From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guido Aulisi Subject: Regression in kernel 3.19-rc5 for usb2 scarlett 18i20 Date: Sun, 25 Jan 2015 12:42:22 +0100 Message-ID: <1422186142.4719.8.camel@yoda.heavyware> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-wi0-f172.google.com (mail-wi0-f172.google.com [209.85.212.172]) by alsa0.perex.cz (Postfix) with ESMTP id A072426046F for ; Sun, 25 Jan 2015 12:42:26 +0100 (CET) Received: by mail-wi0-f172.google.com with SMTP id h11so4963138wiw.5 for ; Sun, 25 Jan 2015 03:42:26 -0800 (PST) Received: from [192.168.0.2] (host47-199-dynamic.52-79-r.retail.telecomitalia.it. [79.52.199.47]) by mx.google.com with ESMTPSA id gm10sm9433404wib.19.2015.01.25.03.42.24 for (version=TLSv1.2 cipher=AES128-GCM-SHA256 bits=128/128); Sun, 25 Jan 2015 03:42:25 -0800 (PST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Hi, I noticed a regression in 3.19-rc5 kernel (as shipped by fedora rawhide) with usb2 focusrite scarlett 18i20. I get a lot of xruns with jack, even at 1024 frame buffer and 2 periods. In 3.17.8 it works quite well without xruns at the same settings. I use a fedora 20 (64bit) laptop with 8GB ram, I only installed the rawhide kernel to try the new included scarlett mixer, no other software components changed. I can try to do some other test, but compiling the kernel on this laptop is time consuming. Thanks Guido