#18 Compare plugin causes flashing screen in Windows 7 64-bit


When I compare two text files with Notepad++ 5.8.2 Compare Plugin on my Windows 7 64-bit system, the result is a repeated flashing screen.
The only way out is to force a system shutdown via Ctrl-Alt-Del. Even this is not easy, if you have any unsaved files.
It would seem that the fact my system is the 64-bit version of Windows 7 may be the significant circumstance here.
The symptom does not occur on the 32-bit version of Windows 7.

I have copied this from http://ehc.ac/p/notepad-plus/bugs/3002/ and put it here which seemed like a more official place for it..





    REDLINK GmbH - 2014-03-12

    I can confirm this. It happens rarely, but I experienced it a few times. Windows 7 64 Bit too, on a Thinkpad T530 with Intel HD graphics.

  • Martin Devillers

    I have the same problem using Notepad++ v.5.9.4 using Compare Plugin 1.5.6 on a Windows 7 64-bit machine with a Intel(R) HD Graphics 3000 chip (Dell Inspiron E6400 series). Usually compare works just fine, sometimes it flickers once and in rare cases it goes completely haywhire and I need to pull the battery from my laptop to recover.

  • Pedro Ivo Silva

    Pedro Ivo Silva - 2014-12-08

    I have exactly the same problem here using Compare plugin. But I can see the mouse pointer on the screen when it flashes (by less than 1sec) and I can close notepad++ program. The problem stops when I close notepad++.

    I tried to change monitor's refresh rate from 60hz to 40hz and tried to change resolution but nothing worked. Follow some informations.

    Npp version: 6.6.9
    Compare Plugin version: 1.5.6
    File1 Size: 290kb / 9829 lines
    File2 Size: 291kb / 9853 lines
    OS: Windows 7 Professional SP1 x64 (6.1.7601)
    Processor: Intel(R) Core(TM) i7-2630QM CPU@2.00GHz
    Graphic Card: Intel(R) HD Graphics 3000

  • macikacz

    macikacz - 2015-12-08

    It helps when you switch off 'Plugins->Compare->Navigation bar'.

  • Uhuru N'Uru

    Uhuru N'Uru - 2016-01-10

    I don't know whether the issue I had is this Flashing screens bug, I wouldn't have described it as flashing myself, though others might. The reason I put it here is I thought I had the latest version as I use the plugin manager to update my plugins. That was on 1.5.6 and the version fixed my issue. So by clearly describng my symptoms in detail, you can tell if the flashing is what I describe, even though I think it's not and as I had already written most of this, when I still thought I had latest release, thought I'd post it anyway.

    The issue I saw, appeared to me, a sign that the comparison continued with data outside the file content, he biggest clue to me was it magnified whatever was changed,first in the first line of the blank, this then spreads all over the right pane, but not as a cohesive whole, in isolated small areaes of varying size.
    It appears more like small independant windows (content only no actual Window). The content can appear be moving images, whether they are or just an illusion caused by rapid changes, can't be be made out as the sections are too small. What I can make out appear to be taken from the intended screen content, but it could be the corrupted results that are shown.

    This "disease"is then spread by the mouse over mechanic to the entire expanse of my three screen system.
    The key difference is the screen isn't frozen and I can shut down noptepad and "use" windows, even though I cant see how to do it, everything appears to work.

    Anyway, if I'm wrong and this is your "Flickering", v1.5.6.2 fixes the issue, I describe, but it's not been added to Plugin Manager yet.

    Managed to make two screenshots of my main screen showing the effect when spread by mouseover, may help you decide if this is the same bug.

    Last edit: Uhuru N'Uru 2016-01-10

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