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#1 2018-07-21 10:46:39

From: UK
Registered: 2012-01-16
Posts: 880


I'm not sure if this is the correct place to post this, and I'm not so sure it's any longer an issue for me, but in case anyone else finds it useful.

My system is:

CPU:       Topology: Quad Core model: AMD Phenom II X4 965 bits: 64 type: MCP L2 cache: 2048 KiB 
           Speed: 800 MHz min/max: 800/3400 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 4: 800 
Graphics:  Card-1: NVIDIA GK104 [GeForce GTX 680] driver: nvidia v: 396.24 
           Display: server: X.Org 1.20.0 driver: nvidia unloaded: modesetting,vesa resolution: 1920x1080~60Hz 
           OpenGL: renderer: GeForce GTX 680/PCIe/SSE2 v: 4.6.0 NVIDIA 396.24 

I do a lot of work with blender, rendering on GPU. Lately, I've found that either the render will crash (taking the whole system with it), or escaping a render would turn my system into a very very bad stop motion - i.e. move the mouse, then go an brew up until it moves.

After experimenting with downgrading cuda, downgrading nvidia drivers, and with the aid of a conky config, I found xorg was consuming a massive amount of CPU load only after a render. because of the stop motion element, it took a while before I noticed that compton was taking up the same, massive CPU load.

Disabling compton and reverting to xfce's compositor has fixed the problem for me. I'm pretty sure I only installed comptom to fix a vsync issue in nvidia drivers a while ago, that have since been fixed, hence my saying it may no longer be an issue for me. However, it's taken me a fortnight to diagnose this,and I can't be the only one, so posting to help others.

I don't know the root of the problem, but compton hasn't been updated in ages, and so I assume an incompatibility between the most recent nvidia drivers and compton.

EDIT: I decided to remove compton - and find it's compton-git I have installed. It may make a difference.

Last edited by Roken (2018-07-21 10:58:30)


Ryzen 1800x 8 core/16 thread - GTX 1060 6Gb, Asus ROG STRIX B350-F, 16Gb Corsair DDR4, Cooler Master N300 chassis, 6 HD (2SSD - 4Spinners) + 1 x optical.
Linux user #545703


#2 2018-07-21 14:06:14

Inspector Parrot
Registered: 2011-11-29
Posts: 19,755

Re: compton

"UNIX is simple and coherent..." - Dennis Ritchie, "GNU's Not UNIX" -  Richard Stallman


#3 2018-08-01 10:57:57

Registered: 2007-04-03
Posts: 3,664

Re: compton

In XFCE, try the great, "new" Present compositor in xfwm4-git, instead of Compton.


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