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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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Monitors won’t sleep on idle pc (lemmy.ml)

submitted 1 year ago by SeckoObsadene@lemmy.ml to c/linux@lemmy.ml

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So I’ve set up pop os, everything went smoothly. But I have a problem - My pc is set to turn screens off after 15 mins, also to lock itself. But when it does that, my monitors shut down for a second, then start again so I can see it’s locked, then after few seconds monitors are blank but not turned off, led indicator is active and so is backlight panel.

It bothers me because I don’t want to physically turn off my monitors every time I go afk.

Can anyone tell me where to set this up? Thx

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[–] NixDev@programming.dev 3 points 1 year ago (1 children)

What type of monitors do you have?I had the same issues with my BenQ monitors about 2 years ago and never found a solution. I ended up using it as an excuse to upgrade from 1080 to 1440.

Everything worked fine for a few years with the BenQ then after an update it started happening.

Have you tried a different distro? Just boot from a USB image and give it a few min to sleep. Wondering if it is a x11 or Wayland issue with older monitors

[–] SeckoObsadene@lemmy.ml 1 points 1 year ago (1 children)

Yes I had same issue on Mint on another pc (laptop with built in monitor) so it has to be fixable. I have 2 monitors - Samsung and Asus, I don’t think they are the problem. It has to be driver or some settings I can’t find. I can see mouse cursor and black screen, sometimes it will bring OS back to Lock Screen without me interacting with mouse or keyboard.

It starts to be annoying

[–] joshcodes@programming.dev 2 points 1 year ago (2 children)

I think it's a fun (hahaha not) part of the hdmi protocol. I have the same monitor combo and the same issue with the monitors. I find that turning one off fixes it (usually Samsung since my Asus monitor completely shuts down for power saving) but I also remember at least one of my distros not having this issue. Unfortunately it's not Ubuntu which I'm on at the moment so I can't help but either Fedora, Debian or Manjaro didn't have the issue.

[–] unwillingsomnambulist@midwest.social 2 points 1 year ago (1 children)

Happens to me with three Dell displays attached to an AMD GPU with DisplayPort. Distro is EndeavourOS. Whenever it happens there happens to be a kernel update available and, after installing it and rebooting, the problem goes away for a few days.

[–] SeckoObsadene@lemmy.ml 2 points 1 year ago

I’ll have to fix it myself then. It’s weird how it works , even on the old thinkpad is the same.

[–] NixDev@programming.dev 1 points 1 year ago

Never thought about HDMI being the issue. My new monitors are display port and have been working fine. So a HDMI bug is probably the cause