【发布时间】：2020-01-16 20:47:03
【问题描述】：
我使用 yocto 为 Raspberry Pi 3 和触摸屏构建了一个 X11 映像。我可以通过在串行会话中手动运行命令来启动使用 Electron (chromium) 构建的应用程序：
export DISPLAY=:0
/usr/lib/node/electron/dist/electron --no-sandbox /home/root/app
我虽然使用 init.d 脚本在启动时自动执行此操作，但我想以正确的方式执行此操作。我尝试使用上面的命令在我的用户目录中创建一个.Xsession 文件，但它不起作用，我不知道我是否可以获得发生的日志。
根据this wiki，X11启动有很多步骤。目前，我只看到一个终端（我猜来自 Matchbox）和一个鼠标光标。
用系统启动应用程序的“标准”方式是什么？有没有办法移除触摸屏的光标？
编辑
这是我的/etc/X11目录的内容：
- Xsession
- Xsession.d/
- xinit/
- xorg.conf
Xsession：
#!/bin/sh
if [ -x /usr/bin/dbus-launch ]; then
# As this is the X session script, always start a new DBus session.
eval `dbus-launch --sh-syntax --exit-with-session </dev/null`
echo "D-BUS per-session daemon address is: $DBUS_SESSION_BUS_ADDRESS"
fi
. /etc/profile
if [ -f $HOME/.profile ]; then
. $HOME/.profile
fi
SYSSESSIONDIR=/etc/X11/Xsession.d
export CLUTTER_DISABLE_MIPMAPPED_TEXT=1
for SESSIONFILE in $SYSSESSIONDIR/*; do
set +e
case "$SESSIONFILE" in
*.sh)
. "$SESSIONFILE"
;;
*.shbg)
"$SESSIONFILE" &
;;
*~)
# Ignore backup files
;;
*)
"$SESSIONFILE"
;;
esac
set -e
done
exit 0
xorg.conf: 空。
Xsession.d/：
- 13xdgbasedirs.sh
- 30xinput_calibrate.sh
- 89xdgautostart.sh
- 90XWindowManager.sh
89xdgautostart.sh：
XDGAUTOSTART=/etc/xdg/autostart
if [ -d $XDGAUTOSTART ]; then
for SCRIPT in $XDGAUTOSTART/*; do
CMD=`grep ^Exec= $SCRIPT | cut -d '=' -f 2`
$CMD &
done
fi
90XWindowManager.sh：
if [ -x $HOME/.Xsession ]; then
exec $HOME/.Xsession
elif [ -x /usr/bin/x-session-manager ]; then
exec /usr/bin/x-session-manager
else
exec /usr/bin/x-window-manager
fi
还有一个文件/etc/xserver-nodm/Xserver：
#!/bin/sh
# This script is only needed to make sure /etc/X11/xserver-common
# can affect XSERVER, ARGS & DPI: otherwise systemd could just use
# /etc/default/xserver-nodm as EnvironmentFile and sysvinit could just
# source the same file
. /etc/profile
# load default values for XSERVER, ARGS, DISPLAY...
. /etc/default/xserver-nodm
# Allow xserver-common to override ARGS, XSERVER, DPI
if [ -e /etc/X11/xserver-common ] ; then
. /etc/X11/xserver-common
if [ ! -e $XSERVER ] ; then
XSERVER=$(which $XSERVER)
fi
fi
if [ -n "$DPI" ] ; then
ARGS="$ARGS -dpi $DPI"
fi
exec xinit /etc/X11/Xsession -- $XSERVER $DISPLAY $ARGS $*
还有一个文件/etc/rc5.d/S09xserver-nodm：
#!/bin/sh
#
### BEGIN INIT INFO
# Provides: xserver
# Required-Start: $local_fs $remote_fs dbus
# Required-Stop: $local_fs $remote_fs
# Default-Start: 5
# Default-Stop: 0 1 2 3 6
### END INIT INFO
killproc() { # kill the named process(es)
pid=`/bin/pidof $1`
[ "$pid" != "" ] && kill $pid
}
read CMDLINE < /proc/cmdline
for x in $CMDLINE; do
case $x in
x11=false)
echo "X Server disabled"
exit 0;
;;
esac
done
case "$1" in
start)
. /etc/profile
#default for USER
. /etc/default/xserver-nodm
echo "Starting Xserver"
if [ "$USER" != "root" ]; then
# setting for rootless X
chmod o+w /var/log
chmod g+r /dev/tty[0-3]
# hidraw device is probably needed
if [ -e /dev/hidraw0 ]; then
chmod o+rw /dev/hidraw*
fi
fi
# Using su rather than sudo as latest 1.8.1 cause failure [YOCTO #1211]
su -l -c '/etc/xserver-nodm/Xserver &' $USER
# Wait for the desktop to say its finished loading
# before loading the rest of the system
# dbus-wait org.matchbox_project.desktop Loaded
;;
stop)
echo "Stopping XServer"
killproc xinit
sleep 1
chvt 1 &
;;
restart)
$0 stop
$0 start
;;
*)
echo "usage: $0 { start | stop | restart }"
;;
esac
exit 0
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标签： linux raspberry-pi3 x11 yocto