Hi Paul, On Fri, Dec 11, 2020 at 09:52:08AM +0100, Paul Menzel wrote: > Dear Sean, > > > I am sorry for the late reply. > > > Am 24.06.20 um 11:13 schrieb Sean Young: > > On Sun, May 24, 2020 at 02:07:46PM +0200, Paul Menzel wrote: > > > Add the USB vendor and product ID of the TerraTec G3 [1], so Linux > > > detects the device. > > > > Does the device work, i.e. audio, composite and s-video? Or is it > > only detected? > > Testing this quickly with a self-built Linux kernel, after plugging it in, I > couldn’t find a V4L device created for testing. > > > [ 5298.437946] usb 1-3: new high-speed USB device number 4 using xhci_hcd > > [ 5298.584284] usb 1-3: config 1 interface 0 altsetting 1 endpoint 0x82 has invalid wMaxPacketSize 0 > > [ 5298.584286] usb 1-3: config 1 interface 0 altsetting 1 endpoint 0x84 has invalid wMaxPacketSize 0 > > [ 5298.584288] usb 1-3: config 1 interface 0 altsetting 2 endpoint 0x84 has invalid wMaxPacketSize 0 > > [ 5298.584289] usb 1-3: config 1 interface 0 altsetting 3 endpoint 0x84 has invalid wMaxPacketSize 0 > > [ 5298.584291] usb 1-3: config 1 interface 0 altsetting 4 endpoint 0x84 has invalid wMaxPacketSize 0 > > [ 5298.584292] usb 1-3: config 1 interface 0 altsetting 5 endpoint 0x84 has invalid wMaxPacketSize 0 > > [ 5298.584294] usb 1-3: config 1 interface 0 altsetting 6 endpoint 0x84 has invalid wMaxPacketSize 0 > > [ 5298.584295] usb 1-3: config 1 interface 0 altsetting 7 endpoint 0x84 has invalid wMaxPacketSize 0 > > [ 5298.599286] usb 1-3: New USB device found, idVendor=0ccd, idProduct=10a7, bcdDevice= 1.00 > > [ 5298.599288] usb 1-3: New USB device strings: Mfr=2, Product=1, SerialNumber=0 > > [ 5298.599290] usb 1-3: Product: TerraTec G3 > > [ 5298.599291] usb 1-3: Manufacturer: TerraTec Electronic GmbH > > [ 5298.620437] mc: Linux media interface: v0.10 > > [ 5298.628547] videodev: Linux video capture interface: v2.00 > > [ 5298.633969] em28xx 1-3:1.0: New device TerraTec Electronic GmbH TerraTec G3 @ 480 Mbps (0ccd:10a7, interface 0, class 0) > > [ 5298.633971] em28xx 1-3:1.0: Video interface 0 found: isoc > > [ 5298.693271] em28xx 1-3:1.0: chip ID is em2860 > > [ 5298.855294] em28xx 1-3:1.0: EEPROM ID = 1a eb 67 95, EEPROM hash = 0xd7a2f285 > > [ 5298.855296] em28xx 1-3:1.0: EEPROM info: > > [ 5298.855297] em28xx 1-3:1.0: AC97 audio (5 sample rates) > > [ 5298.855298] em28xx 1-3:1.0: 500mA max power > > [ 5298.855300] em28xx 1-3:1.0: Table at offset 0x06, strings=0x1a9e, 0x346a, 0x0000 > > [ 5298.925978] em28xx 1-3:1.0: Identified as Terratec Grabby (card=67) > > [ 5298.925981] em28xx 1-3:1.0: analog set to isoc mode. > > [ 5298.926102] em28xx 1-3:1.1: audio device (0ccd:10a7): interface 1, class 1 > > [ 5298.926110] em28xx 1-3:1.2: audio device (0ccd:10a7): interface 2, class 1 > > [ 5298.926122] usbcore: registered new interface driver em28xx > > [ 5298.939683] em28xx 1-3:1.0: Registering V4L2 extension > > [ 5298.969288] em28xx 1-3:1.0: Config register raw data: 0x50 > > [ 5298.999281] em28xx 1-3:1.0: AC97 vendor ID = 0x83847650 > > [ 5299.014280] em28xx 1-3:1.0: AC97 features = 0x6a90 > > [ 5299.014281] em28xx 1-3:1.0: Empia 202 AC97 audio processor detected > > [ 5300.929118] usb 1-3: Decoder not found > > [ 5300.929121] em28xx 1-3:1.0: failed to create media graph > > [ 5300.929124] em28xx 1-3:1.0: V4L2 device vbi0 deregistered > > [ 5300.929204] em28xx 1-3:1.0: V4L2 device video0 deregistered > > [ 5300.929270] em28xx: Registered (Em28xx v4l2 Extension) extension > > Can you see from the logs, what is missing? Can I force loading em28xx > without the patch with the standard Debian Linux kernel to rule out it’s > related to my Linux kernel configuration? Looks like it can't find the decoder, not sure this is anything to do with your kernel config. This device probably has a different decoder than the other Grabby device. You could try to set the decoder field for the device to EM28XX_TVP5150 and see what happens, or open the device and see if you can find what decoder it uses. Sean
