Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I have updated my 12.04 HTPC to 14.04 (new install; same hardware), and have started getting awful screen tearing where I had none before.

/proc/cpuinfo

AMD A4-3300 APU with Radeon(tm) HD Graphics

lspci

...

01:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2)

...

lsmod

...

nvidia 10675249 71

drm 302631 2 nvidia

...

Everything is from the official repos.

xbmc_12.3+dfsg1-3ubuntu1_all.deb

nvidia-331_331.38-0ubuntu7_amd64.deb

share|improve this question
    
can you add an image to show what this is about? next: ANY weird behaviour regarding artifacts should be a -bug-. So best option would be to file a bug against the corresponding package –  Rinzwind Apr 19 at 12:43
    
Confirmed for working. Using Ubuntu 14.04 , XBMC 12.3 , and nVIDIA 331.38. (GT440) –  user271129 Apr 19 at 19:36
    
Thank you! install libsdl1.2debian from Timo Jyrinki repo solved it for me too with kde and amd apu 8670D –  Zigala Apr 30 at 9:19
add comment

4 Answers 4

up vote 10 down vote accepted

I too had this problem after upgrading to 14.04

The solution mentioned here worked wonders for me,

https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1278012/comments/12

A workaround for ubuntu 14.04 with nvidia driver is to disable backing store in xorg: Make sure you have the "-bs" option in lightdm config file:

cat /usr/share/lightdm/lightdm.conf.d/50-xserver-command.conf
[SeatDefaults]
# Dump core
xserver-command=X -bs -core

If you're using another mechanism for starting X you can use the same flag in a similar way. For example, here's startx which is popularly used in XBMC (and other kiosk applications') startup scripts:

startx /etc/X11/Xsession /usr/bin/xbmc-standalone -- -bs
share|improve this answer
    
Perfect. I've added what I needed to do to pass this along to X with startx. Thanks. –  Oli Apr 19 at 16:24
1  
Awesome thanks! Note, this also fixes it for Intel graphics cards (my onboard i3) –  SCdF Apr 20 at 7:40
    
It solved my problem too, with intel ivybridge. Thanks ! –  Toilal Apr 27 at 17:52
add comment

Just to sum up to the Brenden's answer, the real problem is with the libsdl1.2 package, as stated in this bug report.

The solution is ready, but somehow isn't available on default Ubuntu package sources yet (at least not for me). So, a way to solve this is to import the developer PPA and install the patched package directly:

sudo apt-add-repository ppa:timo-jyrinki/ppa
sudo apt-get update
sudo apt-get install libsdl1.2debian

You can later remove the PPA with:

sudo apt-get install ppa-purge
sudo ppa-purge ppa:timo-jyrinki/ppa

All credits to Timo Jyrinki.

This solved the problem for me, in a gnome-shell environment (which uses gdm).

share|improve this answer
    
also seems to solve it –  Jean-Michel Garcia May 4 at 18:29
add comment

I tried both suggestions of adding the -bs as well as enabling that libsdl ppa and neither made my screen tearing go away. Playing minecraft I have major screen tearing when running up and down stairs. I am using a GTX 760 with Nvidia Binary BLOB 337.25. VSync is enabled within the game. Sync to VBlank is also enabled within the nvidia-settings so if anyone else has any other suggestions please let me know, this screen tearing is driving me through the roof!

share|improve this answer
add comment

Screen tearing can also be caused by xfce compositing or window manager with compositing that doesn't suppport vblank sync! To fix the issue i used compton, which completely stops the tearing, it's also quite easy to configure, i followed this guide and i haven't had any problems.

share|improve this answer
add comment

protected by Community May 5 at 19:41

Thank you for your interest in this question. Because it has attracted low-quality answers, posting an answer now requires 10 reputation on this site.

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.