NoMachine update and Vulkan

[croes]

After an upgrade to NoMachine, I was getting black screens on all Vulkan based games. This was confirmed using the vkcube command as well, just black, no cube.  The upgraded version of NoMachine was 8.19.2, but when I upgraded again to the latest NoMachine 9.2.18, I was getting the same black screen result.

I uninstalled NoMachine, and Vulkan then worked fine, no black screens.  On another computer with the same issue, I was able to reinstall NoMachine directly to the latest version, and Vulkan continued to work fine.

I am using Nobara 42, which is mostly Fedora. KDE.

Tore out a lot of hair trying to find the issue with this one, so maybe someone else will find it helpful.

tldr: There may be an issue with the NoMachine updater that is causing problems with Vulkan.  Uninstall and Reinstall does seem to work.

[Britgirl]

Hi, this is a known issue. Please follow this link to the Trouble Report https://www.nomachine.com/TR11W11619. The workaround is also documented, but I will also paste it here for convenience.

As a temporary solution, disable EGL support in NoMachine by executing in a terminal:

sudo /etc/NX/nxserver --eglcapture no

Then re-login to the Linux host (logout and login to the system) or reboot the Linux machine.

Otherwise execute in a terminal:

sudo /etc/NX/nxserver --eglcapture no && sudo systemctl restart display-manager

[Author]

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