Monitor Display Resolution settings incorrect in Zorin OS

General Help
1

Resolution of my Desktop Monitor is 1680x1050 but it shows only 1024x768. How to set it to correct resolution?

2

First we need some info, open the terminal and type;

sudo apt install  inxi
inxi -G
sudo xrandr
3

Setting up lm-sensors (1:3.4.0-4) ...
Created symlink /etc/systemd/system/multi-user.target.wants/lm-sensors.service → /lib/systemd/system/lm-sensors.service.
Setting up inxi (2.3.56-1) ...
Setting up net-tools (1.60+git20161116.90da8a0-1ubuntu1) ...
Setting up mesa-utils (8.4.0-1) ...
Processing triggers for systemd (237-3ubuntu10.53) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Processing triggers for ureadahead (0.100.0-21) ...
bksingh@HareKrishna:~$ inxi -G
Graphics: Card: Advanced Micro Devices [AMD/ATI] Richland [Radeon HD 8470D]
Display Server: x11 (X.Org 1.20.8 )
drivers: fbdev,ati (unloaded: modesetting,vesa,radeon)
Resolution: 1024x768@76.00hz
OpenGL: renderer: llvmpipe (LLVM 10.0.0, 128 bits)
version: 3.3 Mesa 20.0.8
bksingh@HareKrishna:~$ sudo xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1024 x 768, current 1024 x 768, maximum 1024 x 768
default connected primary 1024x768+0+0 0mm x 0mm
1024x768 76.00*

4

Okay, let's first update the driver

sudo add-apt-repository ppa:oibaf/graphics-drivers
sudo apt update && sudo apt -y upgrade

reboot.

5

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