Re: Kworld usb 2800D audio
wow, I'm just glad you and other kernel devs take the time to figure all this out! -Tim On Thu, Oct 28, 2010 at 8:51 AM, Devin Heitmueller wrote: > On Thu, Oct 28, 2010 at 10:48 AM, Tim Stowell wrote: >> Ah my bad, I need to read a little deeper it seems :) Thanks for the >> info, now I'll stop pulling my hair out trying to get non-existent >> audio. > > If it's any consolation, I had to rip one of the units apart and break > out a scope to come to that conclusion. > > Devin > > -- > Devin J. Heitmueller - Kernel Labs > http://www.kernellabs.com > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Kworld usb 2800D audio
On Thu, Oct 28, 2010 at 10:48 AM, Tim Stowell wrote: > Ah my bad, I need to read a little deeper it seems :) Thanks for the > info, now I'll stop pulling my hair out trying to get non-existent > audio. If it's any consolation, I had to rip one of the units apart and break out a scope to come to that conclusion. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Kworld usb 2800D audio
Ah my bad, I need to read a little deeper it seems :) Thanks for the info, now I'll stop pulling my hair out trying to get non-existent audio. -Tim On Thu, Oct 28, 2010 at 8:45 AM, Devin Heitmueller wrote: > On Thu, Oct 28, 2010 at 10:36 AM, Tim Stowell wrote: >> Thanks for the response! That makes sense about the 2.5 mm cable. Not >> to be obstinate or anything but I found this link >> http://video4linux-list.1448896.n2.nabble.com/SUCCESS-KWorld-VS-USB2800D-recognized-as-PointNix-Intra-Oral-Camera-No-Composite-Input-td3069455.html >> where the users claims they were able to get a new capture device that >> didn't require using the 2.5mm cable, although I'm not sure how they >> did it. I guess I'm hoping to not have to buy a sound card for capture >> if at all possible as I'm using an embedded pc that doesn't have any >> sound cards, thanks > > Read my response in the second message in that thread you provided a > link for. :-) > > The fact that the ALSA device was being created was actually a bug in > the em28xx driver. The hardware does not support capture over the > USB. > > There are other devices which do support audio over the USB - the > limitation is specific to this particular product. > > Devin > > -- > Devin J. Heitmueller - Kernel Labs > http://www.kernellabs.com > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Kworld usb 2800D audio
On Thu, Oct 28, 2010 at 10:36 AM, Tim Stowell wrote: > Thanks for the response! That makes sense about the 2.5 mm cable. Not > to be obstinate or anything but I found this link > http://video4linux-list.1448896.n2.nabble.com/SUCCESS-KWorld-VS-USB2800D-recognized-as-PointNix-Intra-Oral-Camera-No-Composite-Input-td3069455.html > where the users claims they were able to get a new capture device that > didn't require using the 2.5mm cable, although I'm not sure how they > did it. I guess I'm hoping to not have to buy a sound card for capture > if at all possible as I'm using an embedded pc that doesn't have any > sound cards, thanks Read my response in the second message in that thread you provided a link for. :-) The fact that the ALSA device was being created was actually a bug in the em28xx driver. The hardware does not support capture over the USB. There are other devices which do support audio over the USB - the limitation is specific to this particular product. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Kworld usb 2800D audio
Thanks for the response! That makes sense about the 2.5 mm cable. Not to be obstinate or anything but I found this link http://video4linux-list.1448896.n2.nabble.com/SUCCESS-KWorld-VS-USB2800D-recognized-as-PointNix-Intra-Oral-Camera-No-Composite-Input-td3069455.html where the users claims they were able to get a new capture device that didn't require using the 2.5mm cable, although I'm not sure how they did it. I guess I'm hoping to not have to buy a sound card for capture if at all possible as I'm using an embedded pc that doesn't have any sound cards, thanks -Tim On Thu, Oct 28, 2010 at 8:27 AM, Devin Heitmueller wrote: > On Thu, Oct 28, 2010 at 10:18 AM, Tim Stowell wrote: >> Hi, >> >> I'm able to capture video just fine with my Kworld usb 2800D usb >> device and the recent (I've installed the April v4l-dvb em28xx >> driver), but I can't get any audio. I tried modprobe em28xx-alsa, and >> the module loads, but alsa can't find any sound cards. Do I need the >> snd-usb-audio driver? the usb device is based on the em2860 chip. Any >> help would be greatly appreciated, thanks. > > Hello Tim, > > If I recall, the KWorld 2800D doesn't actually capture audio directly > via the USB. The device has a 2.5mm cable that you are required to > connect to our sound card's line-in. > > Devin > > -- > Devin J. Heitmueller - Kernel Labs > http://www.kernellabs.com > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Kworld usb 2800D audio
On Thu, Oct 28, 2010 at 10:18 AM, Tim Stowell wrote: > Hi, > > I'm able to capture video just fine with my Kworld usb 2800D usb > device and the recent (I've installed the April v4l-dvb em28xx > driver), but I can't get any audio. I tried modprobe em28xx-alsa, and > the module loads, but alsa can't find any sound cards. Do I need the > snd-usb-audio driver? the usb device is based on the em2860 chip. Any > help would be greatly appreciated, thanks. Hello Tim, If I recall, the KWorld 2800D doesn't actually capture audio directly via the USB. The device has a 2.5mm cable that you are required to connect to our sound card's line-in. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Kworld usb 2800D audio
Hi, I'm able to capture video just fine with my Kworld usb 2800D usb device and the recent (I've installed the April v4l-dvb em28xx driver), but I can't get any audio. I tried modprobe em28xx-alsa, and the module loads, but alsa can't find any sound cards. Do I need the snd-usb-audio driver? the usb device is based on the em2860 chip. Any help would be greatly appreciated, thanks. -Tim -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
