Update to NoMachine audio not working on Mojave

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  • #38304
    mtosti63
    Participant

    This is an update to the topic “NoMachine audio not working on Mojave” from Jan 17,2022″

    NoMachine audio not working on Mojave

    I cannot update the post as its closed.

    I have an update to this problem.

    Upon a reboot, the NoMachine driver is not loaded.

    mediamac01:~ root# kextstat |grep nx

    I can load it manually

    mediamac01:~ root# kextload -vvvv /System/Library/Extensions/nxaudio.kext
    Requesting load of /System/Library/Extensions/nxaudio.kext.
    /System/Library/Extensions/nxaudio.kext loaded successfully (or already loaded).

    mediamac01:~ root# kextstat |grep nx
    175 0 0xffffff7f84a41000 0x5000 0x5000 com.nomachine.driver.nxau (4.1.b2) 78172556-B6A4-3112-BA41-E79D18108476 <101 6 5 3 1>

    This error is in the system log (not sure if this error was before or after the kextload)

    mediamac01:~ root# grep nx /var/log/system.log
    Apr 12 10:50:15 mediamac01 nxnode.bin[727]: BUG in libdispatch client: mach_recv, monitored resource vanished before the source cancel handler was invoked { 0x7f9bd46c8c80[source], ident: 201731 / 0x31403, handler: 0x7fff5733dca7 }

    Still no audio, but controls are now present in the UI. If i restart the server, the audio now works.

    mediamac01:~ root# /etc/NX/nxserver --restart

    #38311
    kubaszym1
    Participant

    Hi,

    It’s hard to say what happened at first glance, so I would need a crash report. In the Console app you should find some crash reports or diagnostic reports. Also, I would like to know if it happens before or after kextload, so it would be nice if you reproduced the issue.

    Please send all the log files as attachments.

    #38324
    mtosti63
    Participant

    This was in the system log on a fresh reboot – no audio kext

    kextload -vvvv /System/Library/Extensions/nxaudio.kext

    Apr 13 14:10:28 mediamac01 nxnode.bin[325]: BUG in libdispatch client: mach_recv, monitored resource vanished before the source cancel handler was invoked { 0x7fe1d4ece420[source], ident: 151043 / 0x24e03, handler: 0x7fff618fdca7 }

    no NoMachine driver under the speaker dropdown.

    /etc/NX/nxserver --restart

    Apr 13 14:17:41 mediamac01 nxnode.bin[789]: BUG in libdispatch client: mach_recv, monitored resource vanished before the source cancel handler was invoked { 0x7fee23c6c190[source], ident: 208391 / 0x32e07, handler: 0x7fff618fdca7 }

    Now there is a NoMachine item in the speaker dropdown and audio plays

    There was no crash report.

    I did find these 2 items in the system reports =========================== (attached as one file)

    #38359
    kubaszym1
    Participant

    Hi,

    Kernel extensions should be loaded automatically by the OS. I’m still not sure whether your issue is caused by the OS or by NoMachine.

    You can make sure that SIP is disabled by running:

    csrutil status

    Moreover, I would like to see some logs. Please set the log level to ‘9 – Debug’ and restart NoMachine server, then reboot your computer and load nxaudio.kext manually.

    I would like to see .nx/nxserver.log, .nx/nxerror.log, and you can also send me this folder: /Library/Application Support/NoMachine/var/log

    Send everything to forum[at]nomachine[dot]com, with the topic as reference in the subject field.

    #38363
    mtosti63
    Participant

    Logs have been emailed.  Thank you for your help

     

    I did the following:

    stopped the server

    set sessionlog and websession log to 9

    started the server

    rebooted

    kextload the driver

    restarted the server via command line twice

    I noticed the NoMachine device was not in the volume dropdown, but the driver was loaded.

    Thanks

    Mike

    #38369
    kubaszym1
    Participant

    Hi,

    Here’s what you can try:

    This command should show you the reason of the issue (run it after reboot):

    sudo kextutil -nt /System/Library/Extensions/nxaudio.kext

    The command below may help you to solve it:

    sudo kextcache -prelinked-kernel /System/Library/PrelinkedKernels/prelinkedkernel /System/Library/Extensions/nxaudio.kext

    To make sure whether .kext is added to the prelinked kernel:

    strings /System/Library/PrelinkedKernels/prelinkedkernel | grep nxau

    Please check if something is different after a reboot. If ‘sudo kextcache …’ doesn’t help, please send me the output of ‘sudo kextutil -nt /System/Library/Extensions/nxaudio.kext’

Viewing 6 posts - 1 through 6 (of 6 total)

Closed because the user did not provide further feedback. Please notify us if you confirm that it is resolved or open a new topic if you have the same problem.