From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Chan Subject: Re: ALC655 in CVS: Are Center/LFE switched with Surround? Date: Thu, 20 Nov 2003 00:35:10 +0800 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: <3FBB9BBE.20203@starhub.net.sg> References: <3FBB8699.10602@starhub.net.sg> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7BIT Return-path: In-reply-to: Errors-To: alsa-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: Takashi Iwai Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org Alas, the new VIA82XX.conf doesn't fix the problem. (ALC655 does not have the "Slot Modify" feature of ALC650). Also I realise I still need a plug with slave.channels 6 If I use surround51 directly I cannot get sound out of the other four speakers. This plug gives me rear sound pcm.testrear { type plug ####Aargh!! should be ttable.0.2 and ttable.0.3#### ####Changing Swap Surround Slot doesn't help### ####ALC655 does not have Slot Modify control bits in register 6A### ttable.0.4 1 ttable.1.5 1 slave.pcm surround51 slave.channels 6 } (I notice surround50.conf has the slave channels set; can something similar be put inside surround51.conf?) xine will also not product surround sound with the surround51 device - I need to use a plug with channels set to 6. Funny though mplayer works with the surround51 device (though channels are swapped). Takashi Iwai wrote: >At Wed, 19 Nov 2003 23:04:57 +0800, >Richard Chan wrote: > > >>I've finally got 5.1 out of my via82xx/ALC655 system using the >>Line-In/Mic jacks! >>Thanks Takashi. >> >> > >glad to hear that it works now. what was the problem? > > > > >>However I seem to have got Center/LFE switched with Surround. >>I.e. if I play xine & mplayer (L, R, RearL, RearR, Center, LFE) >>through surround51 I get Center/LFE switched with Rear speakers. >> >> > >ah, this reminds me an old story. >there is a mixer switch "Swap Surround Slot". and, IIRC, starngely >enough, for 5.1 this should be turned on for 5.1 output while it's off >for 4.0. > > > >>I must use the following to work in .asoundrc >>pcm_slave.sltest { >> pcm "hw:0,1" >> channels 6 >>} >> >>pcm.via51 { >> type plug >> ttable.0.0 1 >> ttable.1.1 1 >> ttable.2.4 1 >> ttable.3.5 1 >> ttable.4.2 1 >> ttable.5.3 1 >> slave sltest >>} >> >> > >this is also a solution, but the attached would be more "light" way. >copy the attached file to /usr/share/alsa/cards. >also, if you have chance, please test 4.0 output, too. > > >thanks, > >Takashi > > >------------------------------------------------------------------------ > > > > ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/