MSI B450 Mortar pulses when not told to.

[westjgames]

sudo ./msi-rgb FFFFFFFF 22220000 DDDDDDDD -ir -ib -ig

This results in the beautiful purple colour I wanted, but it's always pulsing, despite me not adding that flag.

Adding --pulse causes the lights to not turn on at all.

I get the feeling this board expects the inverse of everything it's sent? (I had to invert all the colour values to get the one I wanted)

[rockybulwinkle]

I'm experiencing the same issue on the B450 tomahawk with a Ryzen 3600. I get a purple pulsing color with westjgames' command.

[rockybulwinkle]

It also turns off for me when I pass the --pulse argument.

[AzaIndustries]

Yeah I've tried all kinds of combinations to try and remove the pulsing. Either it pulses with all inverted: msi-rgb ff0000ff 0000ff00 00ff00ff -ir -ig -ib Or it's completely off with inverted+pulse: msi-rgb ff0000ff 0000ff00 00ff00ff -ir -ig -ib --pulse Or it pulses just blue/green/white with: msi-rgb ff0000ff 0000ff00 00ff00ff

Colour values are a bit weird but I can deal with that. I just want solid color transitions. =/

[rockybulwinkle]

Yeah I've tried all kinds of combinations to try and remove the pulsing. Either it pulses with all inverted: msi-rgb ff0000ff 0000ff00 00ff00ff -ir -ig -ib Or it's completely off with inverted+pulse: msi-rgb ff0000ff 0000ff00 00ff00ff -ir -ig -ib --pulse Or it pulses just blue/green/white with: msi-rgb ff0000ff 0000ff00 00ff00ff

Colour values are a bit weird but I can deal with that. I just want solid color transitions. =/

Yeah.... I think someone needs to look into how the MSI's b450 boards work a little more. I may take a look myself if I find myself with the time.

[westjgames]

#79

[xorrito]

I can attest that I too have this issue. I have the B450 Tomahawk with the ryzen 7 2700 LED cooler. the cooler connected to the LED header follows the same issue as the on board LEDs. If there is anything I can do to help, let me know.

[bpiero]

#102

[pradyunsg]

For anyone wondering what's relevant about @bpiero's referenced issue, the first sentences are:

My MB (mortar max) was sometimes turning mad and pulsing when not told to, and I noticed that it can't be stopped ( sudo ./target/release/msi-rgb FFFFFFFF FFFFFFFF FFFFFFFF --disable ). I suspected that there should be some kind of memory that wasn't flushed, so I did reboot under windows and I turned off the lights in Mystic Light, reboot under linux and it solved the issue.

Based on this, one solution for this problem seems to be:

• Boot into Windows
• Use MSI Mystic Light to disable all LEDs
• Boot into Linux
• No more pulsing!