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I installed Ubuntu 12.04 on my HP Pavilion G7 Laptop recently, and accidentally uninstalled the "ubuntu-desktop" package along with some things labelled like Xorg or something like that. I immediately ran "sudo apt-get install ubuntu-desktop", and it seems to have worked. However, even though I have the desktop back, something is going buggy in any window I open. In ANY window, when I press ANY key, the window blinks. In my chrome browser (which I am using right now), only the mouse blinks.

Could someone please tell me what I can do to solve this?

Update:

I have noticed some other weird things going on. When I press Ctrl-Alt-F1 to go to a fullscreen terminal, a bunch of "@"'s show up on the screen as if they were being typed one at a time. Now my cursor and programs are always blinking, whether I press a key or not. When I right click, the menu disappears after a second. When I select something on the web with my mouse and keypad, the selected area starts blinking. Also, when I press-hold a button, it doesn't repeat they key press. It's like a button is being typed repeatedly, BUT I'M NOT PRESSING ANYTHING!!! My keyboard is just fine! I still don't know why this is happening.

Update 2:

Now, my touchpad doesn't work! I have to use an external mouse now. :-(. PLEASE HELP!!! It's getting worse!

Update 3:

The problem just disappeared, but I'm afraid it will come back when I reboot, PLEASE HELP!

Update 4:

I found someone with the exact same problem: Flickering/Flashing screen problem related to keyboard

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Joshua Alvarez
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2 Answers2

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sudo apt-get autoclean
sudo apt-get clean
sudo apt-get auto-remove
sudo apt-get update && sudo apt-get upgrade

autoclean - removes partial packages

clean - removes cached packages

auto-remove - removes orphaned packages

update && upgrade - exactly that

Reply if this doesn't work for you.

cremefraiche
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  • No, that didn't work. My programs are still blinking. :-( – Joshua Alvarez Dec 11 '14 at 01:26
  • I just found someone else with the same problem with the same version of Ubuntu: http://askubuntu.com/questions/512767/after-re-opening-laptop-programs-blink-with-each-keystroke-ubuntu-12-04-dell

    His question as never answered though.

     – Joshua Alvarez Dec 11 '14 at 01:28
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Try following this answer instead:

Working! Just installing latest 3.15 kernel (I tried 3.15 RC8 and 3.15.3 from > http://kernel.ubuntu.com/~kernel-ppa/mainline/.

It works like a charm!

files to download 3.15.3 for 64-bit system:

linux-headers-3.15.3-031503-generic_3.15.3-031503.201407010040_amd64.deb
linux-headers-3.15.3-031503_3.15.3-031503.201407010040_all.deb
linux-image-3.15.3-031503-generic_3.15.3-031503.201407010040_amd64.deb

files to download 3.15.3 for 32-bit system:

linux-headers-3.15.3-031503-generic_3.15.3-031503.201407010040_i386.deb
linux-headers-3.15.3-031503_3.15.3-031503.201407010040_i386.deb
linux-image-3.15.3-031503-generic_3.15.3-031503.201407010040_i386.deb

Type in terminal:

sudo dpkg -i *.deb

As found here.

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cremefraiche
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