On 12/10/18 7:03 PM, Tsukasa Mcp_Reznor wrote:> Has anyone managed to get suspend/resume to work on diskless machines using NFS as the root?
>
> Suspend works like normal, but resume hard locks, can't seem to get any error's or anything as it's not sending to any log files naturally.
>

On 12/13/18 1:08 PM, Tsukasa Mcp_Reznor wrote:
If I manually suspend for up to say 10 seconds, they resume just fine.

Have you checked the power supply?

I don't use a diskless setup but last year (nah, maybe many years ago) I had this strange resume problem after suspend. As in, I'd wake the machine and it'd sit there with a blinking text cursor in text mode, quite stuck. I am pretty sure I posted about it on the list here.

It turned out that when my machine was running the power supply was fine. However, when I suspended it, the 5V rail would bleed voltage. So, I discovered if I resumed within, say, 5 minutes after suspending my machine it would wake normally. After that though, I'd get the blinking cursor and it would hang resuming.

I confirmed that the 5V rail was bleeding voltage when in suspend with my voltmeter. It turned out to be bad capacitors in the power supply.

Just a suggestion...

Dan

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