From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:39235) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QUZPP-0000n0-3A for qemu-devel@nongnu.org; Thu, 09 Jun 2011 03:12:04 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QUZPM-0003tx-I2 for qemu-devel@nongnu.org; Thu, 09 Jun 2011 03:12:02 -0400 Received: from fmmailgate03.web.de ([217.72.192.234]:40216) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QUZPL-0003tH-Rl for qemu-devel@nongnu.org; Thu, 09 Jun 2011 03:12:00 -0400 Message-ID: <4DF07218.7000903@web.de> Date: Thu, 09 Jun 2011 09:11:20 +0200 From: Jan Kiszka MIME-Version: 1.0 References: <4DEF17C1.7000805@web.de> <4DEF6FC9.8040209@redhat.com> <4DF065E9.4070605@web.de> <4DF06DED.7030604@web.de> <4DF07182.3060003@web.de> In-Reply-To: <4DF07182.3060003@web.de> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig6E800B1504CE5A45FC17582D" Sender: jan.kiszka@web.de Subject: Re: [Qemu-devel] assigned EHCI USB headset not working List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: =?ISO-8859-1?Q?Andr=E9_Weidemann?= Cc: Gerd Hoffmann , "kvm@vger.kernel.org" , qemu-devel This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig6E800B1504CE5A45FC17582D Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 2011-06-09 09:08, Andr=E9 Weidemann wrote: > Hi Jan, >=20 > On 09.06.2011 08:53, Jan Kiszka wrote: >> On 2011-06-09 08:19, Andr=E9 Weidemann wrote: >>> Hi Gerd, >>> >>> On 08.06.2011 14:49, Gerd Hoffmann wrote: >>>> Hi, >>>> >>>>> The sound device shows up under Windows7 and drivers are installed >>>>> automatically. Unfortunately it does not work. All the players I >>>>> tried, >>>>> did not even start playing the sound file, although they detected t= he >>>>> DirectSound Device. >>>> >>>> iso xfer's from usb-linux via ehci are flaky for reasons not yet >>>> tracked >>>> down. >>>> >>>> Any reason why you don't just plug in a virtual sound card? The HDA >>>> emulation should work fine with win7. >>> >>> Using the hda driver was my first attempt. But the result was not ver= y >>> convincing. When playing mp3s inside the VM, I could hear music comin= g >>> from the speakers, but the sound was very choppy and too slow. It was= no >>> joy listening to it. >> >> Does "export QEMU_AUDIO_DAC_TRY_POLL=3D0" before invoking qemu helps? = It >> depends on your host-side interface. Using ALSA here, it is generally >> required. >> >> Note that this discussion rather belongs on qemu-devel. >=20 > Thank you very much. Setting the variable did the trick. > Could this perhaps be included in the man page? I am sure there will be= > others who will eventually run into the same problem as I did. It is a long-standing issue of QEMU that I always wanted to understand but never found the time for. CC'ing malc, maybe he has a good idea how to finally attack this. Jan --------------enig6E800B1504CE5A45FC17582D Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org/ iEYEARECAAYFAk3wchgACgkQitSsb3rl5xQbkgCfY4PQlliT2SIkdw3qD7R7reKe A3gAniHIW4XB+EQ04gKwqRHkwd7tZ8HT =FyIE -----END PGP SIGNATURE----- --------------enig6E800B1504CE5A45FC17582D--