freezes ubuntu on fullscreen.

[Brix Fortuna]

When playing a video on fullscreen ubuntu freezes

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: vlc 3.0.3-1-1ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18
Uname: Linux 4.15.0-33-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Aug 26 22:31:46 2018
InstallationDate: Installed on 2018-08-22 (4 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
SourcePackage: vlc
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastian Ramacher (s-ramacher)]

Are you using X11 or Wayland?

[Brix Fortuna (brixlinux02)]

I'm new to ubuntu so I can't tell. Can you help me out?

[Sebastian Ramacher (s-ramacher)]

https://unix.stackexchange.com/questions/202891/how-to-know-whether-wayland-or-x11-is-being-used documents different ways to determine the type.

[Brix Fortuna (brixlinux02)]

Thanks for your reply. So I've read the forum and manage to identify my current session. I'm currently login on X11. Can it be fix?

[Sebastian Ramacher (s-ramacher)]

Please provide the output of vlc -vvv (e.g, pipe it to some file so that the data is recorded even when the screen freezes). Also an xorg.log and the syslog might be helpful.

[Sebastian Ramacher (s-ramacher)]

Please also try if disabling hardware acceleration "fixes" the issue.

[Brix Fortuna (brixlinux02)]

This is my Xorg.log

[Brix Fortuna (brixlinux02)]

This is my syslog

[Brix Fortuna (brixlinux02)]

Also I tried running vlc -vvv and played a video it worked fine up until I switched to full screen, then my whole screen displayed a horizontal lines of colors.

[Sebastian Ramacher (s-ramacher)]

Okay, so this looks like a bug in the nouveau driver to me. Did you also try the proprietary nvidia driver?

[Brix Fortuna (brixlinux02)]

I'm running the onboard display. Should I disable nouveau?

[Launchpad Janitor (janitor)]

[Expired for xserver-xorg-video-nouveau (Ubuntu) because there has been no activity for 60 days.]