Flickering/Flashing screen problem related to keyboard

Posted by LeandroCR on Ask Ubuntu See other posts from Ask Ubuntu or by LeandroCR
Published on 2013-09-14T03:19:50Z Indexed on 2014/08/21 4:32 UTC
Read the original article Hit count: 213

Filed under:

12.04

|

keyboard

|

dell

|

dell-vostro

|

flicker

This will seems quite bizarre but that's a huge problem for me, I'm facing it for a long time since Ubuntu 12.04.

My Ubuntu/Linux Mint/Debian (Unity/Gnome) always starts flickering after using the computer for a while, I always thought this had something to do with the video board.

I have an Vostro 3550 (Radeon 6xxx/Intel Onboard).

First I realized that when I was navigating trough an website, when i selected with the mouse a combo, the combo closed it self automatically then the screen starts flickering.

The i realized when i was trying to make the login in the terminal (crtl + alt + f1) a strange character appears, like: ^@ repeatedly.

When i keep CRTL pressed the system never flickers!

I have absolutely no problem using Windows.

What can i do? There is no such thing as Keyboard driver on Dell Support.

I would love to use Ubuntu only, but this is very annoying.

Problem happens on Ubuntu 12.04, .10 and 13.04 Linux Mint 15 (Cinnamon) Debian Live with Gnome

© Ask Ubuntu or respective owner

Related posts about 12.04

Wipe 12.04/Windows 7 dual boot setup and start fresh new 12.04

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have an Asus u56e laptop running dual boot setup, Windows 7 and 12.04. I had Windows 7 first. I was wondering what's the easiest way possible to erase/format my drive (500GB) so that it deletes Ubuntu and Windows 7 so I can reinstall 12.04 onto my whole drive? Does the Ubuntu Live CD help make this… >>> More
In 12.04: Failed to load session 'ubuntu' [closed]

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Possible Duplicate: There's an issue with an Alpha/Beta Release of Ubuntu, what should I do? I'm using 12.04 beta. Today I was prompted to install some updates, which I did, followed by a reboot. On reboot, X starts, but all I see is a single dialog window in the middle of the screen… >>> More
Will final version of 12.04 use the power management changes found in kernel 3.3

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have seen in some version of Ubuntu that instead of making a huge change to update to the latest kernel, they take some of the good stuff out of it, for the sake of stability and put it on a previous version. In this case, kernel 3.3 has seen some very good power management enhancements that are… >>> More
Wired PS/2 Keyboard and Mouse do not work in 12.04 Live CD or after fresh 12.04 install - Foxconn D270S Atom Motherboard

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
My Wired PS/2 keyboard and mouse do not work in 12.04, either in a fresh install or from the Live CD. A USB keyboard and mouse will work. The PS/2 keyboard and mouse will work using the same hardware and a fresh 10.04 Ubuntu install or a fresh Windows 7 install. The motherboard is a Foxconn D270S… >>> More
Difference between 12.04 and 12.04.1

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I recently did a fresh install of Ubuntu 12.04 two days ago. Or at least I thought it was 12.04, but actually 12.04.1. Now I'm having errors popping up from the grub loader. Error: no video mode activated which was apparently resolved in this bug# 699802. However these workarounds are for 11.xx… >>> More

Related posts about keyboard

HTG Reviews the CODE Keyboard: Old School Construction Meets Modern Amenities

as seen on How to geek - Search for 'How to geek'
There’s nothing quite as satisfying as the smooth and crisp action of a well built keyboard. If you’re tired of mushy keys and cheap feeling keyboards, a well-constructed mechanical keyboard is a welcome respite from the $10 keyboard that came with your computer. Read on as we put the… >>> More
how to set keyboard for phonetic Hindi typing oneiric for Wx keyboard on QWERTY keyboard

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I am trying to type documents in Hindi language. My OS: Ubuntu 11.10 Gnome environment (http://packages.ubuntu.com/search?keywords=gnome-session-fallback) I do not use unity interface.The method is shown here http://www.youtube.com/watch?v=LL7icGNhIfI I am able to type in Hindi in Libreoffice and… >>> More
Send regular keyboard samples OR keyboard state changes over network

as seen on Game Development - Search for 'Game Development'
Building a multi player asteroids game where ships compete with each other. Using UDP. Wanted to minimize traffic sent to server. Which would you do: Send periodic keyboard state samples every from client every to match server physics update rate e.g. 50 times per second. Highly resilient to packet… >>> More
Non Blocking Keyboard on WinCE accessing the virtual keyboard

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello Guys, I am desperately looking for a solution that enables me to read keyboard events in a non blocking way. These Keyboard events are generated by a VIRTUAL KEYBOARD that comes with the WinCE device. I have a console application running in C++, where the user is asked to navigate via 'ESC'… >>> More
Fix keyboard orientation in landscape iPad app (upside down keyboard)

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm converting a landscape (UIInterfaceOrientationLandscapeRight) iPhone app to be a universal app. So far I've got the orientation working properly: the iPad version will launch with the right splash graphic and start in the right orientation (LandscapeLeft or LandscapeRight) depending on how the… >>> More