[Bug 178256] New: The whole screen flickers periodically

[Jakub Schmidtke]

http://bugs.kde.org/show_bug.cgi?id=178256

           Summary: The whole screen flickers periodically
           Product: kde
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: sjakub at gmail.com


Version:            (using Devel)
Compiler:          gcc 4.3.2 
OS:                Linux
Installed from:    Compiled sources

In KDE 4.2 beta1 and 2 I experience periodic screen flickering.
I haven't used 4.1 line, but it was not happening in 3.5.10 for sure.
I have found this bug: https://bugs.kde.org/show_bug.cgi?id=170920,
but I guess it is OpenSuse-related. I am using Arch64, and KDE packages with
practically no patches. Also, I don't have 'Detecting RANDR' service in the
list of services. I have 'KDED-module for screen-management' but it's in the
window of 'on demand' services and I can't disable it. I tried killing kded4
and/or krunner, but it doesn't help.
The flickering happens irregularly, sometimes 5 seconds atern previous one,
sometimes it takes minutes. When it happens the whole screen blinks - it looks
similar to changing resolution or refresh rate, but it's way shorter.
It doesn't happen every time I start KDE, and restarting KDE sometimes helps.
I have x86_64 arch,  gcc 4.3.2, nvidia drivers 177.82, kernel 2.6.27.x
(different versions, it doesn't change anything), xorg-server 1.5.3.
Also, I'm not the only one experiencing that
(http://bbs.archlinux.org/viewtopic.php?pid=464744#p464744). And it might be
nvidia-related :/
Oh, and this is a laptop with GeForce Go 7700 card, DVI, DSUB and TV-out
outputs.
The flickering happens on built-in screen, I haven't tested in on external
display.


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