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List:       kde-bugs-dist
Subject:    [Bug 51620] New: print screen can't handle large amount of data
From:       Jens Dagerbo <jens.dagerbo () swipnet ! se>
Date:       2002-12-07 20:16:05
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http://bugs.kde.org/show_bug.cgi?id=51620     
           Summary: print screen can't handle large amount of data
           Product: kwin
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kwin@kde.org
        ReportedBy: jens.dagerbo@swipnet.se


Version:           unknown (using KDE 3.1.0 (RC5))
Installed from:    compiled sources
Compiler:          gcc version 3.2
OS:          Linux (i686) release 2.4.19-gentoo-r10

I really like the alt/ctrl + printscr feature, it's a really quick way of getting a \
snapshot without going through ksnapshot. However, it was working very unreliably for \
me and, after some testing, here is what I found:

There seems to be an upper limit for how much data that reliably can be pasted \
through the clipboard. I run my monitor at 1600x1200 and ctrl+printscr seemed less \
reliable than alt+printscr, but after some testing (and asking in #kde-devel) I \
realized that it all depends on what the screen looks like at the time of the \
snapshot. With all windows minimized and a simple desktop background, I can't get \
ctrl+printscr to misbehave. With a large jpeg showing in a window, alt+printscr fails \
most of the time.

"most of the time"? Yes! The (from my horizon) really weird thing about this is that \
the success of the pasting of large amounts of data seems somewhat random. I can do \
one "copy" and then attempt "paste" several times, and on the fourth attempt it might \
suddenly decide to work.

To reproduce:
1. High resolution, busy screen (not easily compressed as a picture) + use \
ctrl/alt+printscr.  2. Attempt "paste" (to the desktop, see #47418)
--> (most of the time) this fails with a "the clipboard is empty" message. 

(Keep trying, it might finally work.. ;) )


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