# SV 08 freezes **URL:** \ **Category:** Sovol SV08\ **Created:** [March 4, 2025, 9:20pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108 "2025-03-04T21:20:36Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![FrancescoBrigoli](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/francescobrigoli/32/2897_2.png) [@FrancescoBrigoli](https://forum.sovol3d.com/u/FrancescoBrigoli)\ **Post date:** [March 4, 2025, 9:20pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/1 "2025-03-04T21:20:36Z")
Hello everyone, has anyone had this problem? I leave the printer on without doing anything and I find it blocked. ---
**Author:** ![mistral](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/mistral/32/2118_2.png) [@mistral](https://forum.sovol3d.com/u/mistral)\ **Post date:** [March 4, 2025, 10:19pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/2 "2025-03-04T22:19:57Z")
This story lacks a bit of adventure šŸ˜‰ I donā€™t think itā€™s particularly unexpected, nor worrying. The machine is not really made to stay on without action. There are a lot of continuous measurements that can generate a saturation of the temporary memory or something like that. In addition, there is a well-known bug of electromagnetic disturbance between the tool head and the main motherboard (random and corrected with a piece of ferrite, this issue can happen during printing especialy when the printer doing lot of things but that is random, soā€¦). ---
**Author:** ![FrancescoBrigoli](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/francescobrigoli/32/2897_2.png) [@FrancescoBrigoli](https://forum.sovol3d.com/u/FrancescoBrigoli)\ **Post date:** [March 4, 2025, 10:53pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/3 "2025-03-04T22:53:42Z")
Regarding electromagnetic interference, I donā€™t have an enclosure but I still added the ferrite ring on the extruder group cables. ---
**Author:** ![tingo](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/tingo/32/1731_2.png) [@tingo](https://forum.sovol3d.com/u/tingo)\ **Post date:** [March 5, 2025, 5:33pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/4 "2025-03-05T17:33:59Z")
For how long? A few minutes? Half an hour? A few hours? Days? FWIW, my Sovol SV07+ stays on (powered on) the whole time. When want to use it, I preheat for the filament Iā€™m using, load filament and then I send the file to print from PrusaSlicer. It has been up for a while now ```auto mks@mkspi:~$ uptime 18:22:58 up 355 days, 20:59, 1 user, load average: 0.23, 0.17, 0.17 ``` ---
**Author:** ![mich0111](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/mich0111/32/1176_2.png) [@mich0111](https://forum.sovol3d.com/u/mich0111)\ **Post date:** [March 5, 2025, 5:44pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/5 "2025-03-05T17:44:17Z")
> [@tingo](#): > > my Sovol SV07+ stays on (powered on) the whole time. And what about the ecological transition?šŸ˜‚ ---
**Author:** ![FrancescoBrigoli](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/francescobrigoli/32/2897_2.png) [@FrancescoBrigoli](https://forum.sovol3d.com/u/FrancescoBrigoli)\ **Post date:** [March 5, 2025, 8:32pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/6 "2025-03-05T20:32:12Z")
Sometimes hours and sometimes days ---
**Author:** ![mistral](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/mistral/32/2118_2.png) [@mistral](https://forum.sovol3d.com/u/mistral)\ **Post date:** [March 6, 2025, 8:24am UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/7 "2025-03-06T08:24:10Z")
Try to connect with SSH during the printer is blocked. You may provide more information : - Who are the running process (`sudo ps aux`) - What is in the logs ? (last logs in ~/printer\_data/logs/\*.log ) - `ls /dev/serial/by-id/` (you should find at least two device for the both mainboards) If you are confortable with the command line, maybe you can restart just the processes to see if something is related to the heat, blocked devices, etc. And if you cannot connect by SSH when the printer is blocked, that is an issue with the OS so you can investigate after the restart onto /var/log/ ---
