From: Peter Lieven <pl@dlh.net>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] usb-hid: activate usb tablet / mouse after migration.
Date: Mon, 20 Feb 2012 11:42:00 +0100 [thread overview]
Message-ID: <4F422378.2040001@dlh.net> (raw)
In-Reply-To: <4EA139B9.9040408@redhat.com>
On 21.10.2011 11:22, Gerd Hoffmann wrote:
> Hi,
>
>> Original:
>> * Mouse #1: QEMU HID Tablet (absolute)
>> Mouse #0: QEMU PS/2 Mouse
>>
>> Start from the snapshot:
>> * Mouse #0: QEMU PS/2 Mouse
>> Mouse #1: QEMU HID Tablet (absolute)
>>
>> The active mouse device is not be saved into the snapshot.
> That shouldn't hurt though. When the guest polls the tablet the first
> time after starting from snapshot should activate it. In case it the
> guest doesn't pull because the guest activated remote wakeup and
> suspended the device we now (with the patch) activate it too.
>
> It also doesn't reproduce here. /me wonders what is going on ...
>
> What does 'info usb' print before and after snapshotting?
> Can you also post the full qemu command line?
I see the same issue here, but not in my case it happens when migrating
a VM.
Before migration:
(qemu) info usb
info usb
Device 0.1, Port 1, Speed 12 Mb/s, Product QEMU USB Tablet
(qemu) info mice
info mice
Mouse #0: QEMU PS/2 Mouse
* Mouse #1: QEMU HID Tablet (absolute)
After migration:
(qemu) info usb
info usb
Device 0.1, Port 1, Speed 12 Mb/s, Product QEMU USB Tablet
(qemu) info mice
info mice
Mouse #1: QEMU HID Tablet (absolute)
* Mouse #0: QEMU PS/2 Mouse
It seems the USB Tablet is not activated again. I can get it working by
manually aktivating and deactivating the USB Hub in Windows Device Manager.
The guest is Windows7 32-bit.
cmdline:
/usr/bin/qemu-kvm-1.0 -net
tap,vlan=141,script=no,downscript=no,ifname=tap0 -net
nic,vlan=141,model=e1000,macaddr=52:54:00:ff:00:d3 -drive
format=host_device,file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-eeef4e007-a8a9f3818674f2fc-lieven-windows7-r80788,if=virtio,cache=writethrough,aio=native
-m 2048 -monitor tcp:0:4001,server,nowait -vnc :1 -name lieven-win7
-boot order=dc,menu=off -k de -pidfile /var/run/qemu/vm-187.pid -rtc
base=localtime -vga std -usb -usbdevice tablet -cpu host
Thanks,
Peter
> thanks,
> Gerd
>
>
next prev parent reply other threads:[~2012-02-20 10:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-12 11:30 [Qemu-devel] [PATCH] usb-hid: activate usb tablet / mouse after migration Gerd Hoffmann
2011-10-13 2:09 ` TeLeMan
2011-10-13 10:48 ` Gerd Hoffmann
2011-10-16 8:54 ` TeLeMan
2011-10-21 9:22 ` Gerd Hoffmann
2012-02-20 10:42 ` Peter Lieven [this message]
2012-02-21 16:25 ` Peter Lieven
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