Cannot re-connect to shadow session

[stdedos]

Connected to shadow session

"Xpra-Python3-x86_64_4.1-r27002\xpra_cmd" shadow ssh://user@ip/0 --ssh="plink -ssh -agent" --env=XPRA_SHADOW_REFRESH_DELAY=200 --opengl=no --bandwidth-limit=6Mbps --desktop-scaling=0.75 --webcam=no --speaker=off --microphone=off --pulseaudio=no

Apart from seeing this abomination:

Black is out-of-monitor area, not sanitized

It seems that some mouse operations failed.
I couldn't click-drag a maximized window from DP-2 to DP-4.

So, I Ctrl+Ced it

───────┬───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
       │ File: display-:0-$TIMESTAMP.log
───────┼───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
   1   │ 2020-07-21 12:54:08,484 created unix domain socket '/run/user/1000/xpra/u-h-0'
   2   │ 2020-07-21 12:54:08,484 created unix domain socket '/run/xpra/u-h-0'
   3   │ 2020-07-21 12:54:08,567 serving html content from '/usr/share/xpra/www'
   4   │ 2020-07-21 12:54:11,594 failed to instantiate the dbus notification handler:
   5   │ 2020-07-21 12:54:11,595  org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-bBmGusrp5q: Connection refused
   6   │ 2020-07-21 12:54:11,596  disable notifications to avoid this warning
   7   │ 2020-07-21 12:54:12,595 OpenGL is supported on display ':0'
   8   │ 2020-07-21 12:54:12,595  using 'Quadro P400/PCIe/SSE2' renderer
   9   │ 2020-07-21 12:54:12,601 Warning: failed to load the mdns publisher
  10   │ 2020-07-21 12:54:12,602  No module named 'avahi'
  11   │ 2020-07-21 12:54:12,602  either install the 'python-avahi' module
  12   │ 2020-07-21 12:54:12,602  or use the 'mdns=no' option
  13   │ 2020-07-21 12:54:15,614 Error setting up server dbus instance:
  14   │ 2020-07-21 12:54:15,614   org.freedesktop.DBus.Error.NoServer
  15   │ 2020-07-21 12:54:15,614   Failed to connect to socket /tmp/dbus-c3mKqs0H8u
  16   │ 2020-07-21 12:54:15,614   Connection refused
  17   │ 2020-07-21 12:54:18,627 notification forwarding is not available
  18   │ Warning: failed to query pulseaudio using 'pactl info'
  19   │  Connection failure: Connection refused
  20   │  pa_context_connect() failed: Connection refused
  21   │ Warning: failed to query pulseaudio using 'pactl info'
  22   │  Connection failure: Connection refused
  23   │  pa_context_connect() failed: Connection refused
  24   │ 2020-07-21 12:54:19,042 GStreamer version 1.8.3 for Python 3.5.2 64-bit
  25   │ 2020-07-21 12:54:19,054 Warning: failed to query pulseaudio using 'pactl info'
  26   │ 2020-07-21 12:54:19,054  Connection failure: Connection refused
  27   │ 2020-07-21 12:54:19,054  pa_context_connect() failed: Connection refused
  28   │ 2020-07-21 12:54:22,064 Warning: cannot load dbus helper:
  29   │ 2020-07-21 12:54:22,064  org.freedesktop.DBus.Error.NoServer
  30   │ 2020-07-21 12:54:22,064  Failed to connect to socket /tmp/dbus-ZwJTcC9tyH
  31   │ 2020-07-21 12:54:22,064  Connection refused
  32   │ 2020-07-21 12:54:22,076 printer forwarding enabled using pdf and postscript
  33   │ 2020-07-21 12:54:22,076 Warning: cannot watch for application menu changes without pyinotify:
  34   │ 2020-07-21 12:54:22,076  No module named 'pyinotify'
  35   │ 2020-07-21 12:54:22,084 xpra is ready.
  36   │ 2020-07-21 12:54:22,084 xpra GTK3 shadow version 3.0.10-r26630 64-bit
  37   │ 2020-07-21 12:54:22,313  uid=1000 (u), gid=1000 (u)
  38   │ 2020-07-21 12:54:22,313  running with pid 5345 on Linux Ubuntu 16.04 xenial
  39   │ 2020-07-21 12:54:22,314  on display ':0' of size 6400x1440
  40   │ 2020-07-21 12:54:22,314  with 3 monitors:
  41   │ 2020-07-21 12:54:22,314   DP-0             2560x1440 at    0,0   
  42   │ 2020-07-21 12:54:22,314   DP-2             1920x1080 at 2560,180 
  43   │ 2020-07-21 12:54:22,314   DP-4             1920x1080 at 4480,180 
  44   │ 2020-07-21 12:54:22,456 New unix-domain connection received
  45   │ 2020-07-21 12:54:22,462  on '/run/xpra/u-h-0'
  46   │ 2020-07-21 12:54:22,634 New unix-domain connection received
  47   │ 2020-07-21 12:54:22,634  on '/run/xpra/u-h-0'
  48   │ 2020-07-21 12:54:22,636 Handshake complete; enabling connection
  49   │ 2020-07-21 12:54:23,107 New unix-domain connection received
