Crosspost from http://forums.linuxmint.com/viewtopi...f=191&t=168401

I have installed the most recent LMDE 64-bit, also checked the md5 sum to make sure it was genuine. I have a flickering issue where in terminal, after executing a command such as 'ls' the prompt flickers. In firefox, links flicker as you are hovering over a search result in google or duckduckgo, in nemo window manager the tree of folders at the top flickers as you are moving your mouse. This happens periodically but not all the time.

I have a 650TI with 334.21 drivers installed. This behavior was still happening when I was running the live usb of debian.

Let me know if there's any further information I can provide.

I made a youtube video of the issue: http://youtu.be/UbM8fXCegXs?t=1m7s

If you are unable to view the video. Please let me know. I have it under unlisted for the moment.

Just to note that this behavior was not present when I had Linux Mint 16 Petra installed.

Can't see any flickering on the video.

Try making a video where you have a full screen terminal and enter thecommand...

Sorry for the confusion. My term 'flickering' isn't exactly the most accurate term to describe the behavior.

I noticed that you'll need to do 720p or 1080p to view the youtube video to see a better picture of what's happening. I went ahead and found the exact time when the issue is present on the youtube video: http://youtu.be/UbM8fXCegXs?t=1m32s

From what I can describe is happening is:

1. I type a command that outputs something say less /var/log/messages

2. I pressed the 'q' key to exit the less command

3. This brings me back to terminal, however the output from the less command is still trying to show itself. This is the 'flickering' issue

4. Even executing an 'ls' command and pressing the 'enter' key a few times, the 'less' command's output is still trying to show itself.

5. When I type the command 'clear' the 'less' command's output is finally cleared and is no longer tying to 'take-over' the command terminal window.

Also, typing dmesg in terminal only outputs the message buffer in the kernel. This issue is more window manager or compositor related to Cinnamon specifically.

Viewed it full screen on a 1080 x 1920 screen.

Still nothing obvious - the video definitely isn't HD quality - perhaps the camera is filtering out any flicker???

At about 1min 30secs the upper portion of the video does blik in& out as if it's some type of notification but we know that's not the case & it continues doing so after Ctrl^c command.
I can't tell you what's going on but I can say that I saw what I think you are talking about.

I've spotted a slight defect!
I was expecting a high-rate defect (flicker) - but there is a very slow rate defect where the windows appear to contract and expand slightly.

If this was an old CRT display instead of a flat screen, then this used to be a common defect in the screen power supply - especially in cheap models.
If you have a spare screen, it might be worth giving this a try.

(Almost) certainly a screen hardware fault.

[SOLVED]

This has been fixed. The solution was to roll back to Nvidia driver v331.79.

Here are the links that were related to my issue posted by /u/poopyfartclocks at http://www.reddit.com/r/debian/comme...al_650ti_with/

https://devtalk.nvidia.com/default/t...28101/#4128101

and

https://bugs.launchpad.net/compiz/+bug/1288747

Thanks everyone for the support

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