[BUG] The panel does not respond

[IceDBorn]

The panel stops responding at random times. I have to restart the app to fix this. Mostly happens during heavy operations or when a lot of window changes happen on the hyprland side. The modules I use are playerctl, hyprland taskbar, tray and the submenu/power menu.

[nwg-piotr]

It happens to me too, like once a week. Unfortunately I haven't yet managed to catch any backtrace, so no idea. :/

[IceDBorn]

If this was occuring once a week, I would not even open this issue. It occurs to me every 30 minutes or so. Even now, my panel is not responding. Restarting it...

[nwg-piotr]

Could you start it from the terminal window and wait for it to freeze? Possibly we'll see something useful in the output.

[IceDBorn]

@nwg-piotr We'll do once I get back home!

[IceDBorn]

I do not see anything related. The panel did not respond at the moment the screenshot was taken. After some time (30-40s), the panel started responding again and showed all of the hyprland windows/instances. Still, nothing new printed at the output of the command.

[IceDBorn]

I have created a custom executor which uses curl to determine if my VPN connection is active. When I do not actually have an internet connection though, curl takes a long time to timeout. It seems like the panel freezes until the latest run of the executor is finished. Are the modules not running asynchronously?

[nwg-piotr]

Executor's threads are daemonized, so this should not be the case.

What's not is the Hyprland watcher. I'll try adding daemon=True.

Are you by any chance on Nvidia? I saw a lot of lines with invalid (non-UTF-8) characters thrown from Hyprland socket2 with some apps running on Nvidia. The code should be resistant to the issue, but who knows?

[nwg-piotr]

Let's see if this changes something. Released in v0.9.52.

[IceDBorn]

Nope, I'm using an AMD GPU (RX 6600XT). I'll test this later and report back.

[IceDBorn]

I just tested with 0.9.52. The panel still freezes if I try to spawn a lot of hyprland windows/clients at the same time. Maybe you should debounce the hyprland watcher?

[nwg-piotr]

How many? I have 28 windows open at the time, and nothing freezes.

[IceDBorn]

@nwg-piotr I just open a lot of kitty windows at the same time and the panel freezes. Not a lot, 4-5 windows are enough. I'll record a video and show you how my panel responds.

[nwg-piotr]

Is 36 kitty windows enough? I have 4 panel instances (on 3 outputs) and all are butter-fluent.

https://youtu.be/n7snVbzKVII

[IceDBorn]

Well, take a look at this one https://odysee.com/ngw-panel-not-responding:0

[IceDBorn]

Btw, the panel started responding again at least 1 minute after I had finished recording.

[nwg-piotr]

There will be no solution until I manage to reproduce the issue on my side.