From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mohammad Bahathir Hashim Subject: Re: HDMI on HDA device=3 Date: Tue, 9 Nov 2010 16:24:09 +0000 (UTC) Message-ID: References: <4CD95DD9.2070102@canonical.com> Reply-To: Mohammad Bahathir Hashim Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by alsa0.perex.cz (Postfix) with ESMTP id 16D04244A4 for ; Tue, 9 Nov 2010 17:24:22 +0100 (CET) Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1PFqzd-00043J-Q8 for alsa-devel@alsa-project.org; Tue, 09 Nov 2010 17:24:21 +0100 Received: from 118.101.18.113 ([118.101.18.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 09 Nov 2010 17:24:21 +0100 Received: from bahathir by 118.101.18.113 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 09 Nov 2010 17:24:21 +0100 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org On 2010-11-09, David Henningsson wrote: > I have seen a few HDMIs which share the HDA controller with the onboard > sound card, but the codecs are different, e g the onboard one is at > address #0 and the HDMI is at address #3 - or even #3, #7, #8 and #9 in > some cases. > > Now, if the user specifies the device string hdmi:x (where x is card > name/number), I'd like it to kind of autodetect this and use DEV=3 > instead of DEV=0, and without breaking the cards where the hdmi is a > separate card with a codec at address #0. However, it still seems like > the device is at DEV=3 somehow. > > Now, looking at /usr/share/alsa/cards/HDA-Intel.conf, I notice that > there are entries HDA-Intel.pcm.hdmi.0 which sets DEV=3, so it seems > like someone already thought of this. However, just using "hdmi:x" does > not trigger "DEV=3". I'm still not grepping all of the alsa lisp > architecture stuff, so could someone explain to me how the > HDA-Intel.pcm.hdmi.0 entry relates to the "hdmi:x" alsa device string? > I am not sure about Intel HDMI, but, in my case with MacbookPro 6,2 (15" Mid 2010); the HDMI audio stream via NVIDIA HDMI can only be started if I use hw:1,7 (or Mplayer's -ao alsa:device=hw=1.7). No sound if I starts with 1,3. But, after started stream to 1,7; then, I can use 1,3. So, in this, I always started with 1,7. Since I can change the HDMI device ID on-demand with MPlayer, I have no issue with default ALSA configuration. :) Thank you.