I'm very new to Ubuntu and the whole Linux ecosystem. I installed Ubuntu on my 2015 Dell Inspiron 5559 a couple of days back and it's been performing better than Windows in most cases.
One thing I realized was when playing YouTube/Twitch videos, there seems to be a graphics hiccup of some kind that I'm unable to explain. Basically, in online videos where there are like fast scene cuts, some barely noticeable horizontal lines appear and they seem to be flickering. First thing I did was switch back to Windows to see if I'm right, and yes - it doesn't seem to appear in Windows.
So my assumption is that not having or not having updated AMD drivers. I can't seem to figure out whether I have the required drivers. Here's a command I executed and the output I got.
lspci -nn | grep -E 'VGA|Display'
00:02.0 VGA compatible controller : Intel Corporation Skylake GT2 [HD Graphics 520] [8086:1916] (rev 07) 01:00.0 Display controller : Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330 / M430 / Radeon 520 Mobile] [1002:6660] (rev 81)
Appreciate if I could know how I'm supposed to know whether I have the updated drivers for the graphics cards. Also, please let me know if there's any other setting that might cause the problem in online video playback. My Ubuntu version is 1804 Bionic Beaver.
Thanks in advance.