Score:0

Wavy screen OR green rectangles on ubuntu 20.04

cn flag

I have lenovo ideapad 310 and I have installed ubuntu 20.04 on it. I have installed nvidia, so according to settings I have: NVIDIA Corporation GM108M [GeForce 920MX] / NVIDIA GeForce 920... as my graphics.

When I want to scroll in browsers it looks wavy. The wavy screen on chrome and chromium is much worse than firefox.

I used this answer and I add that file to /etc/X11/xorg.conf.d directory and the wavy screen disappears. But another problem occurs. Whenever I reboot I see green rectangles. I used this answer to solve the issue but again I have a wavy screen.

How could I solve both problems?

Matthias Lenmher avatar
nl flag
Could you please provide the driver origin used for u device?
user3741675 avatar
cn flag
I can't understand what you mean exactly but when I run `neofetch` command I receive this result : GPU: Intel Skylake GT2 [HD Graphics GPU: NVIDIA GeForce 920MX In the additional drivers I chose `nvidia-driver-470` which is marked as tested for installation.
Matthias Lenmher avatar
nl flag
Ok, so you are using nvidia-driver-470, Have you tried with `nouveau`?
user3741675 avatar
cn flag
I changed to `nouveau` from Software & Update GUI then rebooted and unfortunately there was no good change. @MatthiasLenmher
Matthias Lenmher avatar
nl flag
could you provide more than "no good change" info?
Matthias Lenmher avatar
nl flag
As i can see, you are under hybrid graphic config... u must have 2 gpu (intel/nvidia), if you have some graphical issues, you considerely change drivers. Also, you are running under IGD or DIS device?
user3741675 avatar
cn flag
I mean after installing `nouveau` and also other versions like `nvidia-driver-418` I have a tearing window. If I open a folder or drag a folder layout or ... the windows is tearing. In firefox if I use the mouse wheel to scroll it is OK, but if I drag the scroll bar then the screen is wavy or tearing. In chrome and chromium it is much worse even scrolling by the mouse wheel is terrible.
user3741675 avatar
cn flag
This [solution](https://ubuntuhandbook.org/index.php/2018/07/fix-screen-tearing-ubuntu-18-04-optimus-laptops/) is good and I don't see tearing window while I scroll by mouse wheel on chrome. But it is not perfect I mean If I double click on a folder tearing screen appears again. I read somewhere ubuntu 21 does not have tearing window!
user3741675 avatar
cn flag
Thanks for your patience and help but I don't know meaning of DIS and IGD device.
user3741675 avatar
cn flag
I am thinking to use `bumblebee` or not.
Matthias Lenmher avatar
nl flag
i'm not a "let software's wizard make all magic for me" devote =), i can't suggest something like that.
Score:0
cn flag

Finally I chose intel for graphic card instead of on-demand, nvidia or nouveau and now the problem is solved and I do not have wavy screen. I hope this answer helps someone else.

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