[Alsa-user] Does somebody use a RME HDSPe AIO?
Does somebody use a RME HDSPe AIO with ADAT? If so, is Linux working with all 8 channels? I bought one in Mai 2011, but didn't need all channels until today. Analog IOs and ADAT 1 and 2 are ok. HDSP mixer does see incoming audio signals from all ADAT ports, so I thought everything is ok, unfortunately it isn't, the jackd ports for ADAT 3,4,5,6,7 and 8 don't work. Tested with Ubuntu Studio Precise and Quantal 64-bit (hdspmixer 1.11) and AV Linux 32-bit (hdspmixer 1.6). At the moment I need some additional channels :(. I don't think the card is broken, because HDSP mixer does show the incoming audio signals, but you never know. Since it has got a 3 year duration of cover I should check this immediately, but I don't know how to test it. Do I need to install Windows to test the card? Regards, Ralf -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_nov ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
[Alsa-user] Does somebody use a RME HDSPe AIO?
Does somebody use a RME HDSPe AIO with ADAT? If so, is Linux working with all 8 channels? I bought one in Mai 2011, but didn't need all channels until today. Analog IOs and ADAT 1 and 2 are ok. HDSP mixer does see incoming audio signals from all ADAT ports, so I thought everything is ok, unfortunately it isn't, the jackd ports for ADAT 3,4,5,6,7 and 8 don't work. Tested with Ubuntu Studio Precise and Quantal 64-bit (hdspmixer 1.11) and AV Linux 32-bit (hdspmixer 1.6). At the moment I need some additional channels :(. I don't think the card is broken, because HDSP mixer does show the incoming audio signals, but you never know. Since it has got a 3 year duration of cover I should check this immediately, but I don't know how to test it. Do I need to install Windows to test the card? Regards, Ralf -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_nov ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Ticks when playing to USB DAC at high sample rates
On Wed 07 November 2012 10:01:14 Daniel Mack wrote: On 07.11.2012 00:54, Jeffrey Barish wrote: I guess that snd_usb_pcm_prepare is called by the core usb system to prepare the snd driver. Anyway, snd_usb_pcm_prepare calls configure_endpoint with a substream. Then configure_endpoint calls snd_usb_endpoint_set_params with the data endpoint that corresponds to the substream. snd_usb_endpoint_set_params calls data_ep_set_params with the data ep and data_ep_set_params sets nurbs to 2 for the data endpoint. snd_usb_endpoint_set_params has code to call sync_ep_set_params when the endpoint is type sync. sync_ep_set_params sets nurbs to 4 (why?). However, snd_usb_endpoint_set_params never invokes the call to sync_ep_set_params because ep-type is always data. Back up: snd_usb_endpoint_set_params is called from configure_endpoint. It is called from an if block contingent on the substream's having a sync endpoint. It does. However, the call to snd_usb_endpoint_set_params passes subs-data_endpoint as the first argument, so snd_usb_endpoint_set_params simply repeats the operations it performed as a result of the previous invocation. I presume that the first argument to the second call to snd_usb_endpoint_set_params should be subs-sync_endpoint. Eh. You clearly spotted a bug here. The rally interesting thing is that that it didn't bite us earlier, as it's in since 3.6. Here's the diff. I can't figure out how to submit a patch. --- sound/usb/pcm.c.orig2012-11-08 11:43:57.309732860 -0700 +++ sound/usb/pcm.c 2012-11-08 11:41:06.512420658 -0700 @@ -456,7 +456,7 @@ static int configure_endpoint(struct snd return ret; if (subs-sync_endpoint) - ret = snd_usb_endpoint_set_params(subs-data_endpoint, + ret = snd_usb_endpoint_set_params(subs-sync_endpoint, subs-pcm_format, subs-channels, subs-period_bytes, -- Jeffrey Barish -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_nov ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
