Author Topic: BMC Fails to Boot  (Read 66 times)

dr.chinme

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BMC Fails to Boot
« on: January 12, 2025, 09:15:20 pm »
The BMC of by Blackbird has gotten stuck during its boot process a couple of times lately, and I'm hoping that folks here can suggest ways to get more information about what's causing the problem.

The first time it got stuck, I disconnected power from the PSU for about a minute and, after reconnecting power, the BMC booted normally. The second time it got stuck, however, I disconnected power overnight, but it still wouldn't boot the next day—the Status LEDs just kept looping a green-blue-green–green-blue-green pattern. I left it powered off for five days, and then it finally booted.

I cannot connect to the BMC via SSH or HTTP/S when it gets stuck like this, so that means I'll have to connect to the Blackbird's internal COM2 header, but I'd have to get the correct cable.

According to the Talos II wiki, it requires an DTK/Intel cable. Does the Blackbird require this kind of cable as well? It probably does, but I'd like to check.

Are there any other troubleshooting steps that I can try?

ClassicHasClass

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Re: BMC Fails to Boot
« Reply #1 on: January 12, 2025, 11:42:53 pm »
Yes, it should be the same. See https://www.talospace.com/2020/04/what-to-do-when-bmc-wont-talk-to-you.html for some notes on using it over serial.

MPC7500

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Re: BMC Fails to Boot
« Reply #2 on: Today at 05:39:38 am »
You could also check the PSU.
Surprisingly, the PSU was often the cause of such problems.

Edit: Here is also a checklist.
« Last Edit: Today at 05:44:23 am by MPC7500 »