Update the Linux build instructions
diff --git a/docs/README-linux.md b/docs/README-linux.md
index 3136851..2860085 100644
--- a/docs/README-linux.md
+++ b/docs/README-linux.md
@@ -9,18 +9,18 @@
 default configuration parameters.

 

 

-================================================================================

 Build Dependencies

-================================================================================

+--------------------------------------------------------------------------------

     

 Ubuntu 20.04, all available features enabled:

 

-sudo apt-get install build-essential git make cmake autoconf automake \

-libtool libasound2-dev libpulse-dev libaudio-dev libx11-dev libxext-dev \

-libxrandr-dev libxcursor-dev libxi-dev libxinerama-dev libxxf86vm-dev \

-libxss-dev libgl1-mesa-dev libdbus-1-dev libudev-dev libgles2-mesa-dev \

-libegl1-mesa-dev libibus-1.0-dev fcitx-libs-dev libsamplerate0-dev \

-libsndio-dev libwayland-dev libxkbcommon-dev

+    sudo apt-get install build-essential git make cmake autoconf automake \

+    libtool pkg-config libasound2-dev libpulse-dev libaudio-dev libjack-dev \

+    libx11-dev libxext-dev libxrandr-dev libxcursor-dev libxi-dev \

+    libxinerama-dev libxxf86vm-dev libxss-dev libgl1-mesa-dev libdbus-1-dev \

+    libudev-dev libgles2-mesa-dev libegl1-mesa-dev libibus-1.0-dev \

+    fcitx-libs-dev libsamplerate0-dev libsndio-dev libwayland-dev \

+    libxkbcommon-dev libdrm-dev libgbm-dev

 

 NOTES:

 - This includes all the audio targets except arts and esd, because Ubuntu

@@ -34,9 +34,8 @@
   configure script to include DirectFB support. Send patches.  :)

 

 

-================================================================================

 Joystick does not work

-================================================================================

+--------------------------------------------------------------------------------

 

 If you compiled or are using a version of SDL with udev support (and you should!)

 there's a few issues that may cause SDL to fail to detect your joystick. To

@@ -66,8 +65,8 @@
 A combined rule for the Saitek Pro Flight Rudder Pedals to fix both issues looks 

 like:

     

-   SUBSYSTEM=="input", ATTRS{idProduct}=="0763", ATTRS{idVendor}=="06a3", MODE="0666", ENV{ID_INPUT_JOYSTICK}="1"

-   SUBSYSTEM=="input", ATTRS{idProduct}=="0764", ATTRS{idVendor}=="06a3", MODE="0666", ENV{ID_INPUT_JOYSTICK}="1"

+    SUBSYSTEM=="input", ATTRS{idProduct}=="0763", ATTRS{idVendor}=="06a3", MODE="0666", ENV{ID_INPUT_JOYSTICK}="1"

+    SUBSYSTEM=="input", ATTRS{idProduct}=="0764", ATTRS{idVendor}=="06a3", MODE="0666", ENV{ID_INPUT_JOYSTICK}="1"

    

 You can set up similar rules for your device by changing the values listed in

 idProduct and idVendor. To obtain these values, try: