02/21/leno...cs-and-photos/
http://www.pcworld.com/product/12768...4242-at9-.html
http://www.linlap.com/lenovo_thinkpad_t520
 
Old 12-29-2015, 07:53 PM   #4
frankbell
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If cheese isn't working on it, you might try installing guvcview and testing with it.

You might also run the dmesg command in a terminal and search the output for a reference to a camera. That command outputs a lot of data; you may be able to prune filter the output with grep.

Code:
dmesg | grep Cam   <----or a variation thereof
On my other computer, over there ---->, that command told me that the camera is a uvc device.
 
Old 12-29-2015, 09:20 PM   #5
onlyesterday16
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Try Fn+F6 to active camera, then re-open cheese
 
Old 12-30-2015, 07:46 AM   #6
Shadow_7
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If the hardware is there and the driver functions, you'll have a /dev/video# device that is the webcam. Perhaps check dmesg for driver stuffs related to the webcam. The device seems to have firewire, maybe the webcam is connected to that port, and not pci or usb.

WebCam Integrated 2.0 MP Camera
(informative NOT!)

$ v4l2-ctl --info

Other articles seem to suggest 1280x720 video capabilities.

http://shop.lenovo.com/ISS_Static/WW..._datasheet.pdf

Fn + F6 as previously mentioned in the pdf.

http://www.linlap.com/lenovo_thinkpad_t520

suggests that the webcam works in linux

http://support.lenovo.com/us/en/downloads/ds015018

seems to be the windows driver for it.

http://www.thinkwiki.org/wiki/Integrated_camera

linux driver gspca_sn9c20x <--- this seems promising. And appears to be USB based.

-----

so Fn + F6, then
$ lsusb

# modprobe gspca_sn9c20x
 
Old 12-31-2015, 05:18 AM   #7
floppy_stuttgart
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Quote:
Originally Posted by Shadow_7 View Post
so Fn + F6, then
$ lsusb
# modprobe gspca_sn9c20x
Thanks all!
"Fn + F6" dont change anything in dmesg (before or after a modprobe).
After "modprobe gspca_sn9c20x", the output of dmesg see 4 added lines:
Code:
[ 2075.842682] Linux media interface: v0.10
[ 2075.861320] Linux video capture interface: v2.00
[ 2075.873419] gspca_main: v2.14.0 registered
[ 2075.877176] usbcore: registered new interface driver sn9c20x
BUT "lsusb" (nothing new there)
Code:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 003: ID 0a5c:217f Broadcom Corp. Bluetooth Controller
Bus 002 Device 003: ID 17ef:1003 Lenovo Integrated Smart Card Reader
"Cheese" and "guvcview" still say no device is found.
Still no "/dev/video".
Any new idea is welcome.

Last edited by floppy_stuttgart; 12-31-2015 at 06:06 AM.
 
Old 12-31-2015, 06:41 PM   #8
Shadow_7
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You might check if it's disable-able in the bios / uefi.
 
Old 01-01-2016, 04:40 AM   #9
floppy_stuttgart
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Quote:
Originally Posted by Shadow_7 View Post
You might check if it's disable-able in the bios / uefi.
I had a look: in the BIOS menu "I/O Port Access", "Integrated Camera" is "enabled".
No differences noticed between UEFI or Legacy boot.

dmesg | grep Video
Quote:
[ 9.441204] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input11
[ 9.441247] ACPI: Video Device [VID] (multi-head: yes rom: no post: no)
dmesg | grep video
Quote:
[ 0.620740] pci 0000:00:02.0: Boot video device
[ 7.102652] thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver
Any new idea is welcome.

Last edited by floppy_stuttgart; 01-01-2016 at 07:20 AM.
 
Old 03-11-2017, 03:38 PM   #10
floppy_stuttgart
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no camera in.
 
  


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