Layer 2 get's locked on when using Access Layer 2 key

[ahoneybun]

Issue:

When using the attached layout and tapping the Access Layer 2 key multiple times in a row the lights can get stuck like in this video:

TRIM_20211217_223854.mp4

launch_layout_1.zip

[hiruko-san]

the issue usually happens when I'm adjusting my volume, so it's just one single key press on the "access layer 2" / "Fn" key, or to be precise, a single press & hold, while I adjust the volume with "+" or "-" or mute. It's random and purely based on chance when it happens.

I've also noticed this only happens if I don't have any lights on the first layer, (i.e. Layer 1 LED is completely disabled). For example, if I set Layer 1 LED to all white, Layer 2 to Blue for "bound keys only", I could not recreate this issue, it will always return to white LED.

[gondolyr]

I'm glad I'm not the only one experiencing this issue.

I didn't get any responses in my previous filing here: #48

[leviport]

This might be fixed by system76/qmk_firmware#34

[andy0130tw]

@leviport I tried the provided PR, but it was not fixed.

[zerobearing2]

having same issue

[zerobearing2]

having same issue

Almost 2yrs later and still having same issue. 😟

[andy0130tw]

After years of usage, I have convinced myself that this lighting issue comes from some synchronization issue that may not be solvable.

Referring to the schematic diagram of this board, the LEDs are connected like a long strip. If you observe more lighting glitches, you will notice that the top row is more frequently glitched than others, and they are at the farther end of the LED strip. My theory is that the time duration pressing/releasing a key in succession is often too brief for the entire set of LEDs to react to the signal, and some signal are lost afterwards.

I am not a hardcore keyboard guy (even not a hardware guy), so if someone can help elaborate on this, I will greatly appreciate.