[BRLTTY] qemu: baum: brlapi__enterTtyMode: Can't determine tty number

[Alexander Epaneshnikov]

vm at[1] can't use brltty however attached script works. and I can't see
much difference.

[1]: https://pkgbuild.com/~alex19ep/arch-vm.tar.zst

--
Sincerely, Alexander
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#!/bin/bash

qemu-system-x86_64 \
	-name arch,process=arch_0 \
	-machine type=q35,smm=on,accel=kvm,usb=on,pcspk-audiodev=snd0 \
	-cpu host -smp sockets=1,cores=4,threads=1 \
	-m 8G \
	-nic user,model=virtio \
	-object rng-random,id=rng0,filename=/dev/urandom -device virtio-rng-pci,rng=rng0 \
	-drive if=pflash,format=raw,readonly=on,unit=0,file=/usr/share/ovmf/x64/OVMF_CODE.fd \
	-drive if=pflash,format=raw,unit=1,file=ARCH_VARS.fd \
	-cdrom arch.iso \
	-drive file=arch.qcow2,media=disk,if=virtio \
	-chardev braille,id=brltty \
	-audiodev pa,id=snd0 \
	-device usb-braille,id=usbbrl,chardev=brltty \
	-device intel-hda \
	-device hda-output,audiodev=snd0 \
	-boot order=d,menu=on,splash-time=5000 \
	-display sdl \
	-serial mon:stdio
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