From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45338) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xni5u-0006PY-EC for qemu-devel@nongnu.org; Mon, 10 Nov 2014 01:04:58 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Xni5p-0000OZ-Rv for qemu-devel@nongnu.org; Mon, 10 Nov 2014 01:04:54 -0500 Received: from szxga02-in.huawei.com ([119.145.14.65]:14422) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xni5o-0000OR-Eo for qemu-devel@nongnu.org; Mon, 10 Nov 2014 01:04:49 -0500 Message-ID: <54605561.2060405@huawei.com> Date: Mon, 10 Nov 2014 14:04:17 +0800 From: Gonglei MIME-Version: 1.0 References: <20141026182810.4047.56419.malonedeb@soybean.canonical.com> <20141108184717.8421.94632.malone@gac.canonical.com> In-Reply-To: <20141108184717.8421.94632.malone@gac.canonical.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [Bug 1385934] Re: USB with passthrougth guest cannot enumerate USB host List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Bug 1385934 <1385934@bugs.launchpad.net> Cc: MikeFrysinger , qemu-devel@nongnu.org On 2014/11/9 2:47, MikeFrysinger wrote: > the problem is this commit: > http://git.qemu.org/?p=qemu.git;a=commit;h=b791c3b38c7969cb9f4acda8229e19fd865a1c08 > > it's easy to reproduce -- plug in a USB flash drive and try to pass it > through > What's your USB flash drive's version? USB1.1 or USB2.0 or 3.0? Please post the value: 1.cat /sys/bus/usb/device/xx-xx/speed [xx-xx: hostbus-hostport] 2.And your exact command line launched Qemu . Best regards, -Gonglei > on the host: > $ lsusb > Bus 003 Device 004: ID 1307:0163 Transcend Information, Inc. 256MB/512MB/1GB Flash Drive > > so launch qemu with that: > -usbdevice host:1307:0163 > > and then in the VM, if it fails, you get those errors in dmesg, and the > device doesn't show up in `lsusb`. if it passes, `lsusb` reports it > fine. >