Ubuntu: Ubuntu 16.04 LTS graphical slow downs



Question:

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...


Solution:1

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.


Solution:2

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.


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