readme fixes and no jackd in autostart

README.md

@@ -1,12 +1,12 @@
 # supercolliderStandaloneRPI2
-Standalone for Raspberry Pi 2 or 3 with Raspbian Jessie including the full IDE.
+Standalone for Raspberry Pi 2 or 3 with Raspbian Stretch including the full IDE.
 
 This is the audio synthesis program [SuperCollider](http://github.com/supercollider/supercollider) (3.9.0, commit 8567e7e, 16jan2018) + [sc3-plugins](https://github.com/supercollider/sc3-plugins) (master, commit aa606ed, 5nov2017) compiled for rpi2 and rpi3.
 
 It was built using [this guide](http://supercollider.github.io/development/building-raspberrypi.html) on a **Raspberry Pi 3** under [2017-11-29-raspbian-stretch](http://raspberrypi.org/downloads/raspbian/) (Raspbian Stretch with Desktop). It also works on the **Raspberry Pi 2**.
 For **Raspberry Pi 1** and **Raspberry Pi Zero** use [this repository](https://github.com/redFrik/supercolliderStandaloneRPI1).
 
-The standalone structure is loosely based on [Miguel Negrão's template](https://github.com/miguel-negrao/scStandalone). This standalone is self-contained and all files are in one directory (except for the sc_ide_conf.yaml file - see below). It can coexist with the Raspbian bundled scsynth used by Sonic Pi (i.e. no need to uninstall Sonic Pi and the two programs can even run simultaneously).
+The standalone structure is loosely based on [Miguel Negrão's template](https://github.com/miguel-negrao/scStandalone). This standalone is self-contained and all files are in one directory (except for the sc_ide_conf.yaml file - see below). It can coexist with the Raspbian bundled scsynth used by Sonic Pi (i.e. no need to uninstall Sonic Pi and the two programs can even run simultaneously as long as you start Sonic Pi first).
 
 installation
 --
@@ -16,7 +16,9 @@ _(this assumes you have done all the usual initialisation... burned the disk ima
 open the terminal on the RPi and type...
 
 * `sudo apt-get update`
-* `sudo apt-get install libqt5webkit5 libqt5sensors5 libqt5positioning5 libqt5concurrent5 libfftw3-bin libcwiid1`
+* `sudo apt-get upgrade`
+* `sudo apt-get dist-upgrade`
+* `sudo apt-get install libqt5webkit5 libqt5sensors5 libqt5positioning5 libfftw3-bin libcwiid1`
 * `git clone https://github.com/redFrik/supercolliderStandaloneRPI2 --depth 1`
 * `mkdir -p ~/.config/SuperCollider`
 * `cp supercolliderStandaloneRPI2/sc_ide_conf_temp.yaml ~/.config/SuperCollider/sc_ide_conf.yaml`
@@ -40,7 +42,7 @@ Then open another terminal window and type...
 
 or just double click the desktop icon. SuperCollider IDE should start and run like normal - with scope, meter, plot, gui, animation, help, quarks etc.
 
-KNOWN ISSUES and TODO:
+KNOWN ISSUES:
 
 * 'libEGL warning: DRI2: failed to authenticate' that is posted in terminal at scide startup is harmless
 
@@ -54,22 +56,38 @@ autostart
 
 Then edit the autostart script to load whichever file. By default it will load `mycode.scd`.
 
+jack
+--
+
+If you start SuperCollider without having Jack already running (like when autostarting or running headless), Jack will automatically launch when you boot sc server. the audio settings then used are found in the file...
+
+* `nano ~/.jackdrc`
+
+(this file is created by qjackd so if you never ran qjackd you might need to create this file manually.)
+
+To set up Jack to use an external usb sound card edit the file to look like this...
+
+* `/usr/bin/jackd -P75 -dalsa -dhw:1 -p1024 -n3 -s -r44100`
+
+NOTE: the internal soundcard volume is by default set low (40). type `alsamixer` in terminal and adjust the pcm volume to 85 with the arrow keys, esc key exits.
+
 headless
 --
 
 To run sclang+scsynth only from ssh...
 
 * `export DISPLAY=:0.0`
-* `jackd -P75 -dalsa -dhw:1 -p1024 -n3 -s -r44100 &` #edit -dhw to match your audio output. 0 is usually hdmi, and 1 the usb soundcard
 * `cd supercolliderStandaloneRPI2`
 * `./sclang -a -l sclang.yaml`
 
 NOTE: one can also specify a .scd file to load when starting sclang like this: `./sclang -a -l sclang.yaml mycode.scd`
 
-jessie-lite
---
+- - -
+
+stretch-lite
+==
 
-The standalone also works under jessie-lite if the following additional steps are taken...
+The standalone also works under Raspbian Stretch-lite if the following additional steps are taken...
 
 installation:
 
@@ -85,11 +103,11 @@ installation:
 * `sudo nano /etc/security/limits.conf` #and add the following two lines at the end
   * `@audio - memlock 256000`
   * `@audio - rtprio 75`
-* `nano supercolliderStandaloneRPI2/autostart.sh` #and change the jackd path to `/usr/local/bin/jackd` _(after you git cloned this standalone above)_
+* `nano ~/.jackdrc` #and add the following (use `-dhw:1` for usb soundcard)
+  * `/usr/local/bin/jackd -P75 -dalsa -dhw:0 -r44100 -p1024 -n3`
 * `sudo reboot`
 
 startup:
 
-* `jackd -P75 -dalsa -dhw:1 -p1024 -n3 -s -r44100 &` #edit -dhw to match your audio output. 0 is usually hdmi, and 1 the usb soundcard
 * `cd supercolliderStandaloneRPI2`
 * `xvfb-run --auto-servernum ./sclang -a -l sclang.yaml`

autostart.sh

@@ -1,3 +1,2 @@
 #!/bin/bash
-/usr/bin/jackd -P75 -dalsa -dhw:1 -p1024 -n3 -s &
 ./sclang -a -l sclang.yaml mycode.scd