[SOLVED] xrdp blank screen although /etc/X11/Xwrapper.config

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[SOLVED] xrdp blank screen although /etc/X11/Xwrapper.config

Postby asimov-solensan » 2018-03-06 17:34

Hello,

Been using xrdp on debian for year and was unable to get it working. Applied this solution https://github.com/neutrinolabs/xrdp/issues/764 but stopped working after a while. Can't know if after a reboot or whatever but now I get again only a blank screen
This is clean installation of 9.3.0 and besides xrdp and ssh nothing else is changed.

There goes all the info I can provide:
/etc/X11/Xwrapper.config
Code: Select all
root@mamporrero2:/home/m1# cat /etc/X11/Xwrapper.config
# Xwrapper.config (Debian X Window System server wrapper configuration file)
#
# This file was generated by the post-installation script of the
# xserver-xorg-legacy package using values from the debconf database.
#
# See the Xwrapper.config(5) manual page for more information.
#
# This file is automatically updated on upgrades of the xserver-xorg-legacy
# package *only* if it has not been modified since the last upgrade of that
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command as root:
#   dpkg-reconfigure xserver-xorg-legacy
allowed_users=anybody
root@mamporrero2:/home/m1#
xrdpi.ini (just the default one)

[code]

[/code]root@mamporrero2:/etc/xrdp# cat xrdp.ini
[Globals]
; xrdp.ini file version number
ini_version=1

; fork a new process for each incoming connection
fork=true
; tcp port to listen
port=3389
; regulate if the listening socket use socket option tcp_nodelay
; no buffering will be performed in the TCP stack
tcp_nodelay=true
; regulate if the listening socket use socket option keepalive
; if the network connection disappear without close messages the connection will be closed
tcp_keepalive=true
#tcp_send_buffer_bytes=32768
#tcp_recv_buffer_bytes=32768

; security layer can be 'tls', 'rdp' or 'negotiate'
; for client compatible layer
security_layer=negotiate
; minimum security level allowed for client
; can be 'none', 'low', 'medium', 'high', 'fips'
crypt_level=high
; X.509 certificate and private key
; openssl req -x509 -newkey rsa:2048 -nodes -keyout key.pem -out cert.pem -days 365
certificate=
key_file=
; specify whether SSLv3 should be disabled
#disableSSLv3=true
; set TLS cipher suites
#tls_ciphers=HIGH

; Section name to use for automatic login if the client sends username
; and password. If empty, the domain name sent by the client is used.
; If empty and no domain name is given, the first suitable section in
; this file will be used.
autorun=

allow_channels=true
allow_multimon=true
bitmap_cache=true
bitmap_compression=true
bulk_compression=true
#hidelogwindow=true
max_bpp=32
new_cursors=true
; fastpath - can be 'input', 'output', 'both', 'none'
use_fastpath=both
; when true, userid/password *must* be passed on cmd line
#require_credentials=true
; You can set the PAM error text in a gateway setup (MAX 256 chars)
#pamerrortxt=change your password according to policy at http://url

;
; colors used by windows in RGB format
;
blue=009cb5
grey=dedede
#black=000000
#dark_grey=808080
#blue=08246b
#dark_blue=08246b
#white=ffffff
#red=ff0000
#green=00ff00
#background=626c72

;
; configure login screen
;

; Login Screen Window Title
#ls_title=My Login Title

; top level window background color in RGB format
ls_top_window_bg_color=009cb5

; width and height of login screen
ls_width=350
ls_height=430

; login screen background color in RGB format
ls_bg_color=dedede

; optional background image filename (bmp format).
#ls_background_image=

; logo
; full path to bmp-file or file in shared folder
ls_logo_filename=
ls_logo_x_pos=55
ls_logo_y_pos=50

; for positioning labels such as username, password etc
ls_label_x_pos=30
ls_label_width=60

; for positioning text and combo boxes next to above labels
ls_input_x_pos=110
ls_input_width=210

; y pos for first label and combo box
ls_input_y_pos=220

; OK button
ls_btn_ok_x_pos=142
ls_btn_ok_y_pos=370
ls_btn_ok_width=85
ls_btn_ok_height=30

; Cancel button
ls_btn_cancel_x_pos=237
ls_btn_cancel_y_pos=370
ls_btn_cancel_width=85
ls_btn_cancel_height=30

[Logging]
LogFile=xrdp.log
LogLevel=DEBUG
EnableSyslog=true
SyslogLevel=DEBUG
; LogLevel and SysLogLevel could by any of: core, error, warning, info or debug

