Performance with 2+ monitors is low

Thoughts & Feedback
#1

Hello everyone,

after using Ubuntu Mate 16.10 for a few days, I want to talk about Ubuntu Mate’s performance with more than one monitor. I use my 17" laptop monitor and sometimes either a 32" TV plugged in with HDMI or a second 19" monitor plugged in with VGA.

Every time I go with the mouse cursor from one monitor to another, there appears a grey square of 7*7cm in the top-left corner of every monitor for a few milliseconds. This happens with both external monitors.

When I use my VGA monitor, it sometimes happens that this monitor has a “blackout” for a few seconds (it seems like Ubuntu cuts the connection for a short time, because the monitor shows it’s ‘no connection’ dialog then).

Also, when I’m watching a YouTube video on one screen and browse the web on the other, the Youtube video freezes sometimes for approx. 1/2 second.

Does anyone else experience these performance issues on Ubuntu Mate?

For me it’s really annoying because I’m happy to use UM and want to quit Windows…

Best regards,

Leon

Tearing with Nvidia Geforce GTX 950m
#2

Hi @Leon,

it would help if you tell us what GPU you are using and if you installed any drivers for it?.

See also:

#3

I’m using an Intel Core i5 6200U with internal Graphics and a nVidia
GeForce GTX 950m. I already installed the alternative driver via that
additional drivers program in Ubuntu Mate, so I think I’ve already
installed the right driver…

Leon

#4

Hi Leon,

I assume you installed the package “nvidia-340”?, try dropping down to “nvidia-304” and see if that helps?:

sudo apt-get update && sudo apt-get remove nvidia-340 && sudo apt-get install nvidia-304

THE ABOVE COMMAND IS WORKING ON THE ASSUMPTION THAT YOU HAVE THE HIGHER NVIDIA PACKAGE INSTALLED!.

RESTART AFTER RUNNING THE ABOVE COMMAND!. :thumbsup:

#5

So, now I’m at home. In the program, it seems like there’s the 367 driver installed.
“NVIDIA binary driver - version 367.57 from nvidia-367 is in use”

So, perhaps I should first try nvidia-340 and then nvidia-304 if it doesn’t work?

#6

Go for it Leon, you have nothing to lose!. :smiley:

#7

I’ve tried nvidia-340. With this package, I wasn’t able to login (UM booted, but before login-screen, it stucked in a black screen).

nvidia-304 is not even better than nvidia-367 so that I’m back on nvidia-367 package again.
Hopefully, this is fixed in a future update, but at the moment, I can work with these problems at least :sweat:

#8

So, I just found out that this is a problem with the integrated Intel HD 520 Graphics.

When I activate the Nvidia Graphics (how stupid could I be :joy:), these problems do not appear.

The solution of the problem is at the moment: only use the NVIDIA Graphics :slight_smile:

1 Like
#9

Hi Leon,

I have marked this as solved as you seem to have solved your own Problem!. :smiley: