[AG-TECH] Rat MBUS funny

Andrew Sharpe andrew.sharpe1 at jcu.edu.au
Tue Jun 20 05:12:38 CDT 2006

Hash: SHA1

Precisely the idea.  If the window manager is trying to show the window
contents while dragging, then the window is being send many redraw
commands - I imagine Mbus can't keep up.  Not using opaque windows when
dragging should eliminate this.

I can't comment on whether this would effect the vic or not - and I'm
definitely not the definitive source for information on how the rat
operates - this was just an idea for the problem you were reporting.


Bonnett, PG (Paul) wrote:
> Nice idea. Do you mean untick the "show contents while dragging" in
> display properties, or am I missing another setting?
> Why should this kill RAT?
> Surely this would affect the VIC windows far more?
> Thanks,
> PB
> -----Original Message-----
> From: owner-ag-tech at mcs.anl.gov [mailto:owner-ag-tech at mcs.anl.gov] On
> Behalf Of Andrew Sharpe
> Sent: 20 June 2006 03:26
> To: ag-tech at mcs.anl.gov
> Subject: Re: [AG-TECH] Rat MBUS funny
> Have you tried setting your window manager to not use opaque windows
> when moving?
> Andrew
> Bonnett, PG (Paul) wrote:
>> Stephen,
>> We see this failure regularly as we have an over enthusiastic operator
>> who drags the RAT across the screen too quickly and can easily create 
>> this error.
>> I'm glad someone else sees this - I sometimes feel we are the only 
>> site with problems!
>> Paul
>> Rutherford Appleton Laboratories
>> Oxon, UK
>> -----Original Message-----
>> From: owner-ag-tech at mcs.anl.gov [mailto:owner-ag-tech at mcs.anl.gov] On 
>> Behalf Of S.Booth
>> Sent: 09 June 2006 13:57
>> To: ag-tech at mcs.anl.gov
>> Subject: [AG-TECH] Rat MBUS funny
>> I spotted a funny behaviour with RAT on windows yesterday.
>> If you pick up the RAT window with the mouse and waggle it back and 
>> forth for 30 seconds or so you sometimes get a the ratmedia program 
>> falling over with a "MBUS error" pop-up window.
>> I managed to reproduce this with both AG3.0.1 on XP and AG2.4 on 
>> Win-2000 in both cases I was in a venue with background music playing 
>> so there was a lot of mbus traffic to update the level meters and both
>> systems were dual CPU.
>> These are a fairly contrived set of circumstances and  Ive never seen 
>> this in a real meeting but it looks to me that the mbus code needs 
>> tweaking a bit.
>>  			Stephen
>> ======================================================================
>> |epcc| Dr Stephen P Booth             Principal Architect       |epcc|
>> |epcc| s.booth at epcc.ed.ac.uk          Phone 0131 650 5746       |epcc|
>> ======================================================================
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