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[Qemu-devel] [Bug 1377095] [NEW] KVM guest VM does not reattach a throug
From: |
123p |
Subject: |
[Qemu-devel] [Bug 1377095] [NEW] KVM guest VM does not reattach a throughpassed USB printer from Host after switching printer off and on |
Date: |
Fri, 03 Oct 2014 10:50:35 -0000 |
Public bug reported:
Host OS: Gentoo, all packages built 2014-10-01
qemu version 2.1.0-r1
Linux kernel 3.14.14 x86_64 Intel(R) Core(TM) i3-3220T CPU @ 2.80GHz
GenuineIntel GNU/Linux
Guest VM: Debian 7 (Wheezy) Linux 3.2.0 686
Start command:
/usr/bin/qemu-system-i386 -enable-kvm -name wheezy -k de -serial null -parallel
null -hda /var/kvm/wheezy.kvm-img -daemonize -net nic,macaddr=02:00:00:00:01:31
-net tap,ifname=tap3,script=no,downscript=no -m 512 -pidfile
/var/run/kvm/wheezy.pid -usb -usbdevice tablet -runas myuser -vnc 127.0.0.1:3
-usbdevice host:04e8:3242
Problem:
USB printer pass-through from KVM host to guest vm only works if I start the
qemu kvm when the USB printer (vendor/product ID 04e8:3242) is switched on and
therefore shown in lsusb on the host. Then it is available in the started VM.
But when I switch the usb printer attached to the host off, it
disappears in lsusb both on the host and the VM (as expected) but when I
switch the USB printer on again, it is shown on the host and also on the
QEMU Monitor (Crtl Alt Shift 2 -> info usbhost), but in the VM lsusb
does not show it again- so USB pass-through / hot plugging does not
work. It worked with a previous Version of qemu (1.0 or something).
That is very annoying, because every time I want to print something, I need to
shutdown the VM, start the printer, and then start the VM (which runs cups as
printer server).
But after printing, I do not want the printer to keep running, so I switch it
off.
** Affects: qemu
Importance: Undecided
Status: New
** Tags: hotplug pass-through printer usb
--
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https://bugs.launchpad.net/bugs/1377095
Title:
KVM guest VM does not reattach a throughpassed USB printer from Host
after switching printer off and on
Status in QEMU:
New
Bug description:
Host OS: Gentoo, all packages built 2014-10-01
qemu version 2.1.0-r1
Linux kernel 3.14.14 x86_64 Intel(R) Core(TM) i3-3220T CPU @ 2.80GHz
GenuineIntel GNU/Linux
Guest VM: Debian 7 (Wheezy) Linux 3.2.0 686
Start command:
/usr/bin/qemu-system-i386 -enable-kvm -name wheezy -k de -serial null
-parallel null -hda /var/kvm/wheezy.kvm-img -daemonize -net
nic,macaddr=02:00:00:00:01:31 -net tap,ifname=tap3,script=no,downscript=no -m
512 -pidfile /var/run/kvm/wheezy.pid -usb -usbdevice tablet -runas myuser -vnc
127.0.0.1:3 -usbdevice host:04e8:3242
Problem:
USB printer pass-through from KVM host to guest vm only works if I start the
qemu kvm when the USB printer (vendor/product ID 04e8:3242) is switched on and
therefore shown in lsusb on the host. Then it is available in the started VM.
But when I switch the usb printer attached to the host off, it
disappears in lsusb both on the host and the VM (as expected) but when
I switch the USB printer on again, it is shown on the host and also on
the QEMU Monitor (Crtl Alt Shift 2 -> info usbhost), but in the VM
lsusb does not show it again- so USB pass-through / hot plugging does
not work. It worked with a previous Version of qemu (1.0 or
something).
That is very annoying, because every time I want to print something, I need
to shutdown the VM, start the printer, and then start the VM (which runs cups
as printer server).
But after printing, I do not want the printer to keep running, so I switch it
off.
To manage notifications about this bug go to:
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