RE: Prusa MK4 missing lines randomly
Are you actually able to print from Connect via Wi-Fi with that build? My understanding was that Connect was broken on Wi-Fi with alpha 1.
RE: Prusa MK4 missing lines randomly
Yes, its working very nice over Prusaconnect with 6.2.0 Alpha 1, using upload and print with Prusaslicer. I printed a few more benchys, and they all came out perfect. Im not sure what fix in the Firmware that did the trick, but it works.
RE:
Okay, well, I updated my XL to 6.2.0 alpha 1 and it will not connect to Prusa Connect at all. The status on the LCD says "refused".
One note: the Wi-Fi showed as non-functioning after the software update, until I reset the printer. Then the network came up and it has an IP address, but Prusa Connect is refusing connections. I changed the connection to Ethernet, which requires leaving a door open into my garage and running a 50' Ethernet cable, and the printer connects just fine.
So, if you're relying on Wi-Fi for your printers, I would definitely advise against 6.2.0 alpha 1 for now.
RE: Prusa MK4 missing lines randomly
I've been using my XL for the past week with the 6.2 alpha 1 firmware. As noted above, this release breaks Wi-Fi, so I've been using Ethernet, but I have not seen the missing perimeter issue during this time.
Now Prusa has released 6.2 alpha 2, which fixes the Wi-Fi breakage. But it seems that all they've done for that fix is to revert the prior change, so I fear that it will reintroduce the missing perimeter bug.
RE: Prusa MK4 missing lines randomly
My MK4 has had no issues with the WiFi, and printing without missing perimeters. Could it be a XL specific issue? Please keep us updated on your experience with 6.2 Alpha 2
RE: Prusa MK4 missing lines randomly
No, I had the issue first on my MK4. The issue seems to be whenever Prusa Connect is used. If I disable Connect, it's fine, but of course I lose the functionality of Connect, which I want.
RE:
I printed some benchys with 6.2.0 Alpha 2 on my MK4, it still works and have no artefacts or missing lines with my printer.
RE: Prusa MK4 missing lines randomly
Hello, the issue is closed on github, but I have skipped line in my print. I switched from prusaConnect to prusaLink, and will see if this issue will repeat. Is there a chance this was not solved after more than a year? Thank you for this thread, I didn't understand what is going on as the printer prints otherwise super clean
RE: Prusa MK4 missing lines randomly
Sorry for the late reply, i think that the problem is resolved. I haven't had any issues with missing lines in my prints since the update.
RE: Prusa MK4 missing lines randomly
I agree. My printers are running latest firmware and I have not seen the problem occur since they were updated.
RE: Prusa MK4 missing lines randomly
I’ve also run into similar intermittent extrusion gaps on my MK4, and in my case it only happened when sending files over WiFi. USB printing has been rock-solid so far. Until Prusa pushes a firmware fix, sticking to USB or PrusaLink seems to be the safest route.
If anyone wants to double-check whether their slicer settings might also contribute to the issue, this Orca Slicer setup & troubleshooting guide is quite helpful: OrcaSlicer Guide. Even if you're using PrusaSlicer, the tuning principles are similar and can help rule out slicer-side extrusion problems.
Hopefully the next firmware update smooths out the WiFi transfer bugs.