Second screen flickering 16.04
My second screen flickers to black every now and then. It seems to be dependent on what is being drawn in it, because if I just have the desktop open, then it won't flicker very much, but if I have a program in it, it will flicker a lot, and if I have a youtube video playing in firefox on that screen, it will flicker so much that it's off about 85% of the time, and it becomes unusable until I can get firefox onto the main screen. I have used 3 graphics cards in my computer since it started: Radeon R7 260X, AMD RX 550, and AMD RX 560. The second screen is in portrait mode, not landscape. The screen works perfectly fine on Windows, so I know it has something to do with my drivers on Linux. I looked at and it looks most like my problem, except I'm on AMD instead of NVIDIA.
cat /etc/lsb-release outputs
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.3 LTS"uname -a outputs
Linux [my hostname lol] 4.13.0-26-generic #29~16.04.2-Ubuntu SMP Tue Jan 9 22:00:44 UTC 2018 x86_64 x86_64 x86_64 GNU/Linuxlspci -nnk | grep -iA2 vga outputs
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:67ff] (rev cf)
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:8a91]
Kernel driver in use: amdgpuenv | grep DESK outputs
DESKTOP_SESSION=ubuntu
GNOME_DESKTOP_SESSION_ID=this-is-deprecated
XDG_SESSION_DESKTOP=ubuntu
XDG_CURRENT_DESKTOP=UnityThanks!
1 Answer
Oh hey i figured it out. Yay. I followed the instructions here:
This is what it says: Open up a terminal and run
sudo gedit /etc/X11/xorg.conf.d/20-amdgpu.conf
A blank document will pop up. Inside, you need to paste in this stuff.
Section "Device"
Identifier "Radeon RX 480"
Driver "amdgpu"
Option "AccelMethod" "glamor"
Option "DRI" "3"
Option "TearFree" "on"
EndSectionWhy this isn't an automatic setting is beyond me. Ah, Ubuntu. I love you so much.
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