How to turn the screen total/pitch black in GNOME?

## Use case / Problem I wanna hear music in the night with my laptop/device and as such I want the screen to be black, as I don't want to get dazzled in the night. ### Tried workarounds/“solutions” As such, …: * I cannot put it into **standby** for obvious reasons (music playing stops) * I cannot **close the lit** without going into standby (I know I can adjust this in gnome-tweaks, but really… I don't wanna disable and re-enable this each time I want to do this, because I usually want to keep the default and very sensible behavior of getting into standby when the lid is closed) * I _could_ try any **physical solutions** to the problem, like closing the lid partially, wearing sunclasses or eye masks or placing the device facing me away or even putting some light-blocking object between me and the device. However, this would cause other downsides like needing to reverse the workaround when you want to pause the music or skip a track or so (access to keyboard could be limited in these scenarios). Also, it's _really_ inconvenient. (but closing the lid is e.g. sth. I instinctively do as a workaround, and it's not perfect due to the [light reflection](https://en.wikipedia.org/wiki/Reflection_(physics)).) * One solution that partially works, even though it may not be obvious at first, is: **Lock your screen**! This [does not only prevent from cat pictures (or similar) appearing on your screen](https://lockyourscreen.com/) , but also actually fade the window to black in recent GNOME versions. The problems with this solution/approach are: * Any keypress will wake the screen up, even if it is just the keyboard button for pausing music or skipping a track. * Worse, any notification will wake your screen up. (Again I could circumvent this by enabling “Do not disturb” mode, but really, do I want to do that just for that? Again very inconvenient.) * Also, there may the inevitable “This system will go to standby soon” notification (at least in GNOME 41), which _will_ wake-up your screen, * Now, worst though, after your screen woke up once and you are now at the login/lock screen, if you wait _the screen will not turn black again_ automatically. The only workaround I found for this is logging in and, yet again, re-locking it. Do I need to say another time this usability s………eems to be not the best? An “old” solution I had was one: * Another laptop I used had a special **Fn button**, which would just turn the whole screen black. It looked as if it was not a hardware thing, but somehow GNOME really interpreted that key correctly. Now, I desperately miss that key or that feature in general. ## Solution wanted I want to have a **keyboard shortcut/hotkey** or something equally easily accessible that just **turns the screen black**. Pitch black, so I am not dazzled. It, thought, _must not_ turn the device into standby. (Music players usually have a lock on that, so GNOME won't do that by default anyway, but one could always trigger standby manually of course.) How can I do that? ## System GNOME 42.1 Fedora 36 (Silverblue) ---- Cross-posed [to Fedora Ask](https://ask.fedoraproject.org/t/how-to-turn-the-screen-total-pitch-black-in-gnome/22426?u=rugk) . Feel free to submit your answer there, too, if you have one.