Well it's not firewalld. lsof -i :6050 returns nothing.
from bash x: bash -x /usr/lib64/x2go/x2gogetfreeport $(hostname) "$(which ss)" display 50 + typeset current_host_name=ourdomain.edu + typeset ss=/usr/sbin/ss + typeset type=display + typeset start=50 + typeset end=65535 + typeset 'empty_regex=^[[:space:]]*$' + [[ -z ourdomain.edu ]] + [[ ourdomain.edu =~ ^[[:space:]]*$ ]] + [[ ourdomain.edu = \(\n\o\n\e\) ]] + [[ ourdomain.edu = \l\o\c\a\l\h\o\s\t ]] + [[ -z /usr/sbin/ss ]] + [[ /usr/sbin/ss =~ ^[[:space:]]*$ ]] + typeset -i start_i=50 + typeset -i end_i=65535 + [[ -z 50 ]] + [[ 50 != \5\0 ]] + [[ 50 -ne 50 ]] + [[ 50 -lt 0 ]] + [[ 50 -gt 65535 ]] + [[ -z 65535 ]] + [[ 65535 != \6\5\5\3\5 ]] + [[ 65535 -ne 65535 ]] + [[ 65535 -lt 50 ]] + [[ 65535 -gt 65535 ]] + [[ display != \l\o\w\l\e\v\e\l ]] + [[ display != \d\i\s\p\l\a\y ]] ++ x2gopath libexec + typeset x2go_lib_path=/usr/lib64/x2go + typeset X2GO_INTERNAL_SOURCE=1 + : 1 + . /usr/lib64/x2go/x2gocheckport ++ [[ -z 1 ]] ++ typeset -a used_x2go_ports ++ typeset -a used_system_ports ++ typeset -a used_display_ports ++ used_x2go_ports=() ++ used_system_ports=() ++ used_display_ports=() + unset X2GO_INTERNAL_SOURCE + typeset -i ret_port=50 + typeset -i ret=1 + typeset -i work_port=0 + typeset -i stop_port=65535 + [[ display = \d\i\s\p\l\a\y ]] + stop_port=59535 + (( work_port = start )) + (( i <= stop_port )) + typeset -i i=0 + typeset -i value_found=0 + [[ display = \d\i\s\p\l\a\y ]] + check_display_port ourdomain.edu /usr/sbin/ss 50 + typeset current_host_name=ourdomain.edu + typeset ss=/usr/sbin/ss + typeset port=50 + typeset 'empty_regex=^[[:space:]]*$' + [[ -z ourdomain.edu ]] + [[ ourdomain.edu =~ ^[[:space:]]*$ ]] + [[ ourdomain.edu = \(\n\o\n\e\) ]] + [[ ourdomain.edu = \l\o\c\a\l\h\o\s\t ]] + [[ -z /usr/sbin/ss ]] + [[ /usr/sbin/ss =~ ^[[:space:]]*$ ]] + typeset -i port_i=50 + [[ -z 50 ]] + [[ 50 != \5\0 ]] + [[ 50 -ne 50 ]] + [[ 50 -lt 0 ]] + [[ 50 -gt 59535 ]] + typeset -i ret=0 + [[ 0 -eq 0 ]] + initialize_display_ports ourdomain.edu + typeset current_host_name=ourdomain.edu + typeset 'empty_regex=^[[:space:]]*$' + [[ -z ourdomain.edu ]] + [[ ourdomain.edu =~ ^[[:space:]]*$ ]] + [[ ourdomain.edu = \(\n\o\n\e\) ]] + [[ ourdomain.edu = \l\o\c\a\l\h\o\s\t ]] + typeset -a used_display_ports_work + used_display_ports_work=() + IFS=' |' + read -r -d '' -a used_display_ports_work ++ /usr/lib64/x2go/x2gogetdisplays ourdomain.edu + typeset -i item_i=0 + typeset item= + for item in "${used_display_ports_work[@]}" + item_i=DBI + [[ -n DBI ]] + [[ DBI -eq 0 ]] + [[ DBI = \0 ]] + for item in "${used_display_ports_work[@]}" + item_i='connect('\''dbname=/var/lib/x2go/x2go_sessions'\'','\'''\'',...)' /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") + printf '%d\n' 50 50 + exit 1 Here's some debug from X2Go Mac Client: x2go-INFO-1> "Starting X2Go Client 4.1.2.2..." x2go-WARNING-1> English language requested, not loading translator. x2go-WARNING-1> English language requested, not loading translator. x2go-INFO-3> "Started X2Go Client." x2go-DEBUG-../src/onmainwindow.cpp:575> "$HOME=/Users/rkudyba" x2go-DEBUG-../src/onmainwindow.cpp:2266> Reading 2 sessions from config file. x2go-DEBUG-../src/sessionbutton.cpp:361> Creating QPixmap with session icon: ":/img/icons/128x128/x2gosession.png". x2go-DEBUG-../src/sessionbutton.cpp:361> Creating QPixmap with session icon: ":/img/icons/128x128/x2gosession.png". x2go-DEBUG-../src/onmainwindow.cpp:13290> libssh not initialized yet. Initializing. x2go-DEBUG-../src/x2goutils.cpp:219> path value at beginning: "/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/VMware Fusion.app/Contents/Public:/opt/X11/bin" x2go-DEBUG-../src/x2goutils.cpp:242> tmp_clean_add: ("/usr/local/bin") x2go-DEBUG-../src/x2goutils.cpp:270> clean_add: ("/usr/local/bin") x2go-DEBUG-../src/x2goutils.cpp:291> found entry i (0) in orig_path_list ("/usr/local/bin"): true x2go-DEBUG-../src/x2goutils.cpp:309> return value at end: "/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/VMware Fusion.app/Contents/Public:/opt/X11/bin" x2go-DEBUG-../src/x2goutils.cpp:219> path value at beginning: "/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/VMware Fusion.app/Contents/Public:/opt/X11/bin" x2go-DEBUG-../src/x2goutils.cpp:242> tmp_clean_add: ("/opt/local//bin") x2go-DEBUG-../src/x2goutils.cpp:270> clean_add: ("/opt/local//bin") x2go-DEBUG-../src/x2goutils.cpp:291> found entry i (0) in orig_path_list ("/opt/local//bin"): false x2go-DEBUG-../src/x2goutils.cpp:309> return value at end: "/opt/local//bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/VMware Fusion.app/Contents/Public:/opt/X11/bin" x2go-DEBUG-../src/pulsemanager.cpp:131> Found PA binary as "/Applications/x2goclient.app/Contents/exe/pulseaudio" x2go-DEBUG-../src/pulsemanager.cpp:132> Corresponding working dir: "/Applications/x2goclient.app/Contents/exe" x2go-DEBUG-../src/pulsemanager.cpp:369> pulseaudio --version returned:"pulseaudio 13.0-rebootstrapped " x2go-DEBUG-../src/pulsemanager.cpp:227> pulse started with arguments ("--exit-idle-time=-1", "-n", "-F", "/Users/rkudyba/.x2go/pulse/config.pa", "-p", "/Applications/x2goclient.app/Contents/Frameworks/pulse-13.0/modules", "--high-priority", "--log-level=debug", "--verbose", "--log-target=file:/Users/rkudyba/.x2go/pulse/pulse.log") - waiting for it to finish... x2go-DEBUG-../src/onmainwindow.cpp:2752> Creating QPixmap with session icon: '":/img/icons/128x128/x2gosession.png"'. x2go-DEBUG-../src/onmainwindow.cpp:6771> Setting focus. x2go-INFO-8> "Starting connection to server: ourdomain.edu:22" x2go-DEBUG-../src/onmainwindow.cpp:2853> Starting new ssh connection to server:"ourdomain.edu":"22" krbLogin: false x2go-DEBUG-../src/sshmasterconnection.cpp:168> SshMasterConnection, host " ourdomain.edu"; port 22; user "localguy"; useproxy false; proxyserver ""; proxyport 22 x2go-DEBUG-../src/sshmasterconnection.cpp:248> Starting SSH connection without Kerberos authentication. x2go-DEBUG-../src/sshmasterconnection.cpp:250> SshMasterConnection, instance SshMasterConnection(0x7fe92e5bcd00) created. x2go-DEBUG-../src/sshmasterconnection.cpp:495> SshMasterConnection, instance SshMasterConnection(0x7fe92e5bcd00) entering thread. x2go-DEBUG-../src/sshmasterconnection.cpp:797> Session port before config file parse: 22 x2go-DEBUG-../src/sshmasterconnection.cpp:807> Session port after config file parse: 22 x2go-DEBUG-../src/sshmasterconnection.cpp:870> Session port before config file parse (part 2): 22 x2go-DEBUG-../src/sshmasterconnection.cpp:880> Session port after config file parse (part 2): 22 x2go-DEBUG-../src/sshmasterconnection.cpp:904> cserverAuth x2go-DEBUG-../src/sshmasterconnection.cpp:943> state: 1 x2go-DEBUG-../src/sshmasterconnection.cpp:1218> Trying password mechanism if available. x2go-DEBUG-../src/sshmasterconnection.cpp:1222> Password mechanism available. Continuing. x2go-DEBUG-../src/sshmasterconnection.cpp:687> User authentication OK. x2go-DEBUG-../src/sshmasterconnection.cpp:1708> LOGIN CHECK:"LOGIN OK " x2go-DEBUG-../src/sshmasterconnection.cpp:1711> don't have interaction x2go-DEBUG-../src/sshmasterconnection.cpp:1744> LOOP FINISHED x2go-DEBUG-../src/sshmasterconnection.cpp:1748> No interaction needed, continue session x2go-DEBUG-../src/sshmasterconnection.cpp:702> Login Check - OK x2go-DEBUG-../src/onmainwindow.cpp:2947> SSH connection established. x2go-DEBUG-../src/onmainwindow.cpp:3374> Continue normal X2Go session x2go-DEBUG-../src/sshprocess.cpp:199> Executing