  50   │ 2020-07-21 12:54:23,108  on '/run/user/1000/xpra/u-h-0'
  51   │ 2020-07-21 12:54:23,114 New unix-domain connection received
  52   │ 2020-07-21 12:54:23,115  on '/run/xpra/u-h-0'
  53   │ 2020-07-21 12:54:23,232 Warning: icon is quite large (273 KB):
  54   │ 2020-07-21 12:54:23,233  '/usr/share/pixmaps/com.visualstudio.code.insiders.png'
  55   │ 2020-07-21 12:54:24,019 62.7GB of system memory
  56   │ 2020-07-21 12:54:25,842 Error setting up client dbus instance:
  57   │ 2020-07-21 12:54:25,843   org.freedesktop.DBus.Error.NoServer
  58   │ 2020-07-21 12:54:25,843   Failed to connect to socket /tmp/dbus-9IBm3nORAO
  59   │ 2020-07-21 12:54:25,843   Connection refused
  60   │ 2020-07-21 12:54:25,845  automatic picture encoding enabled, also available:
  61   │ 2020-07-21 12:54:25,845   rgb24, rgb32
  62   │ 2020-07-21 12:54:25,845 Python/GTK3 Microsoft Windows 10 aero client version 4.1-r27002 64-bit
  63   │ 2020-07-21 12:54:25,845  connected from 'pc-win' as 'u' - 'u.win'
  64   │ 2020-07-21 12:54:25,847 Warning: remote clipboard request timed out
  65   │ 2020-07-21 12:54:25,847  request id 0, selection=CLIPBOARD, target=TARGETS
  66   │ 2020-07-21 12:54:25,851 shadow server: setting default keymap translation
  67   │ 2020-07-21 12:54:25,858  client root window size is 5547x1920
  68   │ 2020-07-21 12:54:25,924 client   1 @23.433 Xpra GTK3 shadow server version 3.0.10-r26630 64-bit
  69   │ 2020-07-21 12:54:25,933 client   1 @23.434  running on Linux Ubuntu 16.04 xenial
  70   │ 2020-07-21 12:54:25,933 client   1 @23.434  remote desktop size is 6400x1440
  71   │ 2020-07-21 12:54:27,390 Warning: remote clipboard request timed out
  72   │ 2020-07-21 12:54:27,390  request id 1, selection=CLIPBOARD, target=TARGETS
  73   │ 2020-07-21 12:54:27,674 Warning: request id 1 not found
  74   │ 2020-07-21 12:54:27,674  timed out already?
  75   │ 2020-07-21 12:54:27,749 Warning: not adding duplicate printer 'Send To OneNote 16'
  76   │ 2020-07-21 12:54:27,749 Warning: not adding duplicate printer 'Microsoft Print to PDF'
  77   │ 2020-07-21 12:54:27,750 Warning: not adding duplicate printer 'OneNote for Windows 10'
  78   │ 2020-07-21 12:54:38,029 client   1 @35.523 server is not responding, drawing spinners over the windows
  79   │ 2020-07-21 12:54:38,355 client   1 @35.866 server is OK again
  80   │ 2020-07-21 12:56:24,195 client   1 @21.699 server is not responding, drawing spinners over the windows
  81   │ 2020-07-21 12:56:24,553 client   1 @22.060 server is OK again
  82   │ 2020-07-21 12:56:38,271 client   1 @35.782 unknown string message: 0xc1d4 / 0xc098 / 0x0
  83   │ 2020-07-21 12:57:07,199 client   1 @04.709 unknown string message: 0xc1d4 / 0xc098 / 0x0
  84   │ 2020-07-21 12:58:36,266 client   1 @33.745 server is not responding, drawing spinners over the windows
  85   │ 2020-07-21 12:58:36,618 client   1 @34.129 server is OK again
  86   │ 2020-07-21 12:59:11,768 client   1 @09.233 server is not responding, drawing spinners over the windows
  87   │ 2020-07-21 12:59:13,126 client   1 @10.631 server is OK again
  88   │ 2020-07-21 13:09:18,359 client   1 @15.867 Python/GTK3 Client got signal SIGINT
  89   │ 2020-07-21 13:09:18,388 client   1 @15.873 exiting
  90   │ 2020-07-21 13:09:18,388 client   1 @15.877 Python/GTK3 Client got signal SIGINT
  91   │ 2020-07-21 13:09:18,389 client   1 @15.879 exiting
  92   │ 2020-07-21 13:09:18,389 client has requested disconnection: exit on signal SIGINT
  93   │ 2020-07-21 13:09:18,389 Disconnecting client /run/xpra/sntentos-precision-t3620-0:
  94   │ 2020-07-21 13:09:18,389  client request
  95   │ 2020-07-21 13:09:18,408 xpra client 1 disconnected.
  96   │ 2020-07-21 13:09:18,417 Last client has disconnected, terminating
  97   │ 2020-07-21 13:09:18,464 removing socket '/run/user/1000/xpra/u-h-0'
  98   │ 2020-07-21 13:09:18,465 removing socket '/run/xpra/u-h-0'
  99   │ xpra initialization error:
 100   │  cannot find live server for display :0
 101   │ xpra initialization error:
 102   │  cannot find live server for display :0
───────┴───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
$ xpra list
Found the following xpra sessions:
/run/user/1000/xpra:
	LIVE session at :2
/run/xpra:
	LIVE session at :2

