Re: [Alsa-user] Simultaneous playback problem on 3 USB cards

2012-01-03 Thread Piotr Domagalski
an 2 cards to one hub but in the same time, you can connect a second hub to the first one and put additional 2 cards there. I've successfully run 5 cards with the use of 3 hubs connected serially. -- Piotr Domagalski Mobile Systems Res

Re: [Alsa-user] Simultaneous playback problem on 3 USB cards

2012-01-03 Thread Piotr Domagalski
On 01/02/2012 04:37 PM, Piotr Domagalski wrote: > Hello! > > I've been struggling with using 3 USB cards ("C-Media USB Audio Device") > for a while now. I forgot to mention that I'm connecting these 3 USB cards through an USB 2.0 D-link hub. This seems to be

Re: [Alsa-user] Simultaneous playback problem on 3 USB cards

2012-01-02 Thread Piotr Domagalski
On Mon, 02 Jan 2012 21:35:47 +0400, Sergei Steshenko wrote: > Do the cards support "22050 Hz, Mono" ? Yes, they do. In fact, I play the exact same file on all of the cards. -- Piotr Domagalski Mobile Systems Research Labs, Poznan University

[Alsa-user] Simultaneous playback problem on 3 USB cards

2012-01-02 Thread Piotr Domagalski
CHANNELS: 1 RATE: 22050 PERIOD_TIME: (125011 125012) PERIOD_SIZE: (2756 2757) PERIOD_BYTES: (5512 5514) PERIODS: (3 5) BUFFER_TIME: 50 BUFFER_SIZE: 11025 BUFFER_BYTES: 22050 TICK_TIME: 0 Can anyone point to me where does this limitation come from? Is it something in snd-usb-audio module?