**Author:** ![mich0111](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/mich0111/32/1176_2.png) [@mich0111](https://forum.sovol3d.com/u/mich0111)\ **Post date:** [March 6, 2025, 8:29am UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/8 "2025-03-06T08:29:18Z")
For ssh, the credentials are sovol sovol ---
**Author:** ![FrancescoBrigoli](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/francescobrigoli/32/2897_2.png) [@FrancescoBrigoli](https://forum.sovol3d.com/u/FrancescoBrigoli)\ **Post date:** [March 6, 2025, 9:35am UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/9 "2025-03-06T09:35:31Z")
Thank you for the valuable information. I donā€™t have any in-depth knowledge in Unix Linux environments, but thanks to the advice, Iā€™ll make it. Iā€™ll try to analyze the problem and update you as soon as I have the information. Thanks again! ---
**Author:** ![ForKicks](https://avatars.discourse-cdn.com/v4/letter/f/b9e5f3/32.png) [@ForKicks](https://forum.sovol3d.com/u/ForKicks)\ **Post date:** [March 6, 2025, 10:13am UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/10 "2025-03-06T10:13:06Z")
To be fair, the software should not lock up. Not in hours, days, weeks or months. I have had nix systems that has been running for several 100 days without a hitch, only restarting when required. If it hangs in hours, days, the risk of failure on print is too high imo. So if you are having problems with instability, do as suggested and debug with ssh. You could also look into if it is possible to enable ā€œDebug Modeā€ for more verbose log outputs. If you havent and are up for it, I would recommend updating the firmware and resetting everything to defaults. I would check logs, temperatures, and look into smartmontools to verify the EMMC is healthy. ---
**Author:** ![FrancescoBrigoli](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/francescobrigoli/32/2897_2.png) [@FrancescoBrigoli](https://forum.sovol3d.com/u/FrancescoBrigoli)\ **Post date:** [March 6, 2025, 11:39am UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/11 "2025-03-06T11:39:15Z")
Iā€™m going to have the printer since Christmas, so I have little knowledge and Iā€™ve used it very little." I come from a Flsun Q5 that was very differentā€¦ In fact, Iā€™ve sometimes found it stuck in the middle or at the beginning or even at the end of a print." To enable debugging mode and create in-depth logs what steps do I have to take a time connected in ssh? The update of the fw was made to the latest version but still crashes more than the previous version. How could I verify the genuineness and proper state of health of the mcu? Thank you very much. ---
**Author:** ![ForKicks](https://avatars.discourse-cdn.com/v4/letter/f/b9e5f3/32.png) [@ForKicks](https://forum.sovol3d.com/u/ForKicks)\ **Post date:** [March 6, 2025, 12:39pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/12 "2025-03-06T12:39:35Z")
First we should identify what stops working. Are we talking about the printer stopping and not responding, or are we talking system failure aka unresponsive Mainsail? ---
**Author:** ![FrancescoBrigoli](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/francescobrigoli/32/2897_2.png) [@FrancescoBrigoli](https://forum.sovol3d.com/u/FrancescoBrigoli)\ **Post date:** [March 6, 2025, 12:56pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/13 "2025-03-06T12:56:32Z")
We are talking about printer stuck and not responsing. ---
**Author:** ![mistral](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/mistral/32/2118_2.png) [@mistral](https://forum.sovol3d.com/u/mistral)\ **Post date:** [March 7, 2025, 8:25am UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/14 "2025-03-07T08:25:02Z")
You will have to learn (and that is not just a must, that is also a part of the fun šŸ˜‰ ). So, when your printer is blocked, wait and, in this order : - Wrote well the hours with what you ā€œknowā€ : when that works for the last time, when did you performed the stop, what are the printer situation (during a print, head itā€™s hot, bed, screen, ledsā€¦). Before to investigate, analyze the crime scene šŸ”Ž - Try to ping it (even from another OS, you have a command like `ping