How to allow NX to change display resolution on headless Raspbian?

[anijatsu]

Hi!

I’m running NoMachine free 7.7.4, on both:

Server: Raspberry Pi 4B
Linux 5.10.63-v8+ #1459 SMP PREEMPT Wed Oct 6 16:42:49 BST 2021 aarch64 GNU/Linux

Client: MacBook Pro M1 2020
MacOS Monterey 12.0.1 Darwin 21.1.0 Darwin Kernel Version 21.1.0: Wed Oct 13 17:33:24 PDT 2021; root:xnu-8019.41.5~1/RELEASE_ARM64_T8101 arm64

I’m currently playing around with Raspbian’s /boot/config.txt file to figure out a display resolution that’d fit most of my cases, but I’d really enjoy being able to change it dynamically in NoMachine.
hdmi_force_hotplug allows me to boot into GUI, but without forcing hdmi_mode, I’m stuck at something like 640×480.
I’m open to running beta or bleeding edge. I’m currently on Raspbian 64-bit beta.

lxrandr doesn’t see anything to change away from the resolution chosen by hdmi_mode:

NoMachine doesn’t see a way to change the res:

My config.txt is currently as follows.

disable_overscan=1
hdmi_force_hotplug=1
hdmi_enable_4kp60=1
hdmi_group=1
hdmi_mode=76
# Enable audio (loads snd_bcm2835)
#dtparam=audio=on
# Enable DRM VC4 V3D drive
#dtoverlay=vc4-kms-v3d
max_framebuffers=2
arm_64bit=1
#enable_uart=1
#start_x=0
gpu_mem=128

[Carin]

Hi,

Please take a look at this article: https://knowledgebase.nomachine.com/AR02M00836

[Author]

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