Mixxx slows down and cursor disappears when touching EQ filters

[Nicholas Niendorf]

MacBook Pro (Retina, 13-inch, Early 2015)
2.7 GHz Dual-Core Intel Core i5
8 GB 1867 MHz DDR3
Intel Iris Graphics 6100 1536 MB

macOS Big Sur 11.6.5 (20G527)
Mixxx 2.3.2

Hi! Running Mixxx on my MacBook and it runs very slow—there's a delay in most actions and the waveforms look "jumpy" due to delays.

The biggest issue, however, is that when two tracks are playing and I touch an EQ knob with my cursor, the cursor disappears. Sometimes it reappears, but for the most part Mixxx becomes unusable.

I just reset my Laptop to factory settings so the only thing on it is Mixxx and ~80 songs.

I've attached a screen recording—if you see my cursor disappear, that's the bug.

[nPrevail (nprevail)]

To my understanding, the cursor should disappear when you're in the middle of "holding left click" on an EQ knob. I believe Traktor does the same thing as well.

When you let go of "left click," the cursor should reappear unmoved from the EQ knob, and should work as a regular cursor.

Are you saying that when you "tap left click" over an EQ knob, the cursor disappears and never reappears?

[Nicholas Niendorf (niendorf21)]

@nprevail that's correct, when you left click the eq knob while under load, the cursor disappears and never reappears.

[nPrevail (nprevail)]

So it looks like the cursor gets placed beneath the Mixxx GUI, but it's still functioning in the background...

Can you try replicating this issue in "Maximized window," but not "Full Screen" view? I feel like I came across a similar issue to this, and the temporary solution was "don't use Full Screen," so I just maximized the window in Linux.

[Daniel Schürmann (daschuer)]

This is a related bug:
https://bugs.launchpad.net/bugs/1130794

[Daniel Schürmann (daschuer)]

https://github.com/mixxxdj/mixxx/pull/4744

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/10715