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Ubuntu Help Discussion and help about Ubuntu, Kubuntu, Xubuntu, and all the Ubuntu family

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Old 07-16-2007   #1 (permalink)
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Screen Keeps Blinking!

Hey All,

I am having an issue with my monitor blinking. I've reinstalled the graphics drivers and that didn't solve it. It is blinking fairly often. Thanks for any help you can provide.



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Old 07-16-2007   #2 (permalink)
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Can you describe the problem better?

Do you mean it's blinking on and off, or is it just flickering?

When you say it's doing this fairly often, do you mean it stops at times?
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Old 07-16-2007   #3 (permalink)
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Screen Flickering

I would say it's flickering, not turning on and off. It actually stops sometimes (right now it's not doing it at all). At it's worse it happens about every 2-3 minutes, sometimes it's once every half an hour. I have a Dell Inspiron 9400, with a NVIDIA 7400 GS (I believe) graphics card. Thanks all

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Old 07-16-2007   #4 (permalink)
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If you have an LCD monitor, you shouldn't be seeing any flickering.

If you have a CRT, then you might just need to set the vertical refresh rate a bit higher. Check your manual for proper horiz and vert refresh rates and then edit your /etc/X11/xorg.conf file accordingly.

Note that you have to be root to edit that file.
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Old 07-17-2007   #5 (permalink)
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Notebook

It's the monitor on the notebook itself....shouldn't be anything about refresh rates...I'm dual booting and it doesn't happen in XP at all
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Old 07-17-2007   #6 (permalink)
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Quote:
Originally Posted by jmadero
It's the monitor on the notebook itself....shouldn't be anything about refresh rates
check your NoteBook's Manual. Refresh rates must be specified some where. you have set correct supported Refresh Rates in xorg.conf file.
did you install nVidia driver?
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Old 07-17-2007   #7 (permalink)
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Installed NVIDIA driver

I did install the NVidia driver immediately after installing Ubuntu (that went without a hitch), and until recently (the past couple days) there had been no blinking (have been running Ubuntu for close to a month). Thanks
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Old 07-17-2007   #8 (permalink)
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did you upgrade Kernel recently? How many options ( kernel versions ) GRUB Menu displays at startup?
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Old 07-18-2007   #9 (permalink)
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Two Options

There are two Kernal options on startup I believe, plus two backup ones and XP.
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Old 07-19-2007   #10 (permalink)
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post the contents of /boot/grub/menu.lst file
Code:
less /boot/grub/menu.lst
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