ErP and CEC2019 ready BIOS options do nothing

General system Kernel, boot, graphics & hardware
1

I’ve always used the ErP and CEC2019 ready settings in my BIOS to make sure my RGB keyboard doesn’t light up when I turn on the power for my computer and screens.

However, since a recent kernel and/or BIOS update, when I turn on the general power, the USB ports receive now receive power (the RGB lights of my keyboard light up even though I haven’t turned on my computer).

I made sure to reset my BIOS settings to default (advised after a BIOS update) and I made sure to enable ErP + CEC2019 ready, boot and then shutdown and then boot and shutdown again once more.
I have no idea why this currently isn’t sticking.

It’s a Gigabyte B550 Vision D motherboard.

2

I would think a BIOS/UEFI setting, my pc does a check to make sure its has power or some weird thing I can’t turn off and just accepted.

3

Maybe a strange question, but did you save the changes in your BIOS ?

4

The weird thing is this worked just fine years before and ErP’s specific purpose is to stop the USBs from doing this.

When I shut down my computer it all turns off correctly, but when I turn the power back on at the socket, the RGB lights come on and my audio interface also gets power.

The thought had crossed my mind it might be the CMOS battery and the motherboard would forget my settings, reverting back to default, but all my preferences are saved perfectly.

5

Always do Save & Exit. I’ve done it multiple times and when I dive back into the BIOS, ErP and CEC2019 are still enabled.

6

Does it turn off a few seconds after? If so probably similar to me where it is checking if there is enough power to boot or something (been ages since I looked it up)

7

This seems a bit odd, unless CMOS is dead and it just reverts (this is just a guess, not someothing I normally play with)

8

Sounds like a hardware problem to me, maybe a bad USB connection, did you try a different USB port already ?

9

No, they stay on indefinitely. Once the power is restored but the computer isn’t turned on, the computer just lets power run through the USB ports as if the ErP and CEC2019 settings are disabled, but when I check they’re still listed as enabled in the BIOS.

10

Hmm, I would look up settings for your bios/uefi 95% sure this is what is causing it, you may end up at a dead end like me however, but you can boot?

11

I considered this possibility, but then that would mean all of my motherboard settings would be getting reset to the default, no?

When I enter the setup menu, everything is the way I left it, most notably the Advanced Mode of showing all options instead of Easy Mode, which it defaulted to when I purposefully reset everything to default.

12

I think it is something to do with S-numbers but yer this is beyond me right now sorry hey, hopefully someone smart can chime in

13

I agree, it can’t be any other part of the computer or OS.

It’d be one thing if it was impossible to cut the USB power in general, but I’ve used these ErP and CEC2019 settings for years before the latest BIOS update I did.

As I seem to understand it, some people online with certain other Gigabyte motherboards have reported ErP settings not taking after certain updates. If nothing else comes up I’ll have to reach out to Gigabyte to inquire.

14

As far as i know you need to disable ErP.

15

Well I just enabled ErP and now my USB 3.0 drive does not get power when the computer is off, while it did get power when Erp was disabled.

16

Look in your bios for usb power options, enable/disable them to what you want.

17

Well that’s not the way it’s supposed to work from what i read. So is this what you want or?

18

Yes it is , and for what i read in my BIOS manual that is what is suppose to do when enabled, but maybe my BIOS works the wrong way around ?

19

I think the manual is wrong. :laughing:

1 Like
20

This would not surprise me in the slightest