ip.of.your.sovol` (for sure replace with the right ip address) - =\> if there is no answer, that is not just the software but all the systems who is blocked (that is the most difficult to fix), stop here, stop your printer, i will give you others instructions - =\> If that answer, continue - Connect to the printer througt SSH, there is lot of documentation on internet (even specificly for sv08 but that is exactly the same for any linux systems search ā€œhow to connect with ssh from windows/macā€) - With SSH, run `sudo ls -al /dev/serial/by-id/` and paste here the result - With SSH, run `sudo ps aux`, same - With SSH, run `tail -n100 ~/printer_data/logs/*.log` =\> same (+ i do not trust that can provide any confidential informations but for sure read it before sharing to be sure) With that, that can provide more informations to help. For sure, if you can try when your printer works, that could be help you to rerun the process after that the printer is blocked more easily. In addition (even if ssh connexion does not works) you can download the full content of the printer logs, that could help too but that is very verbose (do not paste them here for now). You can do it immediatly after the restart directly from the web ui (Machine \> Config Files \> select Root: logs / Then download all). Keep the files but share with us just a screen of this page for now. ---
**Author:** ![FrancescoBrigoli](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/francescobrigoli/32/2897_2.png) [@FrancescoBrigoli](https://forum.sovol3d.com/u/FrancescoBrigoli)\ **Post date:** [March 7, 2025, 8:53am UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/15 "2025-03-07T08:53:39Z")
Well, itā€™s been power on for 48 hours without freezing. Thanks for the info. Iā€™ll let you know. ---
**Author:** ![FrancescoBrigoli](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/francescobrigoli/32/2897_2.png) [@FrancescoBrigoli](https://forum.sovol3d.com/u/FrancescoBrigoli)\ **Post date:** [March 10, 2025, 9:30pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/16 "2025-03-10T21:30:36Z")
Ok it crashed after 6 days. No response via ssh. Even the original small display is blocked. I attach screenshots of the log files after reboot. ![Screenshot 2025-03-10 222443](https://canada1.discourse-cdn.com/flex030/uploads/sovolforum/original/2X/f/f853c773ec4a4023b7a14ebb91a61450ee8bf7a4.png) ---
**Author:** ![FrancescoBrigoli](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/francescobrigoli/32/2897_2.png) [@FrancescoBrigoli](https://forum.sovol3d.com/u/FrancescoBrigoli)\ **Post date:** [March 10, 2025, 9:38pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/17 "2025-03-10T21:38:29Z")
![Screenshot 2025-03-10 223802](https://canada1.discourse-cdn.com/flex030/uploads/sovolforum/original/2X/e/e9bb2148a2c10d5e7fc4e0a62daf9570178ea794.png) ---
**Author:** ![ForKicks](https://avatars.discourse-cdn.com/v4/letter/f/b9e5f3/32.png) [@ForKicks](https://forum.sovol3d.com/u/ForKicks)\ **Post date:** [March 11, 2025, 6:00pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/18 "2025-03-11T18:00:47Z")
Not easy to do diagnostics on a screenshot of a log file, itā€™s what you have inside that matters. Dose the printer display show any error kode, or is it just locked up? ---
**Author:** ![FrancescoBrigoli](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/francescobrigoli/32/2897_2.png) [@FrancescoBrigoli](https://forum.sovol3d.com/u/FrancescoBrigoli)\ **Post date:** [March 11, 2025, 8:22pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/19 "2025-03-11T20:22:11Z")
Nothing error. Just stuck . ---
**Author:** ![tingo](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/tingo/32/1731_2.png) [@tingo](https://forum.sovol3d.com/u/tingo)\ **Post date:** [March 12, 2025, 6:44pm UTC](https://forum.sovol3d.com/t/sv-08-freezes/7108/20 "2025-03-12T18:44:59Z")
Have you checked that the power to the controller is ok and stable? Are you by any chance connecting to the printer via usb? (wireless connected printers are so common these days, I often forget that we used usb in the old days) [Next page](https://forum.sovol3d.com/t/sv-08-freezes/7108.md?page=2)