and tried again:

"Xpra-Python3-x86_64_4.1-r27002\xpra_cmd" shadow ssh://user@ip/0 --ssh="plink -ssh -agent" --env=XPRA_SHADOW_REFRESH_DELAY=200 --title="@title@ on @@/@server-display@" --headerbar=off --opengl=no --bandwidth-limit=6Mbps --desktop-scaling=0.75 --webcam=no --speaker=off --microphone=off --pulseaudio=no

2020-07-21 13:11:29,801 Xpra GTK3 client version 4.1-r27002 64-bit
2020-07-21 13:11:29,805  running on Microsoft Windows 10
2020-07-21 13:11:30,956 GStreamer version 1.16.2 for Python 3.8.4 64-bit
2020-07-21 13:11:31,600 keyboard layout code 0x409
2020-07-21 13:11:31,601 identified as 'United States - English' : us
2020-07-21 13:11:31,901  keyboard settings: layout=us
2020-07-21 13:11:31,903  desktop size is 4160x1440 with 1 screen:
2020-07-21 13:11:31,904   Default (1100x381 mm - DPI: 96x96) workarea: 4160x1400
2020-07-21 13:11:31,904     Generic PnP Monitor 1600x900 at 0x534 (309x174 mm - DPI: 131x131) workarea: 1600x860 at 0x534
2020-07-21 13:11:31,904     C32JG5x 2560x1440 at 1600x0 (697x392 mm - DPI: 93x93) workarea: 2560x1400 at 1600x0
2020-07-21 13:11:31,904  downscaled to 75%, virtual screen size: 5547x1920
2020-07-21 13:11:31,904   Default (1100x381 mm - DPI: 128x128) workarea: 5547x1867
2020-07-21 13:11:31,905     Generic PnP Monitor 2133x1200 at 0x712 (309x174 mm - DPI: 175x175) workarea: 2133x1147 at 0x712
2020-07-21 13:11:31,905     C32JG5x 3413x1920 at 2133x0 (697x392 mm - DPI: 124x124) workarea: 3413x1867 at 2133x0
2020-07-21 13:11:35,492 Error: failed to receive anything, not an xpra server?
2020-07-21 13:11:35,493   could also be the wrong protocol, username, password or port
2020-07-21 13:11:35,493   or the session was not found
2020-07-21 13:11:35,496 Connection lost
Press any key to continue . . .

[stdedos]

Apart from what you've seen (I guess that's where ticket:2762#comment:31 comes from), this layout also:

• Triggers a variant of #2133 (I cannot right-click,minimize DP-2)

[Antoine Martin]

It's not clear to me if :2 is the session you are shadowing, or another session?

When it fails to connect to the (new?) shadow server, can you start one manually?
Do you have the server log?
Or even just this should show you something:

xpra shadow :0 --no-daemon

[stdedos]

I think this one must have been an one-off.

:2 is my usual seamless session (now stale to be debugged at some ticket ...)