Re: Missing mouse clicks running windows XP

[Andrew Walrond <andrew-2/QedQ4M3FBAfugRpC6u6w@public.gmane.org>]

On Sunday 22 April 2007 11:25:21 Avi Kivity wrote:
> Andrew Walrond wrote:
> > On all kvm versions I have tried (16 - 19) running windows XP, with the
> > XP window having captured the mouse, I have to make my mouse clicks slow
> > and deliberate else XP does notice them. It makes double clicks
> > especially hard.
> >
> > I am running Kubuntu Feisty 64bit on a core 2 duo dell laptop, and the
> > external kvm modules.
> >
> > Hope that's useful. Let me  know if I can provide further information.
>
> What's your host cpu type?

vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU         T7200  @ 2.00GHz
stepping        : 6

The cpu frequency control is set to Dynamic, and both cores seems to run at 
half speed (1GHz) most of the time, incase that makes a difference.

>
> Are you running as root or as a regular user?

As root. Here is the little script I use to start VMs:

	#!/bin/sh

	sudo modprobe kvm-intel
	sudo bash -c 'echo 1024 > /proc/sys/dev/rtc/max-user-freq'
	sudo qemu-system-x86_64 -m 512 -daemonize -hda $1

>
> Does time flow normally in the guest (watch the Windows clock)
>

After a couple of hours uptime, the kubuntu/XP clocks match exactly. (Well, 
exactly 1 hour out, but I guess thats because I'm on BST which is being 
propagated to the VM as the hardware clock time; A minor issue for another 
day)

> What's the kernel version?  What's CONFIG_HZ set to?

Latest Feisty kernel but using kvm-19 modules
No idea about CONFIG_HZ. The Kubuntu kernel doesn't seem to expose the .config 
in /proc. Any other way I can find out?

$ uname -a
Linux andrew-xps 2.6.20-15-generic #2 SMP Sun Apr 15 06:17:24 UTC 2007 x86_64 
GNU/Linux


>
> If you run the guest with 'taskset 1', does the problem go away? (e.g.
> taskset 1 qemu ...)
>

Modified my script above to do 

	sudo taskset 1 qemu-system-x86_64 -m 512 -daemonize -hda $1

but no improvement I'm afraid

> If you run with -no-kvm, does the problem go away?

No, still there.


> Anything in dmesg?

Ah... A load of these

[ 3949.793179] rtc: lost some interrupts at 1024Hz.
[ 3949.813162] rtc: lost some interrupts at 1024Hz.
[ 3949.833150] rtc: lost some interrupts at 1024Hz.
[ 3949.853139] rtc: lost some interrupts at 1024Hz.
[ 3949.873130] rtc: lost some interrupts at 1024Hz.
[ 3949.893117] rtc: lost some interrupts at 1024Hz.
[ 3949.913108] rtc: lost some interrupts at 1024Hz.


Which I guess might just be the problem?

I only added the
  sudo bash -c 'echo 1024 > /proc/sys/dev/rtc/max-user-freq'
line to my script because qemu-system-x86_64 told me to. Should I try removing 
it?


Andrew Walrond

-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/