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I have been using Xubuntu 14.04 alongside Windows XP. Today all of a sudden while surfing the Internet the screen started flickering. I restarted the computer, it ran successfully but the same issue came up. This time there where continuous beep sounds from the CPU. Please help.

Specs:

Intel Pentium D 3.00GHz 2GB RAM Gigabyte G41-M Combo Xubuntu 14.04 LTS & Windows XP

Screenshot - https://i.stack.imgur.com/QCUvU.jpg

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  • Does it flicker in windows too or just Xubuntu
    – Mark Kirby
    Aug 25, 2014 at 12:06
  • No XP is working well.
    – Herin
    Aug 25, 2014 at 12:07
  • Please go to your display setting and make sure you have the correct refresh rate set (normaly 60hz or more). The most common cause of screen flicker is low refresh rate. Also do you have GPU drivers installed
    – Mark Kirby
    Aug 25, 2014 at 12:11
  • If you use intigrated gpu (eg intel), go to Settings->Window manager tweaks and turn off compositing and tell me if this fixes it
    – Mark Kirby
    Aug 25, 2014 at 12:16
  • Changed the refresh rate from 60 to 75hz. Working well for a while. Thank you Mark for your help & guidance
    – Herin
    Aug 25, 2014 at 12:30

1 Answer 1

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Please go to your display setting and make sure you have the correct refresh rate set (normaly 60hz or more). The most common cause of screen flicker is low refresh rate

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