Author Topic: Reduce fan speed during boot  (Read 1074 times)

manatails

  • Newbie
  • *
  • Posts: 15
  • Karma: +0/-0
    • View Profile
Reduce fan speed during boot
« on: June 23, 2023, 01:21:41 am »
Hello, is there a way to modify the pnor so that the machine does not crank up the fan to full speed during initial boot?

ClassicHasClass

  • Sr. Member
  • ****
  • Posts: 444
  • Karma: +34/-0
  • Talospace Earth Orbit
    • View Profile
    • Floodgap
Re: Reduce fan speed during boot
« Reply #1 on: June 23, 2023, 01:39:43 pm »
The reason for the IPL fan test is to ensure the fans work and respond. Other than the noise, is there a reason you'd prefer it doesn't do that?

manatails

  • Newbie
  • *
  • Posts: 15
  • Karma: +0/-0
    • View Profile
Re: Reduce fan speed during boot
« Reply #2 on: June 24, 2023, 12:37:32 am »
Mainly it's just noise, I am trying to use my Blackbird in a more desktop-like fashion but having to wait a full minute while the fan is running at full speed each time the computer boots is not a very pleasant experience.

Since the firmware is open source I think it would be possible to change the behavior... hopefully change the initial fan speed to something like 70% which is much more acceptable but I am not sure which part of the code is relevant. I searched for the term 'fan' on pnor source tree but I couldn't find something that looked like the boot sequence.

DKnoto

  • Jr. Member
  • **
  • Posts: 75
  • Karma: +13/-0
    • View Profile
Re: Reduce fan speed during boot
« Reply #3 on: June 24, 2023, 03:12:39 am »
I used to be annoyed by the launch noise, too. I solved it in the simplest possible way. I don't turn off my Talos II. Now the machine hums at full load and on reboot after a kernel update.
Desktop: Talos II T2P9S01 REV 1.01 | IBM Power 9/18c DD2.3, 02CY646 | AMD Radeon Pro WX7100 | 64GB RAM | SSD 1TB

manatails

  • Newbie
  • *
  • Posts: 15
  • Karma: +0/-0
    • View Profile
Re: Reduce fan speed during boot
« Reply #4 on: June 24, 2023, 08:22:02 am »
I can see that there are alternative workarounds, but I'm wondering if we can make the most out of the open source nature of our systems.

MPC7500

  • Hero Member
  • *****
  • Posts: 573
  • Karma: +40/-1
    • View Profile
    • Twitter
Re: Reduce fan speed during boot
« Reply #5 on: June 25, 2023, 04:58:56 pm »
When you use bangBMC instead of OpenBMC the boot times are approx. 30 seconds.

tle

  • Sr. Member
  • ****
  • Posts: 426
  • Karma: +47/-0
    • View Profile
    • Trung's Personal Website
Re: Reduce fan speed during boot
« Reply #6 on: July 24, 2023, 09:04:22 am »
It's been awhile since I heard someone mention "bangBMC".

From what I could see there has been activity in https://gitlab.raptorengineering.com/bangbmc-firmware/br-bangbmc. I am too curious whether this initiative has picked up traction and if it is worthy enough to replace OpenBMC
Faithful Linux enthusiast

My Raptor Blackbird

MPC7500

  • Hero Member
  • *****
  • Posts: 573
  • Karma: +40/-1
    • View Profile
    • Twitter
Re: Reduce fan speed during boot
« Reply #7 on: July 24, 2023, 05:17:56 pm »
It has some benefits.

dormito has developed bangBMC (!BMC).
Here is the original source:
https://git.anastas.io/dormito/br-blackbird-external

You can find dormito on Talos IRC.

tle

  • Sr. Member
  • ****
  • Posts: 426
  • Karma: +47/-0
    • View Profile
    • Trung's Personal Website
Re: Reduce fan speed during boot
« Reply #8 on: July 24, 2023, 05:33:45 pm »
Probably it makes more senses to use it in conjunction with Artic Term Kit board.

I just wish the board is more affordable.
Faithful Linux enthusiast

My Raptor Blackbird