Something is preventing shutdown...

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Does anyone how how I can diagnose and fix this problem:

Sometimes, but not always, when shutting down the process does not actually complete and the computer does not turn off.

The screen turns off but the keyboard backlight is still responsive, the fan is still going and the power-on LED is lit. Because the screen is turned off I can't interact graphically with the computer and have to just hold down the power button and do a hard reboot.

I haven't tested it properly but I get the feeling it happens more often if I have been doing audio work.

Debian 13
GNOME 48
Intel Core Ultra 7 Laptop

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36

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something with the DE I suspect. KDE will do the same thing. never had the issue with another compositor/WM but with KDE Plasma every now and again the exact same thing you're experiencing would happen. shut down, something in Plasma is still going and same results as you.

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I don't think so. all user processes should be stopped in one way or another before the screen is turned off

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