From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?Martin_Kr=FCger?= Subject: Re: PATCH - MIDI on ice1724 - real-time kernel problem SOLVED(?) Date: Mon, 26 May 2008 18:29:00 +0200 Message-ID: <483AE54C.3090807@gmx.de> References: <20080520112539.81C9D2484D@alsa0.perex.cz> <483847ED.8050208@gmx.de> <483A6D6F.1050108@insite.cz> <483A96E8.8090507@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Received: from mail.gmx.net (mail.gmx.net [213.165.64.20]) by alsa0.perex.cz (Postfix) with SMTP id 901B524337 for ; Mon, 26 May 2008 18:29:02 +0200 (CEST) In-Reply-To: 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: Takashi Iwai Cc: alsa-devel@alsa-project.org, Pavel Hofman List-Id: alsa-devel@alsa-project.org Takashi Iwai schrieb: > At Mon, 26 May 2008 12:54:32 +0200, > Martin Kr=FCger wrote: > = >> Pavel Hofman wrote: >> = >>> Martin Kr=FCger wrote: >>> = >>> = >>>> Pavel Hofman wrote: >>>> = >>>> Hi, = >>>> >>>> thanks a lot for taking care for that issue. = >>>> I just tried it out by modifying the following files from the 2.6.26-r= c3 kernel: >>>> >>>> sound/pci/Kconfig (modified by hand) >>>> sound/pci/ice1712/ice1712.h (modified by hand) >>>> sound/pci/ice1712/envy24ht.h (modified by hand) >>>> sound/pci/ice1712/ice1724.c (copied from the actual Git snapshot) >>>> >>>> I double-checked all the handmade changes, should be ok. = >>>> >>>> Midi in via "amidi -p hw:0 -d" works now without problem, = >>>> but when trying to write to the device, for example by "amidi -p hw:0 = -s txdata.syx" = >>>> it causes an immediate crash. = >>>> >>>> That would not be a problem for me, but jackd probes all ports, and is= unusable now. >>>> >>>> Perhaps i forgot a patch, is the output working for you? = >>>> = >>>> = >>> Hello Martin, >>> >>> I did check the MIDI output using command >>> >>> amidi -p hw:0 -S F0411042110C000000000074FF0411042110C000000 >>> >>> Ubuntu Studio 7.10, both -generic and -rt kernel, Audiotrak Prodigy 192= , = >>> the original patch (I assume the current git version is identical). >>> >>> There was no MIDI device connected to the output as I have none. >>> >>> I traced if MIDI-out on Juli goes through the Xilinx CPLD, and it seeme= d = >>> the MIDI lines go straight to the connectors, just as on my Prodigy 192= . = >>> Unfortunately, I do not have Juli available any more to test the patch. >>> >>> Please could you provide more details about the crash? >>> >>> Thanks, >>> >>> Pavel. >>> _______________________________________________ >>> Alsa-devel mailing list >>> Alsa-devel@alsa-project.org >>> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel >>> = >>> = >> Hello Pavel, >> >> i just compiled a new 2.6.25.4 kernel with realtime support. the kernel = >> is from kernel.org, so without any patches except the realtime patch = >> from the alsa wiki. >> = > > To be sure -- does 2.6.25.4 without realtime support work? > > > Takashi > = No. Not with an unpatched kernel set to "Preemptible Kernel (Low-Latency = Desktop) PREEMPT_DESKTOP". I didn't test the lower preemption modes. Martin