From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:34200) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TBRXo-000889-C4 for qemu-devel@nongnu.org; Tue, 11 Sep 2012 10:34:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TBRXi-0005hY-JY for qemu-devel@nongnu.org; Tue, 11 Sep 2012 10:34:28 -0400 Received: from david.siemens.de ([192.35.17.14]:26002) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TBRXi-0005hS-8c for qemu-devel@nongnu.org; Tue, 11 Sep 2012 10:34:22 -0400 Message-ID: <504F4BE3.10007@siemens.com> Date: Tue, 11 Sep 2012 16:34:11 +0200 From: Jan Kiszka MIME-Version: 1.0 References: <504A1C35.5070809@lotspeich.org> <504B23BB.2080407@web.de> <504F4948.3020809@lotspeich.org> In-Reply-To: <504F4948.3020809@lotspeich.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] Linux KVM, Windows 7 guest choppy sound List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Erik Lotspeich Cc: qemu-devel [re-adding the list] On 2012-09-11 16:23, Erik Lotspeich wrote: > On 09/08/2012 05:53 AM, Jan Kiszka wrote: >> Known issue, likely unfixable in QEMU due to hard-coded constraints of >> the driver Windows uses (too small playback buffers). > > Thanks so much for your response on this. Even though there is no > immediate fix, it is good to know that it is a known issue. > > I appreciate your suggestion regarding USB devices as well. I believe > that requires VT-d support which I cannot enable since I am one of those > unlucky users who experiences the lockups on boot with Nvidia and VT-d > enabled on my Lenovo W520. Host sound controller pass-through requires VT-d, USB device pass-through does not. Jan -- Siemens AG, Corporate Technology, CT RTC ITP SDP-DE Corporate Competence Center Embedded Linux