remote command via SshProcess object 0: "x2golistsessions" x2go-DEBUG-../src/sshprocess.cpp:213> this=SshProcess(0x7fe92e6c1450) Running masterCon->addChannelConnection(this, ' "8c7a9bb9-2997-40cc-95d8-fd196ab46804" ', ' "bash -l -c 'echo "X2GODATABEGIN:8c7a9bb9-2997-40cc-95d8-fd196ab46804"; export PATH="/usr/local/bin:/usr/bin:/bin";export TERM="dumb"; x2golistsessions; echo "X2GODATAEND:8c7a9bb9-2997-40cc-95d8-fd196a" '); x2go-DEBUG-../src/sshmasterconnection.cpp:1810> Locking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1812> Passing new channel connection object to channelConnections. x2go-DEBUG-../src/sshmasterconnection.cpp:1814> Unlocking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1977> Creating new channel. x2go-DEBUG-../src/sshmasterconnection.cpp:1990> New channel:0x7fe92e5da590 x2go-DEBUG-../src/sshmasterconnection.cpp:2065> Executing remote: "bash -l -c 'echo "X2GODATABEGIN:8c7a9bb9-2997-40cc-95d8-fd196ab46804"; export PATH="/usr/local/bin:/usr/bin:/bin";export TERM="dumb"; x2golistsessions; echo "X2GODATAEND:8c7a9bb9-2997-40cc-95d8-fd196ab46804";'" x2go-DEBUG-../src/sshmasterconnection.cpp:2082> New exec channel created. x2go-DEBUG-../src/sshmasterconnection.cpp:2165> EOF on channel 0x7fe92e5da590; SshProcess object: 0 x2go-DEBUG-../src/sshmasterconnection.cpp:2222> EOF sent. x2go-DEBUG-../src/sshmasterconnection.cpp:2224> Channel closed. x2go-DEBUG-../src/sshprocess.cpp:532> SSH finished: raw output (stdout): "X2GODATABEGIN:8c7a9bb9-2997-40cc-95d8-fd196ab46804 DBIconnect('dbname=/var/lib/x2go/x2go_sessions','',...)failed:unabletoopendatabasefileat/usr/share/perl5/vendor_perl/X2Go/Server/DB/SQLite3.pmline66. X2GODATAEND:8c7a9bb9-2997-40cc-95d8-fd196ab46804 " x2go-DEBUG-../src/sshprocess.cpp:543> SSH finished: true - "DBIconnect('dbname=/var/lib/x2go/x2go_sessions','',...)failed:unabletoopendatabasefileat/usr/share/perl5/vendor_perl/X2Go/Server/DB/SQLite3.pmline66. " (0). x2go-DEBUG-../src/onmainwindow.cpp:3861> "DBIconnect('dbname=/var/lib/x2go/x2go_sessions','',...)failed:unabletoopendatabasefileat/usr/share/perl5/vendor_perl/X2Go/Server/DB/SQLite3.pmline66. " x2go-DEBUG-../src/onmainwindow.cpp:4521> Executing remote command: "X2GODPI=72 X2GO_XINERAMA=no x2gostartagent 800x600 adsl 16m-jpeg-9 unix-kde-depth_32 us query 0 D MATE both" x2go-DEBUG-../src/sshprocess.cpp:199> Executing remote command via SshProcess object 1: "X2GODPI=72 X2GO_XINERAMA=no x2gostartagent 800x600 adsl 16m-jpeg-9 unix-kde-depth_32 us query 0 D MATE both" x2go-DEBUG-../src/sshprocess.cpp:213> this=SshProcess(0x7fe92e5f7ef0) Running masterCon->addChannelConnection(this, ' "563c9735-72a3-44ce-a284-7519be6288bc" ', ' "bash -l -c 'echo "X2GODATABEGIN:563c9735-72a3-44ce-a284-7519be6288bc"; export PATH="/usr/local/bin:/usr/bin:/bin";export TERM="dumb"; X2GODPI=72 X2GO_XINERAMA=no x2gostartagent 800x600 adsl 16m-jpeg-9" '); x2go-DEBUG-../src/sshmasterconnection.cpp:1810> Locking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1812> Passing new channel connection object to channelConnections. x2go-DEBUG-../src/sshmasterconnection.cpp:1814> Unlocking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1977> Creating new channel. x2go-DEBUG-../src/sshmasterconnection.cpp:1990> New channel:0x7fe92e66ac60 x2go-DEBUG-../src/sshmasterconnection.cpp:2065> Executing remote: "bash -l -c 'echo "X2GODATABEGIN:563c9735-72a3-44ce-a284-7519be6288bc"; export PATH="/usr/local/bin:/usr/bin:/bin";export TERM="dumb"; X2GODPI=72 X2GO_XINERAMA=no x2gostartagent 800x600 adsl 16m-jpeg-9 unix-kde-depth_32 us query 0 D MATE both; echo "X2GODATAEND:563c9735-72a3-44ce-a284-7519be6288bc";'" x2go-DEBUG-../src/sshmasterconnection.cpp:2082> New exec channel