Blur in 14.04 lts

[Thauan Soares]

blur in every system, after 24 hours after having announced the ubuntu thusty thur, I have an incredible blur very annoying in every system

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: nvidia-331-updates 331.38-0ubuntu7
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Apr 18 12:20:43 2014
InstallationDate: Installed on 2014-04-17 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: nvidia-graphics-drivers-331-updates
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.modprobe.d.nvidia.331.updates.hybrid.conf: [deleted]

[Benjamin Rood (benisrood)]

This is not very well explained, but I have the exact same problem after upgrading to 14.04 LTS this morning.

I will try to go into more detail about the bug:

-Static windows and text within them which have not been moved across the screen (i.e. have not had to be redrawn) in about 5-10 seconds strangely start to 'blur' - the best analogy I can think of is that this blur is very similar to the results of very heavy JPEG compression in digital video files.

-It affects all application windows alike. If the window is 'inactive' it will start to blur.

-It especially affects the terminal and text inside the terminal even if the window is selected/active and you are typing in it!

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Benjamin Rood (benisrood)]

Sorry, forgot to attach list of dependencies.

Also forgot to mention that I tried uninstalling and pruging all nvidia drivers then rebooting, then re-installing nvidia proprietary drivers - it did not fix it.

I will say that I DID NOT uninstall the nvidia drivers before running update-manager to go from 13.10 -> 14.04LTS

[Thauan Soares (thauansoares2009)]

Bad we did not perform the update-dist command, I installed 4.14 from scratch. How to fix my problem?

[Benjamin Rood (benisrood)]

Okay, the fix for this is to disable FXAA antialiasing in nvidia-settings.

In the terminal, type:

nvidia-settings

Then a control panel will open.

Uncheck the FXAA Antialiasing box.

Screenshot attached.

This is a duplicate of the following bug report:

https://bugs.launchpad.net/ubuntu/+source/nvidia-settings/+bug/1307236

[Thauan Soares (thauansoares2009)]

Problem solved, thank you (Single helped "Benjamin Rood").

[Ravenise (ravenise)]

I can confirm the same issue with my system, using an NVIDIA 660 GTX, running Mint 17 with Nvidia drivers 331.38. Turning off FXAA didn't work for me. None of the settings made a difference. The only thing worked was removing the NVIDIA settings file as suggested by xavier zinn. Now everything seems to be running flawlessly.

Delete .nvidia-settings-rc
you find it by doing a ls -al (it shows the hidden files/directories)

All I did was find the nvida-settings file and deleted it. Log out and log back in, and all should be good. The file gets recreated.