[Bug 1180777] Re: Windows 7 VM freeze on Ubuntu 12.04 KVM

[f3a97]

Hi Serge,

I performed the experiment you suggested:

1) Connected with RDP client
2) Worked until it hanged
3) Successfully connected to the VM via virt-manager (RDP client still
freezed)
4) Verified that Windows is still connected to the network
5) Successfully pinged my host IP from within the VM (ping 192.168.122.1)


So it doesn't seem to be a network disconnect issue.


Can you think of anything else?


Thanks!


On 27 June 2013 16:12, Serge Hallyn <1180777 at bugs.launchpad.net> wrote:

> Hi,
>
> (You probably knkow this, but to explain my request, the RDP connection
> goes over the VM's virtual network card to talk directly to the VM.
> Provided you have only a single VM running, 'gvncviewer localhost:0' (or
> the equivalent with ssh port forwarding if you can't run X on the host)
> talks to the kvm process.)
>
> Could you please start the VM, run RDP until it hangs, then connect with
> vnc and use the windows network admin commands to see what windows
> thinks is going on?  I.e. does it think it is still connected to a
> network?  If not, can you simply reconnect, or do you have to restart
> the driver, or do you have to restart the VM altogether?
>
> I'm pretty sure htis is a bug in the qemu nic emulation, but am not sure
> where to begin diagnosing.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1180777
>
> Title:
>   Windows 7 VM freeze on Ubuntu 12.04 KVM
>
> Status in “qemu-kvm” package in Ubuntu:
>   Confirmed
>
> Bug description:
>   Hi,
>
>   I recently started using KVM over VirtualBox for my Office needs. I
>   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
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1180777/+subscriptions
>

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Title:
  Windows 7 VM freeze on Ubuntu 12.04 KVM

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