I can't change Philips 223V5 resolution on Ubuntu 20.04

gutan_orang

10/12/22, 7:24 PM

I connected my old monitor Philips 223V5 to my new PC with Ubuntu using VGA-HDMI adapter. It loaded with bad resolution. I couldn't change it in the settings, because there was only one available option 1024x768 (4:3). I googled some methods.

Firstly, using xrandr.

cvt 1920 1080 60
copy text after Modeline
xrandr --newmode "copied-text"
xrandr --addmode default 1920x1080_60.00
xrandr --output default --mode 1920x1080_60.00

xrandr --newmode gives an error "xrandr: Failed to get size of gamma for output default"

xrandr --addmode outputs the same

xrandr --output prints one more line "xrandr: Configure crtc 0 failed"

It didn't help. Then I changed file /etc/default/grub

the line

#GRUB_GFXMODE=640x480

was edited to my resolution:

GRUB_GFXMODE=1920x1080

sudo update-grub
sudo reboot

It didn't help.

Finally, I found one more way. I've created a file 10-monitor.conf in /usr/share/X11/xorg.conf.d/ with this text:

Section "Monitor"
     Identifier "Philips"
     Modeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
     Option "PreferredMode" "1920x1080_60.00"
EndSection

I used spaces, if it matters. Modeline generated by cvt.

I've installed mesa-utils. There is still only one option 1024x768 (4:3), Unknown Display

I've also reconnected it using the original VGA. And repeated steps with xrandr. Nothing changed.

Now, I don't know how to fix it. Maybe it is related to drivers? But I don't know where to find and how to install them. What additional information should I provide?

123

0 + 0

xrandr

drivers

display-resolution

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: I can't change Philips 223V5 resolution on Ubuntu 20.04

TH: ฉันไม่สามารถเปลี่ยนความละเอียดของ Philips 223V5 บน Ubuntu 20.04

RO: Nu pot schimba rezoluția Philips 223V5 pe Ubuntu 20.04

RU: Я не могу изменить разрешение Philips 223V5 на Ubuntu 20.04

VI: Tôi không thể thay đổi độ phân giải Philips 223V5 trên Ubuntu 20.04

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