# Luban shows totally incorrect remaining time

**URL:** <https://forum.snapmaker.com/t/luban-shows-totally-incorrect-remaining-time/18454>\
**Category:** Snapmaker Luban\
**Created:** [May 6, 2021, 1:20pm UTC](https://forum.snapmaker.com/t/luban-shows-totally-incorrect-remaining-time/18454 "2021-05-06T13:20:45Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![rgprints](https://avatars.discourse-cdn.com/v4/letter/r/ac91a4/32.png) [@rgprints](https://forum.snapmaker.com/u/rgprints)\
**Post date:** [May 6, 2021, 1:20pm UTC](https://forum.snapmaker.com/t/luban-shows-totally-incorrect-remaining-time/18454/1 "2021-05-06T13:20:45Z")

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After installing the latest firmware in my Snapmaker A350 decided to try out using a serial port USB connection rather than WiFi from Luban. For the most part it is working fine, although I also see the repeated "Unknown command: “M1011"” already reported as a bug.

However, I see another bug. The “Remaining Time” estimate is way too large. During the course of printing, the estimate reduces at a rapid rate, asymptotically approaching the true value.

Here are some screenshots after just starting a print job that was estimated at just over 11 hours when the GCode was generated. The first two screenshots are 43 seconds apart but during that time, the estimate reduced by more than 6 hours. The third image is another 13 minutes later and the estimate reduced by approximately 25 hours:

![image](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/2X/3/3346e4f0c23a2a62f7ecb5378ce8d3f04cc158c3.png)

![image](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/2X/d/d9672d7383c3bfe22bba867dc5060af6a1307074.png)

![image](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/2X/5/5878e245aef96d3c798e0543e6fcfe432e98fe69.png)

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**Author:** ![Edwin](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/edwin/32/13481_2.png) [@Edwin](https://forum.snapmaker.com/u/Edwin)\
**Post date:** [May 7, 2021, 3:04am UTC](https://forum.snapmaker.com/t/luban-shows-totally-incorrect-remaining-time/18454/2 "2021-05-07T03:04:42Z")

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Issue received.

I have forwarded this issue to our software team. Will update here.

Sorry for the inconvenience.

Edwin

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**Author:** ![Blockmodule](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/blockmodule/32/11177_2.png) [@Blockmodule](https://forum.snapmaker.com/u/Blockmodule)\
**Post date:** [May 7, 2021, 5:13am UTC](https://forum.snapmaker.com/t/luban-shows-totally-incorrect-remaining-time/18454/3 "2021-05-07T05:13:22Z")

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It’s also posted on GitHub as this similar issue.

Edwin  
Please check the issue posted on GitHub again.  
A lot of people are having trouble with this and Snapmaker needs to address it.

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**Author:** ![Edwin](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/edwin/32/13481_2.png) [@Edwin](https://forum.snapmaker.com/u/Edwin)\
**Post date:** [May 7, 2021, 6:04am UTC](https://forum.snapmaker.com/t/luban-shows-totally-incorrect-remaining-time/18454/4 "2021-05-07T06:04:39Z")

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@Blockmodule Did you mean this issue?

> <https://github.com/Snapmaker/Luban/issues/978>
>
> I installed 3.15.0 - when I connect Luban via USB (Com-port) I get the message "…echo:Unknown command: "M1011" ". It will appear over and over again
> !\[grafik\](https://user-images.githubusercontent.com/79230540/115998488-c705b300-a5e7-11eb-9ee5-a14ced2a1f7b.png)
> 
> It does not appear by connecting via WiFi.

The patch version, Snapmaker Luban 3.15.1 will be released on the forum tomorrow.

Cheers  
Edwin