created. x2go-DEBUG-../src/sshmasterconnection.cpp:2165> EOF on channel 0x7fe92e66ac60; SshProcess object: 1 x2go-DEBUG-../src/sshmasterconnection.cpp:2222> EOF sent. x2go-DEBUG-../src/sshmasterconnection.cpp:2224> Channel closed. x2go-DEBUG-../src/sshprocess.cpp:532> SSH finished: raw output (stdout): "X2GODATABEGIN:563c9735-72a3-44ce-a284-7519be6288bc X2GODATAEND:563c9735-72a3-44ce-a284-7519be6288bc " x2go-DEBUG-../src/sshprocess.cpp:538> Have stderr only, something must be wrong. x2go-DEBUG-../src/sshprocess.cpp:543> SSH finished: false - "/usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") Unable to find free display port or insert new session into database; parameters: port (50), hostname (ourdomain.edu) and session name (). " (1). x2go-DEBUG-../src/onmainwindow.cpp:5425> Agent output: "/usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") Unable to find free display port or insert new session into database; parameters: port (50), hostname (ourserver.edu) and session name (). " 2021-01-25 20:31:36.264 x2goclient[4934:264698] modalSession has been exited prematurely - check for a reentrant call to endModalSession: x2go-DEBUG-../src/onmainwindow.cpp:6771> Setting focus. On Mon, Jan 25, 2021 at 5:49 PM Ulrich Sibiller <ulrich.sibil...@gmail.com> wrote: > Well, here's the code producing that output: > > typeset -i retry='0' > typeset -i max_retry='10' > typeset output='' > for ((retry = 0; retry < max_retry; ++retry)); do > typeset -i free_port="${X2GO_PORT}" > if free_port="$("${X2GO_LIB_PATH}/x2gogetfreeport" > "${current_host_name}" "${ss}" 'display' "${X2GO_PORT}")"; then > X2GO_PORT="${free_port}" > > if [[ -n "${SHADREQ_USER}" ]]; then > > SESSION_NAME="${SHADREQ_USER}-${X2GO_PORT}-$(date '+%s')" > else > SESSION_NAME="${USER}-${X2GO_PORT}-$(date '+%s')" > fi > if [[ -n "${COLORDEPTH}" ]]; then > > SESSION_NAME="${SESSION_NAME}_st${SESSION_TYPE}${X2GO_CMD}_dp${COLORDEPTH}" > SESSION_NAME="${SESSION_NAME//:/PP}" > fi > > # sanitize session name > SESSION_NAME="$(perl -pe 's/[^a-zA-Z0-9\.\_\-\@]//g' > <<< "${SESSION_NAME}")" > > if [[ -n "${SHADREQ_USER}" ]]; then > "${X2GO_LIB_PATH}/x2gosyslog" "${0}" 'debug' > "initializing new shadow session with ID ${SESSION_NAME}" > > output="$("${X2GO_LIB_PATH}/x2goinsertshadowsession" "${X2GO_PORT}" > "${current_host_name}" "${SESSION_NAME}" "${SHADREQ_USER}")" > else > "${X2GO_LIB_PATH}/x2gosyslog" "${0}" 'debug' > "initializing new session with ID ${SESSION_NAME}" > output="$("${X2GO_LIB_PATH}/x2goinsertsession" > "${X2GO_PORT}" "${current_host_name}" "${SESSION_NAME}")" > fi > > if [[ "${output}" = 'inserted' ]]; then > break > else > "${X2GO_LIB_PATH}/x2gosyslog" "${0}" 'warning' > "unable to insert display port into database. Retrying (run $((retry + > 1)))." > fi > else > "${X2GO_LIB_PATH}/x2gosyslog" "${0}" 'warning' "no > free display number available, cannot start new session. Retrying (run > $((retry + 1)))." > fi > done > > if [[ "${output}" != 'inserted' ]]; then > typeset msg="Unable to find free display port or insert new > session into database; parameters: port (${X2GO_PORT}), hostname > (${current_host_name}) and session name (${SESSION_NAME})." > "${X2GO_LIB_PATH}/x2gosyslog" "${0}" 'err' "${msg}" > > # Make x2goclient fail. > echo "${msg}" >&2 > exit '10' > fi > > > This boils down to > > for ((retry = 0; retry < max_retry; ++retry)); do > typeset -i free_port="${X2GO_PORT}" > if free_port="$("${X2GO_LIB_PATH}/x2gogetfreeport" > "${current_host_name}" "${ss}" 'display' "${X2GO_PORT}")"; then > ... > else > "${X2GO_LIB_PATH}/x2gosyslog" "${0}" 'warning' "no > free display number available, cannot start new session. Retrying (run > $((retry + 1)))." > fi > done > > -> as you can see x2gofreeport does not seem to report the