[Interest] Windows-64 specific QML UI flickering

Rui Oliveira ruilvo at hotmail.com
Mon May 10 14:20:29 CEST 2021


I think I reported a similar thing in 

Is this like your problem?

It doesn't happen with Software or OpenGL rendering.

Às 13:12 de 10/05/2021, Benjamin TERRIER escreveu:
> On Thu, 6 May 2021 at 02:21, Jason H <jhihn at gmx.com 
> <mailto:jhihn at gmx.com>> wrote:
>     I use mainly Mac and Android and I don't see these issues, however
>     the Windows 64 experience is very crunchy. I was asked to make a
>     simple serial port monitor. I developed on my mac. It's solid.
>     It's got QML UI using Rows, Columns, Text, TextEdits (Controls
>     v2), and a ComboBox (Controls v2) for selecting the serial port.
>     However, I've tried it on 2 HP laptops:
>     - The first shows triangular artifacts, like a GL triangle is
>     glitching, but the triangle is very acute, and fleeting.
>     - The other one doesn't glitch with the triangle, it redraws the
>     background then draws on top of it (as it should). But here's the
>     crazy thing, it's got a rhythm like a heart beat like
>     .....|.|;.....|.|; where the | indicate the text fields
>     disappearing, reappearing. (so in one cycle the controls flicker
>     twice with a short pause between them, and. along pose separating
>     them) One cycle is on the order of about 2 seconds.
>     Nothing in the UI falls into this pattern.  The serial port stuff
>     is async.
>     How do I fix this?
> Does it look like this: https://bugreports.qt.io/browse/QTBUG-49866 
> <https://bugreports.qt.io/browse/QTBUG-49866>
> I was never able to fix it, but it only affected a Intel CPU that we 
> only had in a couple of development PCs.
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