Arch Linux

hook

Member

Registered: 2026-09-21

Posts: 1

cannot login at SDDM after add new resolution

cvt 1440 900 60
# 1440x900 59.89 Hz (CVT 1.30MA) hsync: 55.93 kHz; pclk: 106.50 MHz
Modeline "1440x900_60.00"  106.50  1440 1520 1672 1904  900 903 909 934 -hsync +vsync

xrandr --newmode "1440x900_60.00"  106.50  1440 1520 1672 1904  900 903 909 934 -hsync +vsync

xrandr --addmode VGA1 "1440x900_60.00"

xrandr --output VGA1 --mode "1440x900_60.00"

on display settings show 1440x900 but if add the persistent mode

/etc/X11/xorg.conf.d/10-monitor.conf
Section "Monitor"
    Identifier "VGA1"
    Modeline "1280x1024_60.00"  109.00  1280 1368 1496 1712  1024 1027 1034 1063 -hsync +vsync
    Option "PreferredMode" "1280x1024_60.00"
EndSection

Section "Screen"
    Identifier "Screen0"
    Monitor "VGA1"
    DefaultDepth 24
    SubSection "Display"
        Modes "1280x1024_60.00"
    EndSubSection
EndSection

Section "Device"
    Identifier "Device0"
    Driver "intel"
EndSection

I cannot login. I did ever try remove "Device" and "Screen"

Display manager: SDDM
DE: Cinnamon on x11

Last edited by hook (2026-09-21 09:39:56)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,107

Re: cannot login at SDDM after add new resolution

https://bbs.archlinux.org/viewtopic.php?id=57855

Please post your Xorg log, https://wiki.archlinux.org/title/Xorg#General

Driver "intel" is wrong but for very old IGPs and in that case you'll also require mesa-amber
Also the config there doesn't match the modeline you generated before?

Also please use [code][/code] tags, not "quote" tags. Edit your post in this regard.

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seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,107

Re: cannot login at SDDM after add new resolution

Randomly stumbled over this one again
If this is still a problem:

Please post your Xorg log, https://wiki.archlinux.org/title/Xorg#General

Driver "intel" is wrong but for very old IGPs and in that case you'll also require mesa-amber
Also the config there doesn't match the modeline you generated before?

You can post files from the commandline following the 1st link below.

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc