Ubuntu: Ubuntu 16.04 LTS graphical slow downs


I have been a Ubuntu lover for many years, and now that I have my own and new workstation set up again, I am dual booting my lovely Ubuntu with W10! I installed Ubuntu 16.04 LTS and actually tweaked a lot, for various reasons and different problems. I installed the last proprietary NVIDIA drivers, but I am occasionally having random slow downs, and sometimes freezes.

I am currently using Gnome Shell, but if I'm not wrong I experienced the same issues with Unity. It is really annoying, as I can't work fluently and as fast as I can, and speed is one of my main priorities. I tried to remove as many extensions I could on gnome shell, but I'm absolutely keeping the one I really need for my comforting UX. The effects are almost null, but it shouldn't be absolutely the issue here! I am mostly experiencing this problems with Firefox. (I tried Chrome, is just a bit better)

Something that upset me considerably, is how the system substantially kept freezing and lagging, when I tried to run an old VBox VM! Both guest and host became almost unusable...

By the effects I can determine that it is graphics related, but I don't know what is causing the problem here. On Windows 10, the system is working like a charm (almost I'd say, random audio lags excluded caused by the ALC1150 soundcard)

My workstation specs are the following:

  • Intel i7-6700k
  • 16GB DDR4 3000MHz CL15
  • NVIDIA GeForce GTX 1070
  • Samsung NVMe SM961 256GB (3200MB/s read - 1500MB/s write)

I would be really thankful and delighted by any sorts of help given!!

Cheers, Luca!

edit: sys logs https://gist.github.com/Sevenarth/66eec491b66218e3262e2b4276d262cf

sowia@qwurth:~$ lspci -k | grep -EA3 'VGA|3D|Display'  01:00.0 VGA compatible controller: NVIDIA Corporation Device 1b81 (rev a1)      Subsystem: eVga.com. Corp. Device 5173      Kernel driver in use: nvidia      Kernel modules: nvidiafb, nouveau, nvidia_367, nvidia_367_drm  

edit: I tried to benchmark my GPU and it is way slower than Windows...

edit: Drivers updated to 375. Huge performance boost, though I noticed that on GNOME it immediately slows down after a while. I have to try Unity, which is amazingly fast...


During the freezes you'll have to actually check what the system is doing, or log it somewhere.

You can start by reading out the output of:

  • /var/log/syslog
  • /var/log/dmesg

Sadly I don't have any suggestions of what might be causing the issues, other then the graphic card driver, which might not be at its best shape yet.


Finally i discovered the source of the problems. As my graphics card is connected to the motherboard through a PCI-E riser, at a certain point the computer kept unrecognising my graphics card, and that is when i figured that it was the riser that was faulty. I ordered a replacement, and now everything works great as it is supposed to do.

Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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