apt install linux-source build-essential libncurses-dev bison flex libssl-dev libelf-dev fluidsynth jackd2 rosegarden
apt build-dep linux (ha esetleg hiányozna valami még ...)
cd /usr/src/
unxz -v linux-patch-4.19-rt.patch.xz
tar -xvf linux-source-4.19.tar
cd linux-source-4.19/
patch -p1 < ../linux-patch-4.19-rt.patch
cp ../linux-config-4.19/config.amd64_rt_amd64.xz .
unxz -v config.amd64_rt_amd64.xz
mv config.amd64_rt_amd64 .config
make menuconfig
(Processor type and features -> Preemption Model -> Fully Preemptible Kernel (RT))
(Processor type and features ->Timer Frequency: 1000 Hz)
(General setup -> Local version - append to kernel release : -tf-1000)
scripts/config --disable DEBUG_INFO
make clean
make -j4 deb-pkg
dpkg -i linux-image-4.19.67-rt24-tf-1000_4.19.67-rt24-tf-1000-1_amd64.deb
Rebootot neki ...
root@debian:/usr/src# uname -a
Linux debian 4.19.67-rt24-tf-1000 #1 SMP PREEMPT RT Wed Nov 27 17:00:12 CET 2019 x86_64 GNU/Linux
root@debian:/usr/src# grep -i "^CONFIG_HZ" /boot/config-4.19.67-rt24-tf-1000
CONFIG_HZ_1000=y
CONFIG_HZ=1000
ice@debian:~/bin$ cat audio.sh
#!/bin/bash
# Script to launch audio servers for music-making.
# By Ted Felix : http://tedfelix.com/linux/linux-midi.html
case $1 in
start )
echo Starting JACK...
pasuspender -- \
jackd -d alsa --device hw:0,7 --rate 48000 --period 1024 \
&>/tmp/jackd.out &
sleep .5
echo Starting fluidsynth...
# Start fluidsynth
fluidsynth --server --no-shell --audio-driver=jack \
--connect-jack-outputs --reverb=0 --chorus=0 --gain=0.8 \
/usr/share/sounds/sf2/FluidR3_GM.sf2 \
&>/tmp/fluidsynth.out &
sleep 1
if pgrep -l jackd && pgrep -l fluidsynth
then
echo Audio servers running.
else
echo There was a problem starting the audio servers.
fi
;;
stop )
killall fluidsynth
killall jackd
echo Audio servers stopped.
;;
* )
echo Please specify start or stop...
;;
esac
audio.sh start-tal indul a mandula aztán lehet indítani a rosegardent.
Letesztelve.