#!/bin/sh

PATH="/sbin:$PATH"
CONFIG_DIR=/etc/X11
SERVER_BINARY=/usr/bin/Xorg
SERVER_SYMLINK="$CONFIG_DIR/X"
XORGCONFIG="$CONFIG_DIR/xorg.conf"
XORGCONFIG_DIR="$CONFIG_DIR/xorg.conf.d"
CONFIG_AUX_DIR=/var/lib/x11
X11R6_LIBS=/usr/X11R6/lib
LOCAL_LIBS=/usr/local/lib

# Pretty echo, underline the specified string:
pecho() {
    echo "$@"
    echo "$@"|sed 's/./-/g'
}

exec >&3

if [ -e "$SERVER_SYMLINK" ]; then
    pecho "X server symlink status:"
    ls -dl "$SERVER_SYMLINK"
    ls -dl "$(readlink "$SERVER_SYMLINK")"
else
    echo "$SERVER_SYMLINK does not exist."
fi

if ! [ -L "$SERVER_SYMLINK" ]; then
    echo "$SERVER_SYMLINK is not a symlink."
fi

if ! [ -x "$SERVER_SYMLINK" ]; then
    echo "$SERVER_SYMLINK is not executable."
fi

echo

if ldd "$SERVER_BINARY" | grep -qs "$LOCAL_LIBS"; then
   pecho "The server is using local libraries!"
   ldd "$SERVER_BINARY" | grep "$LOCAL_LIBS"
   echo
fi

if ldd "$SERVER_BINARY" | grep -qs "$X11R6_LIBS"; then
   pecho "The server is using obsolete libraries!"
   ldd "$SERVER_BINARY" | grep "$X11R6_LIBS"
   echo
fi

if dpkg-divert --list | grep -qs -i libgl; then
    pecho "Diversions concerning libGL are in place"
    dpkg-divert --list | grep -i libgl
    echo
fi

if which lspci > /dev/null 2>&1; then
    pecho "VGA-compatible devices on PCI bus:"
    LC_ALL=C lspci -nn | grep 'VGA compatible controller'
else
    echo "The lspci command was not found; not including PCI data."
fi

echo

if [ -e "$XORGCONFIG" ]; then
    pecho "Xorg X server configuration file status:"
    ls -dl "$XORGCONFIG"
    echo
    pecho "Contents of $XORGCONFIG:"
    iconv -c -t ascii "$XORGCONFIG"
else
    echo "$XORGCONFIG does not exist."
fi

echo

if [ -d "$XORGCONFIG_DIR" ]; then
    pecho "Contents of $XORGCONFIG_DIR:"
    ls -l "$XORGCONFIG_DIR"
else
    echo "$XORGCONFIG_DIR does not exist."
fi

echo

KMS_CONFS_DIR=/etc/modprobe.d
KMS_CONFS=$(ls $KMS_CONFS_DIR/*-kms.conf 2>/dev/null)

if [ -n "$KMS_CONFS" ]; then
    pecho "KMS configuration files:"
    for CONF in $KMS_CONFS; do
      echo "$CONF:"
      # Indent, and get rid of empty lines:
      sed 's/^/  /' < "$CONF"|egrep -v '^\s*$'
    done
else
    echo "$KMS_CONFS_DIR contains no KMS configuration files."
fi

echo

KERNEL_VERSION=/proc/version

if [ -e "$KERNEL_VERSION" ]; then
    pecho "Kernel version ($KERNEL_VERSION):"
    cat /proc/version
else
    echo "No kernel version found (missing $KERNEL_VERSION)."
fi

echo

XORG_LOGS=$(ls -dt /var/log/Xorg.*.log 2>/dev/null)

if [ -n "$XORG_LOGS" ]; then
    pecho "Xorg X server log files on system:"
    ls -dlrt /var/log/Xorg.*.log 2>/dev/null
    echo
    for LOG in $XORG_LOGS; do
        if [ -f "$LOG" ]; then
            pecho "Contents of most recent Xorg X server log file ($LOG):"
            cat "$LOG"
            # the log files are large; only show the most recent
            break
        fi
    done
else
    echo "No Xorg X server log files found."
fi

echo

if [ -x /sbin/udevadm ]; then
    pecho "udev information:"
    /sbin/udevadm info --export-db | awk -F '\n' -v RS='\n\n' '/E: ID_INPUT/ { print; print "" }'
    echo
fi

if [ -x /bin/dmesg ]; then
    pecho "DRM Information from dmesg:"
    dmesg | egrep -i 'drm|agp'
    echo
fi

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