From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Cunningham Subject: Re: Re: CMedia 8738 - problems running Jack Date: Mon, 24 Oct 2005 23:38:38 +0100 Message-ID: <20051024223838.GA25313@meep> References: <5bdc1c8b0510240924w10e1a8d1o499e3739fd8e1923@mail.gmail.com> <5bdc1c8b0510240932o6566fef2q96f1f2a5a970b771@mail.gmail.com> <20051024202157.GA11137@meep> <5bdc1c8b0510241455s1aaf8940gc408902fe06af8f@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <5bdc1c8b0510241455s1aaf8940gc408902fe06af8f@mail.gmail.com> Sender: alsa-devel-admin@lists.sourceforge.net Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Mark Knecht Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org On Mon, Oct 24, 2005 at 02:55:23PM -0700, Mark Knecht wrote: >On 10/24/05, Dave Cunningham wrote: >> On Mon, Oct 24, 2005 at 09:32:24AM -0700, Mark Knecht wrote: >> >On 10/24/05, Mark Knecht wrote: >> >> Hi, >> >> I am unable to file any bug reports with the Alsa bug system so I'm >> >> bringing the info here. Thanks in advance. >> >> >> > >> >Thanks to James and Lee this is now files as bug # 1496 >> > >> >https://85.132.177.35/alsa-bug/view.php?id=1496 >> >> >> I had and worked-around this problem, see >> >> http://boudicca.tux.org/hypermail/jackit-devel/this-month/0055.html >> >> i.e. run jack with the -o 2 parameter >> > >Dave, > Thanks very much. This does allow Jack to run in duplex mode >without crashing. No probs, took me weeks to find a solution to this, I tried every alsa version available on the site to find the point where it broke, and then diffed the code before i figured that it might be channel-related :) > Now, as things would have it, I cannot locate a cable to see if the >beast makes noise. Off to the store to buy one I guess. > > I'm not sure, in this case, how having more than 2 outputs would >serve me. As far as I can tell the machine only has a stereo output >jack. I have no idea where the other four would be used. Possibly >other machines provide a 5.1 output? Mine has plugs for front / rear / bass+centre, as well as optical ports that i've never tried heres a pic of something very similar from the net http://www.microdirect.co.uk/ProductInfo.aspx?ProductID=8462 and here is lspci -v ouput 0000:03:04.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10) Subsystem: TERRATEC Electronic GmbH: Unknown device 1144 Flags: bus master, medium devsel, latency 32, IRQ 18 I/O ports at b000 [size=256] Capabilities: [c0] Power Management version 2 I imagine the issue is the number of cards that look very similar but have different capabilities, and changing the driver to add support for features of one kind of card will break others... It's also pretty confusing why sometimes there are several stereo pcm devices to access different channels, and sometimes a single pcm device with multiple alsa "channels". Especially since this confusion is presented to the user. You should probably augment the bug report with a link to my archived jackit-devel post and the work-around, and also provide more information about exactly what kind of card you have. ------------------------------------------------------- This SF.Net email is sponsored by the JBoss Inc. Get Certified Today * Register for a JBoss Training Course Free Certification Exam for All Training Attendees Through End of 2005 Visit http://www.jboss.com/services/certification for more information