Skip to main content

Set up VNC login without console login in Ubuntu Gnome environment

 It is said that GNOME does not support VNC connection without logging in by default.

So you have to do the following annoying task.


1) gnome-remote-desktop settings

Open "Settings" in gnome-remote-desktop, select "Sharing",

Find "Remote Desktop" or "Screen Sharing" and disable it. 


2) Install x11vnc

sudo apt update

sudo apt install x11vnc


3) Set x11vnc password

x11vnc -storepasswd


4) Set auto-start at boot (create x11vnc.service file)

sudo nano /etc/systemd/system/x11vnc.service


Contents

[Unit]

Description=Start x11vnc at startup

After=display-manager.service


[Service]

Type=oneshot

User=<username>

Group=<groupname>

ExecStart=/usr/bin/x11vnc -forever -usepw -display :0

RemainAfterExit=yes

Restart=on-failure


[Install]

WantedBy=multi-user.target


5) Apply

sudo systemctl daemon-reload

sudo systemctl enable x11vnc.service

sudo systemctl start x11vnc.service


Comments

Popular posts from this blog

sanitize on in CMakeLists.txt

1. CMakeLists.txt set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=address") add_compile_options(-fsanitize=address) If a subdir is set with add_subdirectory and a module that does not support sanitize is imported from the path and needs to be removed, add -fno-sanitize=address to add_compile_options in CMakeLists.txt of the subdir to remove it. Basically, if you enable sanitize, sanitize will adjust ulimit's core to 0, so core will not occur. You can do this by putting the following part as an environment variable. (Below is the part you put in systemd's service) 2. service file in systemd [Service] LimitCORE=infinity Environment="ASAN_OPTIONS=handle_segv=0:handle_abort=1:abort_on_error=1:disable_coredump=0"

[bash-script] get_info.sh print cpu allocation infomation of threads

1) way1 ps xH -o 'pid tid cmd comm pcpu psr' 2) way2 #!/bin/bash TMP_FILE=$(mktemp /tmp/abc-script.XXXXXX) echo ${TMP_FILE} ps xH -o 'pid tid cmd comm pcpu ' > ${TMP_FILE} function make_header() {   echo -n "$1"   echo " psr" } function make_values() {   echo -n "$1"   STATUS_FILE=/proc/${2}/task/${3}/status   if [ -f ${STATUS_FILE} ] ; then     CPU_SET=`cat ${STATUS_FILE}  |grep Cpus_allowed_list |awk ' { print $2 } '`   else     CPU_SET="None"   fi   echo " ${CPU_SET}" } let IDX=0 while IFS='' read -r line || [[ -n "$line" ]]; do    LINE_SEP=( $line )    MY_PID=${LINE_SEP[0]}    MY_TID=${LINE_SEP[1]}    if [ ${IDX} -eq 0 ]; then      SZ_HEADER=`make_header "$line"`      echo ${SZ_HEADER}    else      SZ_VALUES=`make_values "$line" ${MY_PID} ${MY_TID}`      echo ${SZ_VALUES}...

linux file system recovery

1. broken hdd disk backup  1) remote-server nc -v -l [port] > hdd_backup.img  2) equipment of broken hdd dd if=/dev/sda | nc -v [remote-server IP] [port]   ex)  1) remote-server nc -v -l 2222 > hdd_backup.img  2) equipment of broken hdd dd if=/dev/sda | nc -v 1.1.1.1 2222 2. use recovery tool  testdisk (http://www.cgsecurity.org/wiki/TestDisk_Download) 3. run fsck from img file  # losetup --offset 32256 /dev/loop2 harddrive.img  # fsck /dev/loop2  and again testdisk reference: https://major.io/2010/12/14/mounting-a-raw-partition-file-made-with-dd-or-dd_rescue-in-linux/ https://bbs.archlinux.org/viewtopic.php?id=136766