Hi,

I've double checked my conf, I can confirm I'm not using virtio but
standard Win 7 drivers. (please see my VM conf that I posted some time ago).

So it's not definitely a virtio-specific issue.


On 3 October 2013 16:31, Serge Hallyn <email address hidden> wrote:

> Quoting Vasile Dumitrescu (<email address hidden>):
> > I added a rtl8139c netcard to the VM and connected through it by RDP -
> > no more freezes.
> >
> > It looks like kvm does not play well with virtio network cards and RDP.
> >
> > Red Hat virtio net windows driver version: 62.65.104.6500, 6/19/2013
>
> This makes me wonder if the bug may not actually be in the virtio net
> driver.
> The source for that is at
> https://github.com/YanVugenfirer/kvm-guest-drivers-windows .
> Something like commit 9b1b81a731f722efa8df24429649b527a17bf433 might
> be relevant (assuming the git HEAD has this fixed, which I've not
> tested).
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1180777
>
> Title:
>   RDP traffic freeze on quiet network
>
> Status in QEMU:
>   New
> Status in “qemu-kvm” package in Ubuntu:
>   Confirmed
> Status in Debian GNU/Linux:
>   New
>
> Bug description:
>   To summarize what I think has been found so far,
>
>     1. The main symptom is that RDP connections hang after some time
>     2. This bug affects qemu 1.0 .. 1.6.5
>     3. This bug affects at least windows xp and windows 7 guests
>     4. Keeping another network connection open, such as vnc, prevents the
> RDP connection from hanging.
>
>   ========================================
>   Hi,
>
>   I have recently setup a Windows 7 VM on KVM and started using it
>   through remote desktop.
>
>   What happens is that, after some hours of usage, the remote desktop
>   connection freezes. I thought it was a remmina bug, as the it was
>   enough to kill and restart it to successfully connect again to the VM.
>
>   However, today I've switched to a different RDP client (2X Client
>   chromium app) and the freeze just happened again!
>
>   Some information:
>   - the host and the VM are completely idle when the freeze occurs
>   - I've tried sniffing the network packets toward the RDP port during the
> freeze and found that the client is sending packets but no packet is sent
> back
>
>   Could this be a KVM issue? How can I further debug this one (I expect
>   the freeze to happen again...)?
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 12.04
>   Package: kvm 1:84+dfsg-0ubuntu16+1.0+noroms+0ubuntu14.8
>   ProcVersionSignature: Ubuntu 3.2.0-41.66-generic 3.2.42
>   Uname: Linux 3.2.0-41-generic x86_64
>   ApportVersion: 2.0.1-0ubuntu17.2
>   Architecture: amd64
>   Date: Thu May 16 14:12:40 2013
>   MachineType: Hewlett-Packard HP ProBook 4520s
>   MarkForUpload: True
>   ProcEnviron:
>    TERM=xterm
>    PATH=(custom, no user)
>    LANG=en_US.UTF-8
>    SHELL=/bin/bash
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-41-generic
> root=UUID=D2E20BC3E20BAAB5 loop=/hostname/disks/root.disk ro quiet splash
> vt.handoff=7
>   SourcePackage: qemu-kvm
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 08/26/2010
>   dmi.bios.vendor: Hewlett-Packard
>   dmi.bios.version: 68AZZ Ver. F.0A
>   dmi.board.name: 1411
>   dmi.board.vendor: Hewlett-Packard
>   dmi.board.version: KBC Version 57.30
>   dmi.chassis.type: 10
>   dmi.chassis.vendor: Hewlett-Packard
>   dmi.modalias:
> dmi:bvnHewlett-Packard:bvr68AZZVer.F.0A:bd08/26/2010:svnHewlett-Packard:pnHPProBook4520s:pvr:rvnHewlett-Packard:rn1411:rvrKBCVersion57.30:cvnHewlett-Packard:ct10:cvr:
>   dmi.product.name: HP ProBook 4520s
>   dmi.sys.vendor: Hewlett-Packard
>
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>