While doing a print last night I had a strange Smoothieboard lock up. I have a Cartesian Printer with an LCD connected via the interface card and LCD provided by Uberclock. Using latest edge firmware from 19ish days ago.
- Connected the printer to my Linux (Ubuntu 14.2) via web interface (Firefox) browser.
- Mounted the SD card via Plan9 interface
- Copied file to card.
- Started print via Firefox
- Watched first few layers to verify start was good
- Started browsing stuff with another tab in Firefox.
- Laptop decided it was tired and crashed.
- Rebooted laptop
- Relaunched Firefox
- All previous tabs were still present.
- Selected Smoothie Web tab.
- Print stopped, heater stopped, all the board leds were solid, LCD stopped responding.
I did not remount Plan9 over Ethernet after the laptop rebooted and never had USB cable installed at all during the entire process.
Thoughts and thanks
Imported from wikidot
Hey.
Yeah, I think this specific case would be considered “asking a lot” of your smoothieboard.
Better not mount plan9 if not absolutely necessary ( it’s very new code ), and if your computer crashes again, wait until the print is finished before connecting again.
Cheers.
I agree plan9 stuff is new, but when I rebooted I did not re mount the plan9 drive. I have been mounting manually and not automatically on startup. I did not unmounts before the crash
I only reattached to the board with the web interface.
Thanks
Had a similar problem here today 
I was 12hr into a 15hr print.
I was printing from SD card and my laptop was in sleep mode.
I didnt realise at the time but the laptop was still connected to the SB via USB
I woke the laptop up and the print instantly stopped. Nothing from the LCD or no connection to the SB from the laptop.
There was nothing i could do but power off the SB and restart it. 12 hrs printing lost 
war