Burn-in on display?

MNT Pocket Reform
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I left my pocket open with the MNT reform screen for about, well it was probably about 4 or 5 hours, but I was surprised when I came back to it that the Reform website, which is what I had open, was now… overlayed over emacs, very visibly.

Then I powered it off fully and powered it back on hoping it’s a driver issue but nope, it’s still there.

Is burn-in a known issue with these screens? I’m genuinely surprised that seemed to happen so fast?

I’m leaving it off for a while before I turn it back on, but…

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Well, I had powered it off and powered it back on immediately earlier when I saw the issue persist. But I powered it off for an hour and back on and… it’s fine! So if you run into this, try powering it off for a bit???

No idea why that would happen but it’s a relief!

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Yes, I’ve seen this happen, but as you discovered, this ghosting is not permanent. It’s probably worth investigating swayidle or even a screensaver ^^

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Automatic display off would also be nice :slight_smile:

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swayidle should be able to do that (with dpms off or brightnessctl).

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I’ve added a variant of the sample from Sway - ArchWiki to my config now.

exec swayidle -w \
    timeout 240 'swaymsg "output * power off"' \
    resume 'swaymsg "output * power on"'

Turning the output off is about 200mA on imx8mp :slight_smile:

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I tried this on my big reform and I get:

Error: Invalid output subcommand: power.
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Seems like on Debian stable the command was still called “dpms power” instead of just “power”. Don’t know about the exact syntax, https://dyn.manpages.debian.org/jump?q=sway-output doesn’t work for me.

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From sway-output(5) — sway — Debian unstable — Debian Manpages

output power on|off|toggle

Turns on or off the specified output.

As opposed to the enable and disable commands, the output keeps its current workspaces and windows.

output dpms on|off|toggle

Deprecated. Alias for power.

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