![]() ![]() ![]() The only way to power that stuff back up, though, is to cycle the main power to the board or reset the SOC (or PMIC for later models). ![]() This is what happens when the OS is shutdown properly (eg. Not 100% true, since all models can have the SoC or significant parts thereof powered off, in which case the "power state" of the device could be said to have changed.Also, I have it on a 3.8A hub and the only thing plugged directly into the pi's usb is a "nano"-size wifi dongle. However, I make pretty light use of it too, maybe occasionally there is a big download, etc., but not constant traffic (the more it's accessed the more opportunities there are for something to fail, so I can't say how reliable it would be serving a cafe full of people all day). I use this methodology to ensure the connection stays up peeking at the current log, it's had to reconnect itself only twice in the past 48 hours. I ran sudo nano /boot/config.txt and cannot find where XScreenSaver is initiated. I ran sudo raspi-config and there is no choice to disable/uninstall XScreenSaver and how to sudo apt-get a different one. If it's any consolation, I use the pi headless on a WLAN and don't turn it off very often, and it's been pretty flawless. So now I'm stuck unless some kind teckie-person helps. You'd see lots of evidence that in /var/log/syslog or /var/log/messages. You may want to look at your logs to see if anything else has been going on during the network downtime - eg, (I'm speculating), if you have stuff attached to the usb ports that is near the limits of the pi's 150 mA output, that thing may intermittently fail, and if it's a wifi dongle, the system will then have to wait until the interface reappears. So whatever your problem is, that is not it. However, the "power state" of the hardware is still the same (because it only has one state, on). When you shutdown the system, the software stops, meaning there is now no way to get it to do anything again. There's either power (plugged in), or there isn't (not plugged in). It does not have a sleep or suspend mode. The raspberry pi hardware has no power management capability. ![]()
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