[Channels]
; Channel names not listed here will be blocked by XRDP.
; You can block any channel by setting its value to false.
; IMPORTANT! All channels are not supported in all use
; cases even if you set all values to true.
; You can override these settings on each session type
; These settings are only used if allow_channels=true
rdpdr=true
rdpsnd=true
drdynvc=true
cliprdr=true
rail=true
xrdpvr=true
tcutils=true

; for debugging xrdp, in section xrdp1, change port=-1 to this:
#port=/var/run/xrdp/sockdir/xrdp_display_10

; for debugging xrdp, add following line to section xrdp1
#chansrvport=/var/run/xrdp/sockdir/xrdp_chansrv_socket_7210


;
; Session types
;

[Xorg]
name=Xorg
lib=libxup.so
username=ask
password=ask
ip=127.0.0.1
port=-1
code=20

[Xvnc]
name=Xvnc
lib=libvnc.so
username=ask
password=ask
ip=127.0.0.1
port=-1
#xserverbpp=24
#delay_ms=2000

[console]
name=console
lib=libvnc.so
ip=127.0.0.1
port=5900
username=na
password=ask
#delay_ms=2000

[vnc-any]
name=vnc-any
lib=libvnc.so
ip=ask
port=ask5900
username=na
password=ask
#pamusername=asksame
#pampassword=asksame
#pamsessionmng=127.0.0.1
#delay_ms=2000

[sesman-any]
name=sesman-any
lib=libvnc.so
ip=ask
port=-1
username=ask
password=ask
#delay_ms=2000

[rdp-any]
name=rdp-any
lib=librdp.so
ip=ask
port=ask3389

[neutrinordp-any]
name=neutrinordp-any
lib=libxrdpneutrinordp.so
ip=ask
port=ask3389
username=ask
password=ask

; You can override the common channel settings for each session type
#channel.rdpdr=true
#channel.rdpsnd=true
#channel.drdynvc=true
#channel.cliprdr=true
#channel.rail=true
#channel.xrdpvr=true
root@mamporrero2:/etc/xrdp#


sesman.ini (again default one)
Code: Select all
root@mamporrero2:/etc/xrdp# cat sesman.ini
[Globals]
ListenAddress=127.0.0.1
ListenPort=3350
EnableUserWindowManager=true
UserWindowManager=startwm.sh
DefaultWindowManager=startwm.sh

[Security]
AllowRootLogin=true
MaxLoginRetry=4
TerminalServerUsers=tsusers
TerminalServerAdmins=tsadmins
; When AlwaysGroupCheck=false access will be permitted
; if the group TerminalServerUsers is not defined.
AlwaysGroupCheck=false

[Sessions]
;; X11DisplayOffset - x11 display number offset
; Type: integer
; Default: 10
X11DisplayOffset=10

;; MaxSessions - maximum number of connections to an xrdp server
; Type: integer
; Default: 0
MaxSessions=50

;; KillDisconnected - kill disconnected sessions
; Type: boolean
; Default: false
; if 1, true, or yes, kill session after 60 seconds
KillDisconnected=false

;; IdleTimeLimit - when to disconnect idle sessions
; Type: integer
; Default: 0
; if not zero, the seconds without mouse or keyboard input before disconnect
; not complete yet
IdleTimeLimit=0

;; DisconnectedTimeLimit - when to kill idle sessions
; Type: integer
; Default: 0
; if not zero, the seconds before a disconnected session is killed
; min 60 seconds
DisconnectedTimeLimit=0

;; Policy - session allocation policy
; Type: enum [ "Default" | "UBD" | "UBI" | "UBC" | "UBDI" | "UBDC" ]
; Default: Xrdp:<User,BitPerPixel> and Xvnc:<User,BitPerPixel,DisplaySize>
; "UBD" session per <User,BitPerPixel,DisplaySize>
; "UBI" session per <User,BitPerPixel,IPAddr>
; "UBC" session per <User,BitPerPixel,Connection>
; "UBDI" session per <User,BitPerPixel,DisplaySize,IPAddr>
; "UBDC" session per <User,BitPerPixel,DisplaySize,Connection>
Policy=Default

[Logging]
LogFile=xrdp-sesman.log
LogLevel=DEBUG
EnableSyslog=1
SyslogLevel=DEBUG

[Xorg]
param=Xorg
param=-config
param=xrdp/xorg.conf
param=-noreset
param=-nolisten
param=tcp

[Xvnc]
param=Xvnc
param=-bs
param=-nolisten
param=tcp
param=-localhost
param=-dpi
param=96

