xorg.md

Xorg

• ./Gnome
• ./Systemd
• ./Ubuntu

xrandr

• autorandr

Disable external display

xrandr --output HDMI1 --off

Make laptop display the primary display

xrandr --output eDP1 --primary

Mirror laptop display to a higher-resolution external display

xrandr --output HDMI1 --auto --same-as eDP1 --scale-from 1366x768

Rotate monitor and set as primary

xrandr --output DP1-1 --auto --rotate left --left-of DP1-3 --primary

xset

• ArchWiki

Disable display power management

xset -dpms

Query

xset q

Set DPMS times: Standby: 600, Suspend: 1200, Off: 1800

xset dpms 600 1200 1800

Find the program that grabbed a key combination

StackOverflow

tail -f /var/log/Xorg.0.log|grep -i -A 7 active

# In another terminal:
KEY="SUPER+space"; xdotool keydown ${KEY}; xdotool key XF86LogGrabInfo; xdotool keyup ${KEY}

Sample output:

[   603.755] Active grab 0x40a00021 (xi2) on device 'Virtual core keyboard' (3):
[   603.755]       client pid 5049 /usr/lib/ibus/ibus-ui-gtk3
[   603.755]       at 603733 (from passive grab) (device thawed, state 1)
[   603.755]       xi2 event mask for device 3: 0xc000
[   603.755]       passive grab type 2, detail 0x41, activating key 65
[   603.755]       owner-events true, kb 1 ptr 1, confine 0, cursor 0x0
[   603.755] (II) End list of active device grabs

Mouse cursor theme

sudo update-alternatives --config x-cursor-theme