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I upgrade only two host. My Linux client machine and the two remote machine. All the NoMachine 6.X host adn clients works audio and 8.X host and client also works audio perfectly. When I try to connect with nomachine 9 to any other no matter if are older or newer there is no sound
log (always same on any connection)
Info: Slave server running with pid 3184541.
Info: Listening to slave connections on port 25001.
Info: Starting NoMachine Monitor version ‘9.0.188’.
Info: Loaded translation files for ‘English’.
3184534 3184534 2025-06-14 12:28:34 989.085 OsDetect: Setting os type to ‘Debian’.
3184534 3184534 2025-06-14 12:28:34 989.106 Main: Creating a new connection monitor.
3184534 3184616 2025-06-14 12:28:35 160.141 AudioIoPulseaudioServer: WARNING! Cannot connect to PulseAudio server.
3184534 3184616 2025-06-14 12:28:35 160.169 AudioIoPulseaudioServer: Failed to get devices list.
3184534 3184534 2025-06-14 12:28:35 538.142 MonitorService: Enabled drag and drop feature.My os client is Debian 12, but i also try on Arch linux agains Debian 9 client and seems not work:
REMOTE DEVICE Arch 2025
NoMachine 9.0.188
Arch 2025
Pulseaudio workiing and nomachine reports sound[general@arshit Devel]$ pacmd list-sinks | grep NoMachine
<span style=”white-space: normal;”> device.description = “NoMachine Output”
</span>[general@arshit Devel]$CLIENT connected Debian 10
NoMachine 9.0.188
Info: Starting NoMachine version 9.0.188.
Info: Loading settings from ‘/home/general/.nx/config/player.cfg’.
Info: Loaded translation files for ‘English’.
3273719 3273719 2025-06-14 12:40:49 190.432 Main: Creating the client session.
3273719 3273719 2025-06-14 12:40:49 190.488 ClientSession: Initializing session at 0x20216fe0.
3273719 3273719 2025-06-14 12:40:49 296.253 AudioIoPulseaudioServer: WARNING! Cannot connect to PulseAudio server.
3273719 3273719 2025-06-14 12:40:49 296.280 AudioIoPulseaudioServer: Failed to get devices list.
3273719 3273719 2025-06-14 12:40:49 296.438 AudioIoPulseaudioServer: WARNING! Cannot connect to PulseAudio server.
3273719 3273719 2025-06-14 12:40:49 296.449 AudioIoPulseaudioServer: Failed to get devices list.
3273719 3273719 2025-06-14 12:40:49 296.451 AudioProxyCore: WARNING! Audio engine reported empty list.
3273719 3273719 2025-06-14 12:40:49 296.453 ClientAudio: WARNING! Could not query device settings.
3273719 3273719 2025-06-14 12:40:49 296.479 ClientAudio: WARNING! There are no audio devices available.
3273719 3273719 2025-06-14 12:40:49 296.486 ClientAudio: WARNING! There are no audio devices available.
3273719 3273719 2025-06-14 12:40:49 296.546 ClientSession: Initialized session at 0x20216fe0.
3273719 3273719 2025-06-14 12:40:49 298.861 ClientSession: Starting session at 0x20216fe0You should noted the line “AudioIoPulseaudioServer: Failed to get devices list.” is clear into your code its not to difficult to guess that in such case just report empty list so inside client the available devices will be “none”
I downgrade to 8.16 and client start to works. I already saved in each update for each OS in those cases. We have 3 weeks of several reports of fails in NoMachine 9
I hope this problem get solved cos NoMachine is more light and easy to use and provides several features now in v9. And the most important! NoMachine supports a wide variation of OS including older ones! Good one!
Hi.
To help us diagnose this, please send us the detailed server-side and player-side logs from your case.
It should help us find what could be wrongly set by the application on your machine.You can find detailed instructions on how to gather them here: https://kb.nomachine.com/DT08U00298. In the UI please set the level to 9.
Please send them to forum[at]nomachine[dot]com, making sure to reference the topic as the subject of the email.
Regards,
JakubThere is no sense in your petition but I send both attached in this message.. both installed nomachine 9.0.188 client side has log level to 9.. server side makes no sense cos already sens the audio as must be cos i tested client side nomachine 6, 7, inclusive (with server side using 9.X ) and sound is working perfectly
No matter if you raise the level to 9 debug, the only log i found in session part of Client is:
Info: Slave server running with pid 1097.
Info: Listening to slave connections on port 25001.
Info: Starting NoMachine Monitor version ‘9.0.188’.
Info: Loaded translation files for ‘English’.
1089 1089 2025-07-21 14:20:42 630.524 OsDetect: Setting os type to ‘Debian’.
1089 1089 2025-07-21 14:20:42 630.548 Main: Creating a new connection monitor.
1089 1127 2025-07-21 14:20:42 754.355 AudioIoPulseaudioServer: WARNING! Cannot connect to PulseAudio server.
1089 1127 2025-07-21 14:20:42 754.378 AudioIoPulseaudioServer: Failed to get devices list.
1089 1089 2025-07-21 14:20:43 248.538 MonitorService: Enabled drag and drop feature.Same problems, two of my linux servers were updated to NoMachine version 9 in last day, all lost audio.
The others with version 8.16 still work normally.
All of them are Ubuntu 22.04 and Ubuntu 24.04, and use pulseaudio.
How are you all downgrading to 8.16? I’m having the same problem with NoMachine 9 but I don’t have a saved copy of the 8.16 installer.
I used VenenuX repositories.. nomachine have several faults by dont store a older copy of the previus inmediate release.. if there is a problem (like now .. that seems its ignored by upstream) we can just downgrade. I never liked upgrading tendency.
Hi, please note that we always recommend downloading packages from our website because we are not responsible for packages that users download from external repositories. Our download section always provides the most recent version for reasons explained in the article here: https://kb.nomachine.com/AR08C00250.
Our developers are currently working on a fix, the release of which should be in the next maintenance. We can of course provide an earlier version which is not affected until then. Please reach out to us through the website with your request and we will provide you with a private link to download.
Thanks @Britgirl. I’ve read the article explaining the reasoning for not keeping all older versions online. A better compromise might be to offer the 2 most recent builds on the website for download.
If you ship a bug, and people auto-update and can’t roll back, it’s unfair to ask them to wait for a support ticket to resolve, IMHO.
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