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List:       lyx-devel
Subject:    Re: Fwd: [Bug 353449] Re: lyx 1.6.x impossibly slow
From:       Pavel Sanda <sanda () lyx ! org>
Date:       2010-12-19 22:32:49
Message-ID: 20101219223249.GH28968 () atrey ! karlin ! mff ! cuni ! cz
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Jean-Marc Lasgouttes wrote:
> Running on a machine with Ubuntu 10.10 64bit and Lyx 1.6.7 as well as 
> 1.6.8.
> Not sure if it's the same bug, but in my case, I isolated the problem to a 
> simple procedure:
> Close everything (best to reboot) and start up only your LyX file. 
> Scrolling and writing should be fast even with big documents.
> Hit the "View PDF" toolbar button to compile it. For me it opens up in 
> Evince.
> Now go back to LyX (alt+tab or click the window list), scrolling and 
> writing suddenly becomes very slow.
> Minimise the Evince window, then minimise and unminimise the the LyX window 
> - everything is fast and smooth again.
> It stays fast as long as the Evince window is minimised so far, will have 
> to investigate further.
>
> Very strange behaviour... this workaround behaviour works for me but I
> can't explain it. Hope it helps someone else...

evince is not qt based, so i cant imagine what can cause such interference.
do yo se some clipboard manager btw?

pavel
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