Performance with Rocky Linux Host is extremely slow

[rocky9_nomchine]

here they are

1. With EGLcapture off, but can’t select monitor:
Server logs 2026-02-06 11.11.54_eglcapture_off_cant_select_monitor.zip

2. With EGLcapture on, super slow response.
It is a single zip file split into 3 parts:

Server logs 2026-02-06 11.16.38_eglcapture_on_slow_split.zip
Server logs 2026-02-06 11.16.38_eglcapture_on_slow_split.z01
Server logs 2026-02-06 11.16.38_eglcapture_on_slow_split.z02

Attachments:

1. Server-logs-2026-02-06-11.11.54_eglcapture_off_cant_select_monitor.zip
2. Server-logs-2026-02-06-11.16.38_eglcapture_on_slow_split.zip
3. Server-logs-2026-02-06-11.16.38_eglcapture_on_slow_split.z01.zip
4. Server-logs-2026-02-06-11.16.38_eglcapture_on_slow_split.z02.zip

[Britgirl]

Hi, we’ve sent you a link to a new build. The instructions are the same as before 🙂

1) one set of logs with --eglcapture set to ‘no’ if you are still reproducing the monitor issue. Otherwise, no need for logs.

2) one set of logs with --eglcapture set to ‘yes’ and slowness reproduced.

[rocky9_nomchine]

Sure, here are the logs for eglcapture_off

I would like to mention that, even with eglcapture off, there is still a significant amount of input lags (feels like in 100th of milliseconds, but much better than when eglcapture on, which delay feels like it is is in the seconds)

Attachments:

1. Server-logs-2026-02-12-14.07.02_eglcapture_off_split-1.zip
2. Server-logs-2026-02-12-14.07.02_eglcapture_off_split.z02.zip
3. Server-logs-2026-02-12-14.07.02_eglcapture_off_split.z01.zip

[rocky9_nomchine]

And here’s the log for eglcapture_on

Attachments:

1. Server-logs-2026-02-12-14.01.30_eglcapture_on_slow_split.zip
2. Server-logs-2026-02-12-14.01.30_eglcapture_on_slow_split.z01.zip

[Britgirl]

You attached the logs for the monitor issue with –eglcapture set to off which means the potential fix for the monitor issue didn’t help, right?

About the logs with –eglcapture enabled, from the logs we see it’s still loading the old library. So do a system reboot and grab new logs, please. Thanks once again.

[rocky9_nomchine]

Sorry about that, let me try capturing it again, here it is in the attached (eglcapture set to on and slow response time). Also with eglcapture set to off, the monitor is still showing both at the same time.

Attachments:

1. Server-logs-2026-02-13-16.24.03_elgcapture_on_slow.zip

[Britgirl]

Check your inbox. I’m sending you the download link again, it seems that you are still installing the earlier package we sent you? Remember to reboot the machine after installing. After which you can also add this to the node.cfg file on the target machine, DisplayServerExtraOptions "-gpu 1". This is a new key, not yet enabled by default, which we’ve added and it activates HW acceleration for some operations. It would be interesting to know if there is any difference.

[rocky9_nomchine]

That is very strange. I did install the debug-monitor version.
I uninstalled whatever it is installed first w/ sudo dnf remove…
Rebooted, sudo dnf install debug-monitor.rpm,
Rebooted a second time,
logrotate, then took the logs.

$sudo dnf info nomachine
Last metadata expiration check: 0:45:38 ago on Mon 16 Feb 2026 12:23:29 PM PST.
Installed Packages
Name : nomachine
Version : 9.3.7
Release : 1
Architecture : x86_64
Size : 78 M
Source : nomachine-9.3.7-1.src.rpm
Repository : @System
From repo : @commandline
Summary : “Fast and secure remote access system”
URL : http://www.nomachine.com/
License : NoMachine License
Description :
: NoMachine is a fast and secure remote access system and terminal server
: service. It provides a full set of administration tools that make it a complete
: desktop virtualization solution for you or for your organization.
:
: This package includes all programs and libraries necessary to
: transform your machine into a server in the cloud or a remote
: desktop client according to your needs.

[rocky9_nomchine]

Ok, let me know if this one is ok.
Not sure if it makes a difference but I also deleted everything under ~/.nx/ before installing the latest rpm you just sent.

Attachments:

1. Server-logs-2026-02-16-14.25.27.split_.zip
2. Server-logs-2026-02-16-14.25.27.split_.z01.zip

[Britgirl]

Hi, this time it’s the right package 🙂

You attached the logs with --eglcapture set to yes only. Does that mean that when you set the –eglcapture to no, you no longer reproduce the monitor issue?

Logs from the --eglcapture set to yes show that the slowness is caused by the drivers and not nomachine. Please try adding DisplayServerExtraOptions "-gpu 1" in the server’s node.cfg file and tell us if it makes any difference.

[rocky9_nomchine]

yes, I have the “-gpu 1” added to DisplayServerExtraOptions in the node.cfg, no change to performance.

It is an old PC with an AMD card:

[user@Selenium work]$ lspci -k | grep -EA3 'VGA|3D|Display'
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Caicos XT [Radeon HD 7470/8470 / R5 235/310 OEM]
	Subsystem: Dell Radeon HD 7470
	Kernel driver in use: radeon
	Kernel modules: radeon, amdgpu

Well, I guess there is not much you can do, and this is it. Thanks for all your help.

[Britgirl]

Unfortunately, there’s not much more we can debug. Although we would appreciate knowing if the the monitor issue disappeared when you set --eglcapture to no using the last package we provided.

[Author]

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