System: Debian Jessie x64. (Using qv4l2). I've got a USB video grabber called "conrad usb grabber usb-472", essentially it's a no-name-branding. It's recognized as saa7113 by the saa7115 driver. The device has one video input (chinch, yellow) and a stereo input (red and white). The driver does recognize three video inputs (green/yellow/red), neither of them works: No frame recognized. I verified the camera to supply a correct signal. Trying to use MMIO, qv4l2 will hang and needs to be killed. Trying to use read(), I get a black screen. (Sorry if this isn't the correct list. I'm OK with just throwing the thing away, but if fixing it is an option, I'll help.) uname -a Linux be10 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1 (2016-12-30) x86_64 GNU/Linux lsusb: Bus 003 Device 002: ID 0573:0400 Zoran Co. Personal Media Division (Nogatech) D-Link V100 dmesg: [ 7518.194350] usb 3-2: new full-speed USB device number 2 using ohci-pci [ 7518.371408] usb 3-2: New USB device found, idVendor=0573, idProduct=0400 [ 7518.371420] usb 3-2: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 7519.217042] usbvision_probe: D-Link V100 found [ 7519.217461] USBVision[0]: registered USBVision Video device video1 [v4l2] [ 7519.217505] usbcore: registered new interface driver usbvision [ 7519.217507] USBVision USB Video Device Driver for Linux : 0.9.11 [ 7519.902857] saa7115 5-0025: saa7113 found @ 0x4a (usbvision-3-2)
