Meshcentral: MeshCommander display black screen or incomplete via SOL reset to BIOS in UTF-8 Terminal

[JoshuaSYChang]

Hi Yilan,

I check the Meshcommander v0.7.9 tool can duplicate the black screen or incomplete screen when target system reset to BIOS via SOL in UTF-8 Terminal. I check Putty console and Meshcommander v0.7.4 are works, could you help to check this issue?

Best regards,
Joshua

[Ylianst]

Can you send screen shot or picture of the problem? One more thing you can do it do "Start Capture" in MeshCommander terminal, make the problem happen, stop the capture and send the file. I should be able to replay the data in the terminal and fix any issues.

[JoshuaSYChang]

Hi Ylian,

Please refer the log and the screenshot for UTF-8 during issue is reproduced in SOL. Once issue is reproduced, the console will not update screen any more until the codec is changed to ASCII.

TerminalCapture--2019-10-28-20-08.txt

Best regards,
Joshua

[JoshuaSYChang]

For isolation, the putty is worked and MeshCommander display garbled screen in ASCII.

[JoshuaSYChang]

Hi,

Is there any finding for this issue?

Best regards,
Joshua

[Ylianst]

No findings now, sorry. I am traveling until November 13th and again November 18 to 22. I will take a look at this when I get back.

[JoshuaSYChang]

As v0.7.4 is pass, could you help to provide the previous version from v0.7.5 to v0.7.9? I may do a isolation to check this issue is present from which version.

[JoshuaSYChang]

I find the one v0.7.8 installer, but it is still fail to display in UTF-8. Could you share 0.7.5, 0.7.6 and 0.7.7 for isolation this issue?

[MailYouLater]

Can you check with the NPM versions?
If so, then (assuming you have Node installed) you can use the command npm install meshcommander@<version> where <version> is one of the versions listed at https://www.npmjs.com/package/meshcommander?activeTab=versions (or by npm show meshcommander versions). For instance npm install [email protected].

[JoshuaSYChang]

@MailYouLater Thanks for the information, I have check out the NPM version based on your advice. I try to run MeshCommander node meshcommander but there is no any GUI window to test. If I'm doing the wrong way to run the meshcommander, please correct me.

[JoshuaSYChang]

@MailYouLater I can get work after open the web browser with http://127.0.0.1:3000. :) Please ignore my previous comment.

[JoshuaSYChang]

@Ylianst , I check the issue can be reproduced since the version NPM v0.7.9-a and v0.7.8-b is work. May be there is a change cause this issue in UTF-8.

[MailYouLater]

Here's the downloads for each, and a link to the difference between the two versions.
meshcommander-0.7.8-b.tgz
meshcommander-0.7.9-a.tgz

Edit: This post was too long with the diff embedded in it, moved to pastebin: https://pastebin.com/B8cf2khZ

[Ylianst]

Just posted a new version of MeshCommander v0.8.0 with improved terminal capture and added terminal capture replay support. For the Windows version, since I did not change the version number, you need to uninstall/download/install again. I also published MeshCommander v0.8.0-b on NPM. The MeshCommander icon was also updated (See #554).

On the Windows MSI version it's in the "terminal" menu. In the NPM version it is still the buttons on the terminal bar. If you hold "Shift" and hit "Start Capture", it will bring up the capture replay dialog.

I am hoping this new version will make it easier to capture a file that shows the problem so I can fix it. The capture file above just stops in the middle of the screen.

[JoshuaSYChang]

The trace log is based on v0.8.0-b on NPM.
TerminalCapture--2019-11-28-10-54.txt

The trace log is based on v0.7.8-b on NPM.
TerminalCapture--2019-11-28-11-02.txt

I try to use v0.8.0-b to replay the log capturing from v0.7.8-b, and the terminal stop in the beginning of the third low under UTF-8.

[Ylianst]

Oh! I see. Both these captures are very interesting. I should be able to fix the problem. Thank you. I will try to fix this tomorrow.

[Ylianst]

Just published MeshCommander v0.8.0-c on NPM and updated the MeshCommander MSI that is still v0.8.0 (you will need to uninstall, download, reinstall). The new version updates how UTF8 decoding is done, it was completely broken in all previous versions and could cause intermittent corruptions. Let me know if the new version works for you.

[JoshuaSYChang]

Thanks @Ylianst , issue is fixed on v0.8.0-c.