Missing mouse clicks running windows XP

Missing mouse clicks running windows XP

[Andrew Walrond]

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.

Andrew Walrond

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Re: Missing mouse clicks running windows XP

[Avi Kivity]

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?

Are you running as root or as a regular user?

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

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

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

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

Anything in dmesg?

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error compiling committee.c: too many arguments to function


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Re: Missing mouse clicks running windows XP

[Andrew Walrond]

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

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Re: Missing mouse clicks running windows XP

[Avi Kivity]

Andrew Walrond wrote:
>   
>> 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.
>   

Okay, this is 2.4 in the FAQ:

2.4. I get "rtc interrupts lost" messages, and the guest is very slow?
Try setting CONFIG_HPET_EMULATE_RTC=y in your host .config.

Perhaps your config is in /boot (as Fedora does).  If not perhaps some 
Ubuntu maintainer can comment?

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Re: Missing mouse clicks running windows XP

[Jon]

On Sun, Apr 22, 2007 at 12:21:40PM +0100, Andrew Walrond wrote:

> 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?

grep CONFIG_HZ /boot/config-`uname -r`

> [ 3949.793179] rtc: lost some interrupts at 1024Hz.

I get these when rtc is compiled as a module. Compiling it 'into' the 
kernel gets rid of the messages.

For what it's worth, I also get the occasional missed mouse click, but 
only very rarely with kvm. The situation is far worse with qemu where 
the GUI redrawing/painting is much slower in my experience.

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Re: Missing mouse clicks running windows XP

[Andrew Walrond]

Interestingly, I still get the lost interrupts messages if I leave the 
max-user-freq at the bootup default of 64. Running XP under kvm fresh after a 
reboot:

$ cat /proc/sys/dev/rtc/max-user-freq
64
$ dmesg | tail -n 3
[  362.567318] rtc: lost some interrupts at 1024Hz.
[  362.569987] rtc: lost some interrupts at 1024Hz.
[  362.574685] rtc: lost some interrupts at 1024Hz.
$ 

The messages are definitely down to the kvm session; they don't appear until I 
start the XP vm.

Andrew Walrond

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Re: Missing mouse clicks running windows XP

[Andrew Walrond]

On Sunday 22 April 2007 11:25:21 Avi Kivity wrote:
>
> Anything in dmesg?

Ok, so running as root allows qemu to ignore /proc/sys/dev/rtc/max-user-freq 
and increase the frequency to 1024Hz anyway.

Running as a user means I get this message from qemu again:

Could not configure '/dev/rtc' to have a 1024 Hz timer. This is not a fatal
error, but for better emulation accuracy either use a 2.6 host Linux kernel or
type 'echo 1024 > /proc/sys/dev/rtc/max-user-freq' as root.

which is itself a bit confusing, since its says _either_ run a 2.6 kernel 
(which I obviously am) _or_ increase the max user frequency.

But anyway, even running as a user at 64Hz the mouse click problem remains.

Andrew Walrond

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Re: Missing mouse clicks running windows XP

[Carsten Emde]

Andrew,
> 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 had the same problem, it went away immediately after I changed the 
setting of the Windows XP "hardware" explicitly to "Standard PC" as 
explained here
http://sourceforge.net/mailarchive/forum.php?thread_name=87veg1ybb0.fsf%40grogan.peloton&forum_name=kvm-devel 

Essentially you have to follow:
My Computer -> Properties -> Hardware -> Device Manager -> [Whatever's
under
Computer, unless it's "Standard PC"] -> Properties -> Update Driver ->
Not at this time -> Next -> Install
from a list -> Next -> Don't search -> Next -> Standard PC -> Next

	--cbe

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Re: Missing mouse clicks running windows XP

[Avi Kivity]

Carsten Emde wrote:
> Andrew,
>   
>> 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 had the same problem, it went away immediately after I changed the 
> setting of the Windows XP "hardware" explicitly to "Standard PC" as 
> explained here
> http://sourceforge.net/mailarchive/forum.php?thread_name=87veg1ybb0.fsf%40grogan.peloton&forum_name=kvm-devel 
>
> Essentially you have to follow:
> My Computer -> Properties -> Hardware -> Device Manager -> [Whatever's
> under
> Computer, unless it's "Standard PC"] -> Properties -> Update Driver ->
> Not at this time -> Next -> Install
> from a list -> Next -> Don't search -> Next -> Standard PC -> Next
>
>   

This means our apic implementation is broken.


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Re: Missing mouse clicks running windows XP

[Andrew Walrond]

On Sunday 22 April 2007 11:40:32 Avi Kivity wrote:
> Carsten Emde wrote:
> > Andrew,
> >
> >> 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 had the same problem, it went away immediately after I changed the
> > setting of the Windows XP "hardware" explicitly to "Standard PC" as
> > explained here
> > http://sourceforge.net/mailarchive/forum.php?thread_name=87veg1ybb0.fsf%4
> >0grogan.peloton&forum_name=kvm-devel
> >

Thanks Carsten, but I have already set the computer to "Standard PC", so this 
does not resolve the mouse problem for me.

>
> This means our apic implementation is broken.


Andrew Walrond

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Re: Missing mouse clicks running windows XP

[Carsten Emde]

Andrew Walrond wrote:
> On Sunday 22 April 2007 11:40:32 Avi Kivity wrote:
>> Carsten Emde wrote:
>>> Andrew,
>>>> 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 had the same problem, it went away immediately after I changed the
>>> setting of the Windows XP "hardware" explicitly to "Standard PC" as
>>> explained here
>>> http://sourceforge.net/mailarchive/forum.php?thread_name=87veg1ybb0.fsf%4
>>> 0grogan.peloton&forum_name=kvm-devel
> Thanks Carsten, but I have already set the computer to "Standard PC", so this 
> does not resolve the mouse problem for me.
Hmm, the way you describe the problem sounds absolutely identical to the 
problem I had here, and setting the computer to "Standard PC" solved it 
like magic. Sorry for the false hope... You probably need to go back to 
Avi's "questionnaire" - I will then compare your settings with the 
settings of the system that runs okay here.

	--cbe

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