External screen flickering
by Luca Cavanna
Hello,
I have an ASUS K53SV laptop with NVidia Optimus: integrated Intel graphic
card + NVidia GT540M. I upgraded to Fedora 17 and I have a weird problem
with some external screens, not all of them.
I tried installing Bumblebee and bbswitch to get rid of the discrete card
and eventually turn it off when I don't need it. I then noticed there are
different kinds of flickering, depending on:
- Power cable connected, discrete card ON => shaking a lot
- Power cable connected, discrete card OFF => shaking a lot
- Power cable disconnected, discrete card ON => shaking
- Power cable disconnected, discrete card OFF => shaking a little
Well, this seems the most common behaviour, even though it can change in a
random way. For example sometimes it flickers a lot with power cable
disconnected, and if I connect it it flickers less. That's weird.
I tried different screens and the behaviour still seems pretty random. With
some screens I have similar problems, with some it works fine. I tried
changing the VGA cable too, but the problem is still the same.
Even more weird, I just found out that while I have the power cable
connected, the worst situation, the screen stops flickering if I run a
command like grep -ir something *, that would make me think that when the
cpu is busy, working pretty hard, the problem disappears. As soon as the
process has done, the screen starts shaking again. Please, don't think I'm
crazy :) I made several tests! I did some tests regarding grounding as
well, for example plugging the monitor to an ungrounded socket etc. but
nothign changes.
Do you have any suggestion how to fix this issue?
I already published this question to ask.fedoraproject.org but I didn't get
any reply.
11 years, 1 month
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Samsung Series 9 Support
by Sean McNamara
I am sick of Windows, and in the market for a new laptop. I am either
getting a macbook =( or another well performing laptop with good
resolution. I do a lot of computing and programming, so power and
performance are key. Samsung Series 9 is looking like a possible choice,
but I have a very important question: Does Fedora support Samsung's
gestures, primarily the 3 finger swipe to switch between applications? The
3 finger swipe is a big deal for me when switching between an IDE, the
internet, and whatever else is up. I appreciate any help!
--
Regards,
Sean
11 years, 2 months
- 1
- 0
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