Godot's Tips For X11

# the following shortcut restarts the X-server which is currently active on your console:

ctrl-alt-backspace

Note that this shortcut logs out the user of the X-server. This method is particularly useful to punish people who use a screen locker on machines which should be shared among different people

# usb mouse troubleshooting: It may happen that the automatically generated file /etc/X11/XF86Config-4 does not include correct settings for your usb mouse. If the command

cat /dev/input/mice|hexdump|timeout 30 head -5

outputs some data in hexadecimal format when moving your usb mouse, you may try to configure the mouse-specific sections of /etc/X11/XF86Config-4 by hand, e.g., given the following:

 Section "ServerLayout"
         Identifier     "XFree86 Configured"
         Screen      0  "Screen0" 0 0
         InputDevice    "Keyboard0" "CoreKeyboard"
 # PS/2 Mouse not detected
 # Serial Mouse not detected
         InputDevice    "USB Mouse" "CorePointer"
 EndSection
 
 Section "InputDevice"
         Identifier      "USB Mouse"
         Driver          "mouse"
         Option          "Device"                "/dev/input/mice"
         Option          "SendCoreEvents"        "true"
         Option          "Protocol"              "IMPS/2"
         Option          "ZAxisMapping"          "4 5"
         Option          "Buttons"               "5"
 EndSection

# nice X11 configuration tool for Knoppix:

sudo kxconfig
# nice /etc/X11/XF86Config generation tool used by Knoppix:

mkxf86config
# if you wish to specify an additional X display which can be accessed through ctrl+alt+8, you could add the following line to /etc/X11/xdm/Xservers:

:1 local /usr/X11R6/bin/X vt8 -dpi 100 -nolisten tcp
# installing the xv.rpm:
- # fetch and unpack the rpm:
  
  cd /tmp
  wget ftp://ftp.trilon.com/pub/xv/binaries/xv-3.10a-13.i386.rpm
- # install the stuff:
  
  sudo alien /tmp/xv-3.10a-13.i386.rpm

# you could also give it a try compiling and installing xv yourself:

# fetch and unpack the sources:

cd /tmp
wget ftp://ftp.cis.upenn.edu/pub/xv/xv-3.10a.tar.gz
tar -xzvf xv-3.10a.tar.gz
cd xv-3.10a

# read the README and INSTALL files, and pay the registration fee of 25 dollar

# replace 'extern char *sys_errlist[]; /* this too... */' by 'extern __const char *__const sys_errlist[];':

cat xv.h|sed s/"extern char \*sys_errlist\[\]; \/\* this too... \*\/"/"extern __const char \*__const sys_errlist\[\];"/ > xv.h.tmp;
mv xv.h.tmp xv.h

# make sure that the X11 libraries are found:

cat Makefile|sed s/"LIBS = -lX11 \$(JPEGLIB) \$(TIFFLIB) -lm"/"LIBS = -L\/usr\/X11R6\/lib -lX11 \$(JPEGLIB) \$(TIFFLIB) -lm"/ > Makefile.tmp
mv Makefile.tmp Makefile

# execute the make file and install the stuff if successful:

if make;then
sudo mkdir -p /usr/local/man/man1;
sudo make install;
fi