From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Cree Subject: Re: [regression] 2.6.25-rc4 snd-es18xx broken on Alpha Date: Mon, 10 Mar 2008 20:34:24 +1300 Message-ID: <47D4E480.3090309@orcon.net.nz> References: <20080309235800.17D26DBA2@gherkin.frus.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20080309235800.17D26DBA2@gherkin.frus.com> Sender: linux-alpha-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Bob Tracy Cc: Ivan Kokshaysky , linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org Bob Tracy wrote: > Supposedly with the ES1888, dma1 is for capture, dma2 is for > playback. dma2 == 5 is a 16-bit channel, yes? That could explain > much... > > As for the values "chosen" for dma1 and dma2, they are the ones that > keep showing up in the Alpha sound "howto" postings/documents. Running 'show config' in SRM on my Alphas (PWS500au and XP1000) reveals the settings (except possibly for mpu_port) for the ESS1888 sound chip. I recall that they are as reported in Alpha sound howtos. I hadn't been using the ESS1888 for awhile, but have just tried it out since you reported problems. I am running kernel 2.6.24.3 and Debian testing on the XP1000. I tried playing a number of wav files with alsa's aplay, sox's play and with mocp. I found that aplay and mocp worked reliably through the ESS1888. Sox's play on some files did play back a small extra segment of the file - particularly on short files and usually some section near the end of the file - once it had completed playing the file once; maybe this is what you are also observing. More onerously, my testing eventually ended in a complete system lock up! I ran play (or was it aplay - sorry can't remember now) and the system locked up. Got a response with ping across the network but couldn't log in via ssh. Have been playing mplayer through the ESS1888 for the last couple of days (don't like it though - the sound quality of the ESS1888 is not good enough for my ears) and haven't had another one of those lockups since. Cheerz Michael.