Resolution change in Ubuntu Mate 18.04

Asked by Malathi on 2019-08-05

I'm using Ubuntu Mate 18.04 in Raspberry Pi 3b+. My display window is too large , please help me to minimize the screen resolution. I followed some methods suggested in internet

1. I changed the screen resolution using "sudo raspi-config" . I have tried all the resolutions in screen resolution option(including Default, CEA, DMT)

2. I changed the disable_overscan=1 in /boot/config.txt

3. I tried to change manually for resolution in display settings.

But still I didn't get the screen resolution changed.

Help me to solve this.

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What is the output of:

suod lshw -C display; lsb_release -a; uname -a; xrandr


Malathi (malathi) said : #2

Thanks for your reply, I got the following output:

"sudo lshw -C display; lsb_release -a; uname -a; xrandr"

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
Linux ioz-desktop 4.15.0-1032-raspi2 #34-Ubuntu SMP PREEMPT Wed Feb 6 11:50:42 UTC 2019 armv7l armv7l armv7l GNU/Linux
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 592 x 448, current 592 x 448, maximum 592 x 448
default connected primary 592x448+0+0 0mm x 0mm
   592x448 0.00*

So I'm guessing the resolution is too low and everything is really big? Is this the case?
Is the OS fully updated?

Malathi (malathi) said : #4

Yes,the screen is very big.
I have updated os fully now and again changed the screen resolution using "sudo raspi-config",but screen resolution is not changed.

Malathi (malathi) said : #6

Thanks a lot for this link.The screen became normal : )