shutdown problem

[cyberry]

I use pi module B and connect it via ssh. As I use command -sudo poweroff-to shutdown my pi, the ssh connection will be cut, but all the led on the board are still on, including ACT and LNK. But my laptop can't find its IP address. Is it normal? Will only the PWR led be on after shutdown? Is my problem possibly caused by some driver program for my sensors as I installed? Thanks for all!

[cpc464]

Hi cyberry. That is normal behaviour. The shutdown command does not actually power off the system entirely, it just stops the operating system.

In this situation, you can safely remove the power from the Pi (pull the plug out). To bring up the Pi again, remove the power then attach it again (pull the plug out, wait a couple of seconds, then put it in again). The Pi should then boot normally.

Jim

[cyberry]

Hi cyberry. That is normal behaviour. The shutdown command does not actually power off the system entirely, it just stops the operating system.

In this situation, you can safely remove the power from the Pi (pull the plug out). To bring up the Pi again, remove the power then attach it again (pull the plug out, wait a couple of seconds, then put it in again). The Pi should then boot normally.

Jim

But the first few times I ran this command and all the LED except PWR turned off, probably I misremember It's there any commands to power off the system entirely? The flashing ACT LED just make me too nervous to pull the plug out.
Thanks, Jim!

[DougieLawson]

The only way to power off completely is to pull the power supply from the wall or pull the microUSB connector from the RPi.

[rpdom]

Hi cyberry. That is normal behaviour. The shutdown command does not actually power off the system entirely, it just stops the operating system.

In this situation, you can safely remove the power from the Pi (pull the plug out). To bring up the Pi again, remove the power then attach it again (pull the plug out, wait a couple of seconds, then put it in again). The Pi should then boot normally.

Jim

Are you sure?

On all my Raspis the network LEDs always go off when I shut them down, and the ACT/OK LED flashes 10 times to signal that shutdown is complete, then goes off.

[cpc464]

I'm sure. The hardware does not contain the technology for a full power off from software.

The command I usually use for shut down is

shurtdown -h 0

(as root). Then wait a bit and pull the plug.

[cyberry]

Hi cyberry. That is normal behaviour. The shutdown command does not actually power off the system entirely, it just stops the operating system.

In this situation, you can safely remove the power from the Pi (pull the plug out). To bring up the Pi again, remove the power then attach it again (pull the plug out, wait a couple of seconds, then put it in again). The Pi should then boot normally.

Jim

Are you sure?

On all my Raspis the network LEDs always go off when I shut them down, and the ACT/OK LED flashes 10 times to signal that shutdown is complete, then goes off.

Just as the first part when reboot it. And this is what I remember.

[rpdom]

I'm sure. The hardware does not contain the technology for a full power off from software.

The command I usually use for shut down is

shurtdown -h 0

(as root). Then wait a bit and pull the plug.

I know the Power LED will stay on as long as power is connected, but the LAN/USB chip is usually shut down on halt and the LAN LEDs will go out.

(I use "halt", which is the same as "shutdown -h now")