[Interest] Main thread (or maybe Quick rendering) freezes when screen turns off?

[Alexander Dyagilev]

Or maybe it's just the QML Timer which stops working when the monitor is
turned off ?

On Tue, Mar 17, 2026 at 2:41 AM Alexander Dyagilev <alervdvcw at gmail.com>
wrote:

> Hello,
>
> It seems that there was a new behaviour introduced since Qt 6.9 (at least
> compared with Qt 6.8.2 --> Qt 6.9.3).
>
> We have a long operation in our app and the user can choose an option to
> shut the PC down upon its completion.
>
> Upon completion, we show a confirmation dialog with a count-down timer (we
> use QML Timer for this).
>
> All was working fine prior to 6.9.3. Since 6.9.3 operation completes, but
> nothing happens. When the user turns on the monitor our app shows this
> confirmation dialog with a countdown timer started.
>
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