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Hi Lars,
I don’t expect the virtual session to take more bandwidth, rather the contrary when using a lightweight desktop like Xfce, unless it is a matter of the applications running on it.
Please take the NoMachine statistics from the NoMachine Player menu and attach them here or send to forum[at]nomachine[dot]com. You can find the ‘Take the statistics’ button in the Connection tab of the session menu.
You can use this trick to take “partial” statistics while reproducing the problem:
– click on ‘Take the statistics’ and discard the result (this will reset all counters);
– operate inside the session with the slowness problem;
– click on ‘Take the statistics’ again to get partial stats.
This looks like the same issue reported in https://forums.nomachine.com/topic/lock-the-physical-screen-when-somebody-connects-session-disappears#post-18075. It seems that the bug upstream is still open.
To work around the issue, you can try to unselect ‘Lock the physical screen when somebody connects’.
Hi,
it looks like a crash of the X server. I’d start with checking X server’s logs, typically ‘/var/log/Xorg.0.log.old’, but to be sure you can grab any file starting with “Xorg.” in /var/log. You can attach the files here or send to forum[at]nomachine[dot]com. You may also try to update your system.
Yes, there is no way at the moment, but indeed that could be useful in some specific cases. We will evaluate if this is possible to achieve with used codecs without breaking in any way NoMachine’s sophisticated algorythms, and possibly in a way that is consistent across all codecs. In case, a feature request will be opened.
Thanks for the suggestion.
Hi Will,
I see another process using the graphics card besides the X server:
0 1276 G ...ts/.local/share/Steam/ubuntu12_32/steam 197MiBCould you try to turn Steam off and see if anything change? In the meanwhile we will try to reproduce in our labs with same distro and card.
Hi Lars,
this is strange indeed. Xfce is a lightweight desktop that is known to work perfectly with NoMachine. Do you confirm that CPU usage is low not only for NoMachine processes but also for other system processes? And can you confirm that Xfce desktop is the one running also in the virtual session? (note: it wouldn’t be chosen normally by default)
Did you check the CPU usage also on client side?
Please tell us more about the distribution in use, so we can check it in our labs.
And last, what is your graphics card? Did you install proprietary drivers?
Also, I see that you have ‘Disable multi-pass display encoding’ checked. Can you try to uncheck it and see if you still reproduce the problem?
Hi Will,
it looks like a problem with video drivers. I would try to install latest from nVidia. But before that, please tell what is the Xorg version and more info about installed drivers:
# lspci
# nvidia-smi
# lshw -C display
Hi.
When the highest Display quality is set for the session, NoMachine is already cofigured to target the best quality possible.
Changing encoder presets would not affect quality, but only the ratio between encoding time (CPU usage, but also responsiveness) and video frames size (bitrate).Hi @danny,
good to hear 🙂
Hi @saips,
it’s not all clear to me yet: you make a fresh system installation, then upgrade it and get the issue? Everything on the same machine? And what is the Xorg version in the fresh installation?
Also I see that you have an external keyboard and mouse. Can you check if you still reproduce the issue after unplugging them?
Hi,
indeed screen resolution will affect both CPU usage (but we already concluded that CPU is not an issue for you) and network bandwidth usage. What you say seems to confirm further that network should be the culprit here.
Can you show the output of ‘xinput’ command?
And please tell your Xorg version. Did you upgraded it recently?
This looks like a different issue, and it is apparently a known bug in the modesetting driver:
https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=1487954
Hi,
when connecting to the physical display, available resolutions are only the ones provided by the graphics card, the same you can see with xrandr. Very likely you are connecting to a virtual session with VNC. NoMachine supports virtual desktop sessions in the NoMachine Workstation product. You can download the evaluation version if you want to check it.