Comment 0 for bug 1975530

I experienced this once while working on https://github.com/mixxxdj/mixxx/pull/4667, and I thought it was caused by switching between main and 2.3 while testing.
Now this was also reported on the forums https://mixxx.discourse.group/t/reloop-terminal-mix-2-equalizer-knobs-not-working/24924/12 and we figured it was caused by the same controls. The forum user appearantly had this issue right from the beginning after installing Mixxx.

Interestingly we both use a Reloop TerminalMix2/4, though I'm like 80% sure I didn't use the controller while working on the EQ preferences page.

These controls are stored with '0' in the config:
[EqualizerRack1_[ChannelN]]
group_[ChannelN]_enable 0

[QuickEffectRack1_[ChannelN]]
group_[ChannelN]_enable 0

These are not used in the TerminalMix mapping.
Removing those lines restores the EQ and QuickEffect.