Duplicate Keystrokes - Again, Again!

[Duncan Cragg]

>
> Sorry, I haven't got a clue how to help you.  I spent hours 
> investigating the duplicate keystrokes problem many months ago.  I 
> described some of what I learned in the following email:
>
> http://www.cygwin.com/ml/cygwin-xfree/2002-02/msg00195.html


Yup: as my original email indicated with the Google link, I have read 
the history!!

>
>
> All I could see is that for certain instances of Windows keypress 
> messages we were generating two keystrokes in the X Client with the 
> focus.  I followed this as low as I could with gdb and it was always a 
> single keystroke as far as I could see, but it magically turned into 
> two keystrokes at some level beyond where I could look.  I speculated 
> that perhaps this was something in the MI layer trying to do an 
> "autorepeat" for us, which we don't want it to do.  It could be the 
> delay between the down message and the up message that is causing 
> this.  But, like I said, I looked through almost all of the code and 
> nowhere could I find a part that looped and created extra keypresses 
> in the X Client.
>

In support of your conclusion, I tried a simple 'xset r off'.  This 
fixes the problem for me (or, at least, makes it so much reduced that I 
haven't seen it yet), and, of course, I still get key repeats off Windows.

Thanks for replying; I still find it hard to believe that this is such a 
rare problem that it is given low priority. Must be one of my '.*' files 
that's making it worse!

Cheers


Duncan Cragg


>
>> Since there's been no response to this, I thought I'd add a little 
>> more detail in the hope of
>> triggerring a reaction!!!
>> See after this copy-paste of my original email:
>>
>>> Hello - I've just arrived at this list, so hope I don't break 
>>> protocol in any way!!
>>>
>>> I have a problem which can be summarised as 'it's the same as the 
>>> following past postings':
>>>
>>> http://www.google.com/search?hl=en&lr=&ie=UTF-8&q=+site:www.cygwin.com+xfree86+duplicate+keystrokes
>>>
>>> The discussions there mentioned the infrequency of the problem of 
>>> duplicate keystrokes for the respondents - a couple of times a day.
>>>
>>> I, however, am getting this problem all the time: as in, every five 
>>> commands or so, or every five edit keystrokes....!!!!
>>>
>>> Am I alone?
>>>
>>> Am I doing something odd?
>>>
>>> This happens on both my work and home installations (work is 1G, 
>>> home is 500M laptop; home has VNC running which I can see would make 
>>> this worse, but work is not overloaded). Both installations are 
>>> out-of-the-box, running twm. I can supply more details (.Xmodmap, 
>>> .twmrc, .Xdefaults, etc.) if someone thinks it's relevant.
>>>
>>> Any help appreciated!
>>>
>>>
>>> Duncan Cragg
>>>
>> So my work machine is NT and this problem only manifests when doing 
>> an ssh to one of my home machines and running up an editor.  It's bad 
>> enough that it's intolerable for editing - repeated keystrokes 
>> occurring every 10 or so.
>>
>> At home it's much worse - this machine is running Windows 2000. Like 
>> I said, it's a 500Mhz and running VNC - but I've tried turning off 
>> some of the VNC checkboxes, without any improvement. VNC is only 
>> using a tiny bit of CPUanyway. I can't see a 'disable VNC' checkbox 
>> or option anywhere to completely switch it off though.  I get 
>> repeated chars even on a bash prompt on the local machine - and it's 
>> about every five or so keystrokes, biased towards carriage returns 
>> and big events like shifting down half a page. It occurs equally on 
>> ssh's to other machines on local xterms as to xterms launched from 
>> those machines.
>>
>> The thing these setups have in common is the .xinitrc, .twmrc, 
>> .Xdefaults and .Xmodmap files.  Can anyone suggest one of these to 
>> start adjusting? I can supply relevant sections - if anyone has a 
>> clue what's relevant!!
>>
>> Thanks in advance for any help with this one!!
>>
>> OK - I'll look at building from source and fiddling with code, if 
>> that'll prove I'm serious!! I'm going to have to get Exceed (shput!) 
>> if I can't resolve this...  If no-one responds to this email, I'll 
>> keep the list informed of how I'm getting on.  It'll be a riveting 
>> saga, I'm sure...   =0) Oh - if we can fix that problem where 
>> alt-Tabbing into or out of Xfree splatters tabs over the in-focus 
>> window, it'll be a bonus. This has been suggested as related in the 
>> above threads...
>>
>>
>> Duncan Cragg
>>
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