[SOLVED] KDE does not show max resolution of monitor

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I cannot choose the maximum resolution supported by my monitor in display settings. latest arch/kde + wayland

on X11, I can use Xrandr to add a custom resolution of 1280x1024 and it works fine, it even shows on display settings, but goes away after reboot

[prime rivet]

Update graphics drivers

What graphic card you have?

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Radeon HD 7770

[dawn hull]

try wlr-randr. it works for some people and doesn't work for some as well

for wayland

[prime rivet]

U can set with xrandr

Idk

[dawn hull]

and uhh update grub before rebooting

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that's for wlroots i think, i tried it and got an error saying compositor doesn't support the protocol

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#1346532903626080389 message

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oh yeah you're not on hyprland

I forgot

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...

[dawn hull]

kde had this thing called

kscreen-doctor

try that once

kscreen-doctor -o

[prime rivet]

Run this sudo grub-mkconfig -o /boot/grub/grub.cfg

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that's just update grub

[prime rivet]

Yes

[dawn hull]

it'll not fix resolution errors

[prime rivet]

..

[brisk raven]

Too few arguments for command addnote!
Usage: .addnote <name> <text>

[dawn hull]

it doesnt show your resolution as option, right?

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yep

I'm absolutely sure my monitor supports it

[dawn hull]

kscreen-doctor output.DVI-I-1.mode.1280x1024@60

try to force it maybe

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and it works on X11 manually with Xrandr

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alright

holdup imma login on that pc so i can send proper screenshots lol

[dawn hull]

hmm

cat /sys/class/drm/card0-DVI-I-1/edid > ~/monitor.edid

then nano /etc/default/grub and add the line
drm.edid_firmware=EDID/monitor.edid

then update grub

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file is empty?

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show error

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iis it supposed to be empty?

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not

glxinfo | grep "OpenGL renderer string"

what does that say

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OpenGL renderer string: VERDE (radeonsi, , LLVM 19.1.7, DRM 2.50, 6.13.5-arch1-1)

[dawn hull]

hmm the drivers are fine

sudo cat /sys/class/drm/card0-DVI-I-1/edid | hexdump -C

does this return an error?

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returns nothing

[dawn hull]

hm then your edid isn't being read properly

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windows reads it fine

i could choose 1280x1024 in windows 10

but... i could choose 1600x1200 too which monitor doesn't support

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sudo dmesg | grep -i edid

what does this return

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so... windows cannot read it properly too?

returns nothing

[dawn hull]

its probably a kernel issue honestly

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sigh

[dawn hull]

echo 1 | sudo tee /sys/class/drm/card0-DVI-I-1/status

try that

cat /sys/class/drm/card0-DVI-I-1/edid | hexdump -C

then this again

and if its still empty then we're downloading a generic edid file

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yup its empty

[dawn hull]

wget https://raw.githubusercontent.com/akatrevorjay/edid-generator/master/1280x1024.bin -O ~/monitor.edid

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status file just says "connected"

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just download a generic edid

sudo mkdir -p /lib/firmware/edid sudo mv ~/monitor.edid /lib/firmware/edid/

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done

reboot?

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no

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did this?

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yep

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sudo nano /etc/default/grub

add the line

drm.edid_firmware=EDID/monitor.edid

then update grub
sudo grub-mkconfig -o /boot/grub/grub.cfg

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uhhhh

i don't use grub

i have systemd-boot installed

sorry lol

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sudo nano /etc/kernel/cmdline

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then add this line

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is it supposed to be empty?

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probably

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added

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then

sudo mkinitcpio -P

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done

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now reboot

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let's see...

nope

i don't see any added resolution in display settings

[dawn hull]

also on X11 after forcing your resolution you can try
sudo mkinitcpio -P its basically grub update for systemd

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damn

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imma try this

doing mkinitcpio -P

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sudo bash -c 'echo "options video=1280x1024-60" > /etc/modprobe.d/custom_resolution.conf'

try this one command I found on a sketchy forum cuz those never fail yes definitely never

(on wayland)

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[dawn hull]

I'll be back I have to do my duolingo

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oki thank you for trying to help!

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did not persist

now i will try the command you sent!

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sudo mkinitcpio -P after that (if it even works)

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libkmod: ERROR: kmod_config_parse: /etc/modprobe.d/custom_resolution.conf line 1: ignoring bad line starting with 'options'
libkmod: ERROR: kmod_config_parse: /etc/modprobe.d/custom_resolution.conf line 1: ignoring bad line starting with 'options'

[dawn hull]

hmm

edit the ~/.config/kwinrc

[Wayland]
Backend=

there should be a line like this

set Backend=eglstreams

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im adding thayt

tbh

i should just switch to haiku

[dawn hull]

Lmao

wait one last thing I wanna try

switch to x11

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then?

[dawn hull]

nano ~/.xprofile

add this

#!/bin/sh
xrandr --newmode "1280x1024_60.00" 109.00 1280 1368 1496 1712 1024 1025 1028 1060 -hsync +vsync
xrandr --addmode DVI-I-1 1280x1024_60.00
xrandr --output DVI-I-1 --mode 1280x1024_60.00

save it

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basically a startup script?

[dawn hull]

yep

then chmod +x ~/.xprofile

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this'll most likely work

cuz that was basically what i was doing to force

[dawn hull]

try once

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didn't even work wth

time to rm -rf / --no-preserve-root ?

[dawn hull]

lmao you probably have to force it too

wait

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yes

waiting

[dawn hull]

nano ~/set_resolution.sh

copy paste the same shell script as before

#!/bin/sh
xrandr --newmode "1280x1024_60.00" 109.00 1280 1368 1496 1712 1024 1025 1028 1060 -hsync +vsync
xrandr --addmode DVI-I-1 1280x1024_60.00
xrandr --output DVI-I-1 --mode 1280x1024_60.00

chmod +x ~/set_resolution.sh

but this time

go to system settings

Startup and shutdown

add a script there

in autostart

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oh

it's not DVI-I-1

its just DVI-1

[dawn hull]

.

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i mean

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it says dvi-i-1 on display settings

istg im not schizo

[dawn hull]

I saw that too

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.

on system files it shows as DVI-I-1

ye... now .xprofile thingy works

...or it doesn't

hold on\

nvm. it works

not in wayland though... ofc...

welp

what's the funniest way to nuke a linux system?

[dawn hull]

I would say yeeting the ssd itself in pure highly concentrated lava would be pretty funny

anyways

.. solved

[brisk raven]

Too few arguments for command addnote!
Usage: .addnote <name> <text>

[dawn hull]

... solved

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thank you

[brisk raven]

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Thank you

[dawn hull]

imma go sleep now. bye bye

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cya!