NoMachine screen update problems under Linux

[headdab]

I have been using NoMachine successfully for a couple months, but recently its unusable and I can’t figure out how to debug.

I move the mouse around and it leaves behind all kinds of screen garbage, making the corresponding regions unreadable.

I searched through the forums based on searches I could think of and didn’t find anything useful.

I’m running the v6.6.8 player on ubuntu 17.10, connected to a v6.6.8 server on ubuntu 16.04.

I’ve completely removed NoMachine on both machines, with dpkg -P and then reinstalled it, but get the same behavior.

On the client/player system it still remembers the connection, so I’m guessing its getting that from somewhere in ~/.nx

I’m currently getting 120 Mbps from my ISP.

[nxlinux]

I have the same problem and it seems to be related to the H.264 codec. Activating all “disable” options (or a subset of them) in the client display settings does not help. After enforcing the VP8 codec by setting

EnableDisplayServerVideoCodec 1

DisplayServerVideoCodec vp8

in /opt/NX/etc/node.cfg the problem is gone. I am using a resolution of 3200×1800.

[fra81]

With the last update, H.264 encoder is now available by default in all NoMachine products, free ones included, so it is not possible to exclude that some new problem could be found when hardware encoding or decoding is in use with specific graphics cards or drivers, since, as you can imagine, it is not possible to test every possible combination of hardware, drivers and configurations in our labs.

Can you confirm you had tried to check the ‘Disable client side hardware decoding’ box?

And could you send us the session logs so we can investigate further? You can gather server side logs as explained in https://www.nomachine.com/AR10K00697 and client side logs as in https://www.nomachine.com/DT10O00163#2. You can send the files to forum[at]nomachine[dot]com.

Also a screenshot showing the issue could be useful.

• This reply was modified 5 years, 8 months ago by fra81.

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