Red glitch before lock screen shows up

[hengtseChou]

I am trying to pick a locking utility for the niri setup. However, with swaylock and hyprlock, they glitch a red screen very briefly before proceeding to display the lock screen normally. I believe it is very similar to issue #341?

I have tried out niri 0.1.9 on arch extra and 0.10.1 on arch extra-testing, and they both showing same glitch.

Thank you for this amazing project!

System Information

• niri version: 0.10.1

• Distro: Arch 6.11.8-arch1-2

• GPU: Intel Iris Xe Graphics

• CPU:Intel i5-13500H

[YaLTeR]

Hey, it's not a glitch, it's niri's locked session background. It shows up because niri doesn't wait for the lock screen to present a surface before drawing the locked session. This is tracked as part of #119.

With hyprlock specifically, there's an extra problem that it animates from transparency, so niri's red locked session background shows up during the animation. Sway seems to use a black background under lock surfaces so you don't notice it there. I'm not sure if the protocol mandates using a black background in this case.

[lpnh]

My approach to this is to use a script calling do-screen-transition before the lock screen command:

#!/usr/bin/env fish

niri msg action do-screen-transition --delay-ms 300

swaylock -f

To bind a script in your niri config, using the spawn action:

binds {
    Mod+T { spawn "~/scripts/do-something.sh"; }
}

[hengtseChou]

@lpnh Appreciate the workaround!

[hengtseChou]

@YaLTeR Thanks for the clarification 😌

[YaLTeR]

Ah yeah, the screen transition workaround, thanks!