RE: USB error mid print
Hello all, I have more to report on this. So last night I started a 16 hour print on my 5-tool XL with a brand new Prusa PETG roll. I have seen this issue now with two different Prusa Filament spools (PLA and PETG), where the filament becomes crossed or appears stuck to other filament strands or the spool. I came this morning to find the printer stopped, the filament stuck because it has crossed and would not budge, and the printer reporting the USB drive had unmounted and please re-connect. I unloaded and fixed the filament, but nothing would get he USB port to see a drive until I rebooted (power cycle) the printer. I'll do more testing, but I wanted to let others know. Once I cleaned everything up and did a power cycle, everything was fine and I started the (long) print again.
RE: USB error mid print
I have now the same problem. It started once per long print, but now I have it showing up every 30 minutes or so. I did already try
- different sticks
- power cycle
- adding another in between cable
- Printing petg/pla/.. (long shot)
And a few other things, but the problem seems to get worse. Anyone any other ideas?
RE: USB error mid print
Sorry, no idea. From time to time the filesystem and the partition table of my USB stick get damaged. After creating a new partition table and an FAT32 file system, I can use the stick again. There is still a bug in the firmware regarding the USB system, but I don't know, wether the developers are knowing this, or not.
RE: USB error mid print
I think I have found the solution to these problems:
There are multiple clients from multiple threads which can access the USB stick:
- The printer
- Prusa Link
- Prusa Connect
Each of them have likely some threads reading the drive. As long as it is empty no problems happen, but as it fills, 2. and 3. are starting to be more active on the USB stick. And sometimes they collide with the printer - in which case the printer will not be able to access the data and gives up. Sounds like a bug.
However - workaround: Turn Link and Connect off and/or clear the memory stick.
I was down to a problem every 20 minutes - turned off Link and Connect and now it seems to work. I will test more - I'd guess that Connect is really the problem here - but at least I can print again - and it may also help others! Will update as I find out more!
RE: USB error mid print
I was running 5.1.2 without errors for hundreds of hours and just upgraded to 6.0.0. I have been unable to finish a print since without seeing this error. First one I was able to resume second and third I could not. Have tried a different USB with the same file and it failed on a different layer.
Just emailed support hope they have something useful as my printer is a brick now. Going to try reverting to 5.1.2.
RE: USB error mid print
Yepp, that was what happened to me too. Try to disable Prusa Connect - and then it seems to work (at least for me).
Looks like that they have some kind of blocking read going on and the http server is somehow blocking the printer from access.
Let me know if it fixes it for you! I did contact Prusa already about it and it appears that they know.
RE: USB error mid print
This happened to me too. I reverted back to 5.1.2 for the time being.
I was running 5.1.2 without errors for hundreds of hours and just upgraded to 6.0.0. I have been unable to finish a print since without seeing this error. First one I was able to resume second and third I could not. Have tried a different USB with the same file and it failed on a different layer.
Just emailed support hope they have something useful as my printer is a brick now. Going to try reverting to 5.1.2.
RE: USB error mid print
I reverted to get some prints done but I'll try it later with Prusa Connect off. I haven't received a reply from support yet.
RE: USB error mid print
I have also been having the same issues after upgrading to 6.0.0, thanks for the hint on disabling Prusa Connect.