port as > free. You can try this manually: > > /usr/lib/x2go/x2gogetfreeport $(hostname) "$(which ss)" display 50 > > If that will output a free port x2go should generally work. If not, > you still have something running and blocking these ports. You can > check with lsof -i :6050 and you will see who is blocking the first > checked port. > > You can also run the x2gogefreeport with bash -x: > bash -x /usr/lib/x2go/x2gogetfreeport $(hostname) "$(which ss)" display 50 > > and see what going on. > > Hope that helps, > > Uli > > > > > On Mon, Jan 25, 2021 at 8:50 PM Robert Kudyba <rkud...@fordham.edu> wrote: > > > > I posted a similar issue back in Nov, 2020 at > https://www.mail-archive.com/x2go-dev@lists.x2go.org/msg06284.html > > > > rpm -qa|grep -i x2go > > x2goclient-4.1.2.2-3.fc33.x86_64 > > x2goserver-common-4.1.0.3-9.fc33.noarch > > perl-X2Go-Server-4.1.0.3-9.fc33.noarch > > perl-X2Go-Log-4.1.0.3-9.fc33.noarch > > perl-X2Go-Server-DB-4.1.0.3-9.fc33.x86_64 > > x2goagent-4.1.0.3-9.fc33.x86_64 > > x2goserver-xsession-4.1.0.3-9.fc33.noarch > > x2goserver-4.1.0.3-9.fc33.x86_64 > > > > nxagent -display :55 > > NXAGENT - Version 3.5.99.25 > > > > Jan 25 14:14:29 pascal /usr/bin/x2gostartagent[39654]: no free display > number available, cannot start new session. Retrying (run 1). > > Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39663]: no free display > number available, cannot start new session. Retrying (run 2). > > Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39672]: no free display > number available, cannot start new session. Retrying (run 3). > > Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39681]: no free display > number available, cannot start new session. Retrying (run 4). > > Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39690]: no free display > number available, cannot start new session. Retrying (run 5). > > Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39699]: no free display > number available, cannot start new session. Retrying (run 6). > > Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39708]: no free display > number available, cannot start new session. Retrying (run 7). > > Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39717]: no free display > number available, cannot start new session. Retrying (run 8). > > Jan 25 14:14:31 pascal /usr/bin/x2gostartagent[39726]: no free display > number available, cannot start new session. Retrying (run 9). > > Jan 25 14:14:31 pascal /usr/bin/x2gostartagent[39736]: no free display > number available, cannot start new session. Retrying (run 10). > > Jan 25 14:14:31 pascal /usr/bin/x2gostartagent[39737]: Unable to find > free display port or insert new session into database; parameters: port > (50), hostname (pascal.dsm.fordham.edu) and session name (). > > Jan 25 14:14:31 pascal kernel: kauditd_printk_skb: 21 callbacks > suppressed > > > > Let me to > https://unix.stackexchange.com/questions/467507/x2go-unable-to-find-free-display-port-or-insert-new-session-into-database > so I ran x2godbadmin --createdb > > > > Then I tried with another use and got: > > Connection failed. > > /usr/lib64/x2go/x2gocheckport: line 131: > connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in > expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") > > /usr/lib64/x2go/x2gocheckport: line 131: > connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in > expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") > > /usr/lib64/x2go/x2gocheckport: line 131: > connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in > expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") > > /usr/lib64/x2go/x2gocheckport: line 131: > connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in > expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") > > /usr/lib64/x2go/x2gocheckport: line 131: > connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in > expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") > > /usr/lib64/x2go/x2gocheckport: line 131: > connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in > expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") > > /usr/lib64/x2go/x2gocheckport: line 131: > connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in > expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") > > /usr/lib64/x2go/x2gocheckport: line 131: > connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in > expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") > > /usr/lib64/x2go/x2gocheckport: line 131: > connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in > expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") > > /usr/lib64/x2go/x2gocheckport: line 131: > connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in > expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") > > Unable to find free display port or insert new session into database; > parameters: port (50), hostname (oudomain.edu) and session name (). > > > > How does one start X2Go Windows with debug enabled? I only found for Mac > you can add the --debug flag. > > > > My colleague also had this error: > > > > > > XSession-x2go: X session started for moniot at Mon Jan 25 09:01:13 EST > 2021 > > ** Message: 09:01:15.605: couldn't access control socket: > /run/user/1200/keyring/control: No such file or directory > > SSH_AUTH_SOCK=/run/user/1200/keyring/ssh > > > > ** (mate-settings-daemon:1436112): WARNING **: 09:01:16.172: Could not > open RFKILL control device, please verify your installation > > SSH_AUTH_SOCK=/run/user/1200/keyring/ssh > > SSH_AUTH_SOCK=/run/user/1200/keyring/ssh > > vmware-user: could not open /proc/fs/vmblock/dev > > Error: /usr/bin/vmtoolsd must be run inside a virtual machine on a > VMware hypervisor product. > > SSH_AUTH_SOCK=/run/user/1200/keyring/ssh > > > > (caja:1436133): Gtk-WARNING **: 09:01:17.552: Failed to register client: > GDBus.Error:org.gnome.SessionManager.AlreadyRegistered: Unable to register > client > > *** ERROR *** > > TI:09:01:17 TH:0x56299587f960 FI:gpm-manager.c > FN:gpm_manager_systemd_inhibit,1786 > > - Error in dbus - GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: > Permission denied > > Traceback: > > mate-power-manager(+0x1d474) [0x562995487474] > > mate-power-manager(+0x136ab) [0x56299547d6ab] > > /lib64/libgobject-2.0.so.0(g_type_create_instance+0x248) > [0x7f04c0b72498] > > /lib64/libgobject-2.0.so.0(+0x19205) [0x7f04c0b58205] > > /lib64/libgobject-2.0.so.0(g_object_new_with_properties+0x1dd) > [0x7f04c0b596ad] > > /lib64/libgobject-2.0.so.0(g_object_new+0xc1) [0x7f04c0b5a331] > > mate-power-manager(+0x15f16) [0x56299547ff16] > > mate-power-manager(+0xb20a) [0x56299547520a] > > /lib64/libc.so.6(__libc_start_main+0xf2) [0x7f04c0708082] > > mate-power-manager(+0xb58e) [0x56299547558e] > > Failure: Module initialization failed > > SELinux Troubleshooter: Applet requires SELinux be enabled to run > > Initializing caja-open-terminal extension > > Initializing caja-xattr-tags extension > > Initializing caja-image-converter extension > > ICE default IO error handler doing an exit(), pid = 1436318, errno = 32 > > > > (mate-settings-daemon:1436112): GLib-GIO-WARNING **: 09:02:44.229: Error > releasing name org.mate.SettingsDaemon.Rfkill: The connection is closed > > [1611583276,000,xklavier.c:xkl_engine_start_listen/] The backend does > not require manual layout management - but it is provided by the application > > > > > > >
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