Fedora 23 GNOME and NoMachine

[tronik]

Connecting to a Fedora 23 machine running Gnome 3 is yielding strange results on the client display.

Connecting works but when you’re using the client the visible screen changes back and forth between the actual screen you would see and a blank desktop. I suspect this has something to do with some other session or GDM (although I switched to lightdm to try to resolve after reading about some Wayland issues and it still occurs).

The other session is immutable, so its just a very annoying stutter visually. This occurs about once a second during screen updates.

If you have the other system beside you so you can use the physical display this is not a problem, but it becomes a problem when you want to use a system that is elsewhere or use the system with the display off.

This occurs when connecting to physical display.

Currently exhibited over LAN (but also occurs remotely)

Clients (Fedora 23, Windows 10) Free Version, 5.1.24-1.x86_64, 5.1.24

Server (Fedora 23) Free Version, 5.1.24-1.x86_64, Gnome 3.18 tried with both GDM and lightdm

Does not occur with XFCE.

This also occurred on the last two previous versions of NoMachine.

More of a major annoyance, but client wise functionally everything seems to be working properly except display. (Sound, file transfers) – but remote display is almost useless.

 

Thanks,

tronik

 

[kroy]

We weren’t able to reproduce problem. Can you write here what is your graphic cards model and video drivers?

[tronik]

Sure Kroy,

Also – here is a short (54 second) video of the problems that are being experienced. (goo dot gl slash k0XgOs) goo.gl/k0XgOs

The video card an nvidia geforce 940m but its using Intel® HD Graphics 520 (Skylake GT2) – don’t have the nvidia drivers installed.

I believe it has something to do with Wayland/X, as sometimes I can kill a process (at the moment its escaping me which process i kill) and then it operates normally. I did switch from gdm to lightdm to try to remedy that as some people mentioned that but…

I’m happy to provide any other information as well.

[tronik]

Attached nxnode1.txt – its pstree output for nxnode.bin

Visually: It looks like there’s several ‘ghosted’ nxnode screens on one. The mouse and keyboard are independent of them but when i actually doinput it seems to flash/switch to a random nxnode screen.

Process wise: Well, as you can see for yourself there are a lot.

I’ve had brief success picking a process and killing it in the past, causing this NX to work normally.

Attachments:

1. nxnode1.txt

[kroy]

Please run debug on that machine, restart nxserver (sudo /etc/NX/nxserver --restart), reproduce problem and send all logs from server side to forum[at]nomachine[dot]com or attach them here (size is restricted). Instructions about debug and collecting logs you can find there: https://www.nomachine.com/DT04M00076.

[tronik]

OK – Thanks. I will do that kroy.

I will also mention, that as of the latest updates to Fedora (gnome/et al.) if this occurs and I hit Alt-F2 and reload gnome with ‘r’ the problem goes away.

 

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