qemu amigaos 4.1 sudo without no audio

@white
Quote:
Only if your monitor have multiple inputs or you use a monitor switcher because the two GPUs have their own outputs so you'll need to plug them somewhere to see their picture. You have two machines: your host and the virtual machine that now uses it's own graphics card so you need two monitors to view the output of two machines or any other way you would use to view two machines. That's why it's called a virtual machine, because it's like a real one just lives inside the host machine and not a physical one.

I think the QEMU_AUDIO_* env variables were removed in later QEMU versions and won't work in current version regardless of what ChatGPT told you. To configure audio backend in QEMU now you have to use the -audio option but that's not normally needed. If you haven't set any QEMU_AUDIO variables then they aren't there. You can check with set | grep QEMU and if that returns nothing then it's some other env variable needed by pipewire that needs to be preserved for sudo.

Edit: Here's the commit that removed QEMU_AUDIO_DRV almost 2 years ago.

@balaton
Thanks for the explanation
Now I can try so many things. Before, without audio, it was pointless for me.

I'll leave the sysmon screenshot:




Then, if (vokoscreenNG) allows it, I'll take some videos on the second monitor

@Balaton

I could use KVM x64 Nvidia GPU and run Arch-Linux directly, then emulate Qemu-PPC Radeon GPU inside it and use a single monitor. I did this with FS-UAE and used a single monitor.

I wonder if that would work and if speed would suffer.

@white
Quote:
Apparently you did not understand the explanation. How would you make a video on one machine of the monitor of another machine? So this won't work the way you might think. You would either need to make video on the guest but vokoscreenNG does not run there or maybe you need a video capture card where you plug the guest's GPU so you can view it on the host in a window then you can make a video of that. Remember that you have two separate machines with their own video cards. Forget that one of these is a virtual machine in the host, it still behaves like a separate machine.
Quote:
I don't even understand that. You can't use a single monitor with vfio-pci as the guest uses a dedicated GPU different from the GPU of the host. I doubt you did that with FS-UAE as it can't use vfio pass through of real GPU as far as I know. The only way to use a single monitor is to use separate inputs on the monitor and you then can switch between the two machines but can't view them on the same screen (unless your monitor does picture in picture but you can't record that).

@Balaton

Sorry, I read it correctly now.
I have this main monitor. It has 2 HDMI ports, 1 display port, and 1 VGA.
So it should work with a switch ?

@white
Did your monitor come with a manual? Maybe try reading that. As I said think of it like having two machines each with their own graphics card. You can connect two machines to this monitor and then you can view one of them by selecting the input you want to watch. Some monitors can even show multiple inputs at the same time often called picture in picture but that only happens in the monitor so you can't record that in the host that way.
You get lost because you're not specifying your goal clearly. Is your goal to view both machines on one monitor (then a monitor with multiple inputs will do but you can only view one at a time) or view both without having to switch on the same screen (then a monitor that can show multiple inputs is needed) or is it to record the guest (in that case you need to digitise the output of the virtual machine and show that on the host so you need a capture card in the host for that).

@balaton
Thanks for the explanation.
Now I understand what you meant.

note:
Paolo Bonzini, I think he participated in some way to the Virtio-GPU Driver for AmigaOS but I could be wrong I had read something about the QEMU commit.