[Chansrv]
; drive redirection, defaults to xrdp_client if not set
FuseMountName=thinclient_drives

[SessionVariables]
PULSE_SCRIPT=/etc/xrdp/pulse/default.pa
root@mamporrero2:/etc/xrdp#


xrdp.log
Code: Select all
[20180306-19:03:05] [INFO ] A connection received from: ::ffff:192.168.16.252 port 44206
[20180306-19:03:05] [DEBUG] Closed socket 12 (AF_INET6 ::ffff:192.168.17.19 port 3389)
[20180306-19:03:05] [DEBUG] Closed socket 11 (AF_INET6 :: port 3389)
[20180306-19:03:05] [INFO ] Using default X.509 certificate: /etc/xrdp/cert.pem
[20180306-19:03:05] [INFO ] Using default X.509 key file: /etc/xrdp/key.pem
[20180306-19:03:05] [DEBUG] Security layer: requested 3, selected 0
[20180306-19:03:06] [DEBUG] xrdp_000005a5_wm_login_mode_event_00000001
[20180306-19:03:06] [INFO ] Loading keymap file /etc/xrdp/km-00000409.ini
[20180306-19:03:06] [WARN ] local keymap file for 0x00000409 found and doesn't match built in keymap, using local keymap file
[20180306-19:03:07] [DEBUG] xrdp_wm_log_msg: connecting to sesman ip 127.0.0.1 port 3350
[20180306-19:03:07] [INFO ] xrdp_wm_log_msg: sesman connect ok
[20180306-19:03:07] [DEBUG] xrdp_wm_log_msg: sending login info to session manager, please wait...
[20180306-19:03:07] [DEBUG] return value from xrdp_mm_connect 0
[20180306-19:03:08] [INFO ] xrdp_wm_log_msg: login successful for display 11
[20180306-19:03:08] [DEBUG] xrdp_wm_log_msg: started connecting
[20180306-19:03:08] [INFO ] lib_mod_log_peer: xrdp_pid=1445 connected to X11rdp_pid=633 X11rdp_uid=1000 X11rdp_gid=1000 client_ip=::ffff:192.168.16.252 client_port=44206
[20180306-19:03:08] [DEBUG] xrdp_wm_log_msg: connected ok
[20180306-19:03:08] [DEBUG] xrdp_mm_connect_chansrv: chansrv connect successful
[20180306-19:03:08] [DEBUG] Closed socket 16 (AF_INET6 ::1 port 49308)
[20180306-19:03:08] [INFO ] The following channel is allowed: rdpdr (0)
[20180306-19:03:08] [INFO ] The following channel is allowed: rdpsnd (1)
[20180306-19:03:09] [INFO ] The following channel is allowed: cliprdr (2)
[20180306-19:03:09] [DEBUG] The allow channel list now initialized for this session
root@mamporrero2:/var/log# tail -n 200 xrdp.log


xrdp-sesman.log

Code: Select all
[20180306-19:03:07] [INFO ] A connection received from ::1 port 49308
[20180306-19:03:07] [INFO ] ++ reconnected session: username m1, display :11.0, session_pid 631, ip 0.0.0.0:44206 - socket: 12
[20180306-19:03:08] [DEBUG] Closed socket 8 (AF_INET6 ::1 port 3350)
root@mamporrero2:/var/log#


At this point I'm tired of searching, and a bit annoyed because this was astoundingly easy on debian 8, I just feel stupid at this point.

I kindly ask for some help.
Last edited by asimov-solensan on 2018-03-17 08:45, edited 1 time in total.
asimov-solensan
 
Posts: 3
Joined: 2018-03-05 19:23

Re: xrdp blank screen although /etc/X11/Xwrapper.config is s

Postby asimov-solensan » 2018-03-10 07:36

Continued checking this and with Xubuntu 17.10 I have got the same error. I wanted to test with something close to debian.
On both systems if I send a wrong password the connection fails, and I got the xrdp login screen.
So it seems that the it's accepting the connection but gets stuck at some point.
asimov-solensan
 
Posts: 3
Joined: 2018-03-05 19:23

Re: xrdp blank screen although /etc/X11/Xwrapper.config is s

Postby asimov-solensan » 2018-03-17 08:45

Ok, finally solved the problem and was network related.

I have got a virtual firewall and rules were correctly set. But for some reason the CPU was stuck at almost 100% and a huge amount of IRQ interruptions. Didn't noticed because less demanding applications worked mostly well once stopped the process I got it working.

Summary: nothing to see here.
asimov-solensan
 
Posts: 3
Joined: 2018-03-05 19:23


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