[X2Go-User] accessing windows that fall off the screen

[Michael Ashley]

Hi Uli,

Thanks for this suggestion.

It turns out the session log I posted earlier (with the nxagentReconnectFailedFonts message) was the one immediately before the "disconnection after one second" problem I reported in the other thread. This earlier session resized the screen down from its original 3768x2123 dimensions. And in fact, this session *did* work, i.e., the font problem didn't cause the session to disconnect after one second. However, some of the windows did appear off the screen.

The immediately following entry in session.log is the one that had the one-second disconnect problem. This was an attempt to connect from a different computer (but one which I had been using successfully prior to the earlier entry).

To try to clear up the confusion, here is the chronological sequence of events:

 (1) Successfully running at 3768x2123 screen size using computer A.

 (2) Reconnect using computer B; nxagentReconnectFailedFonts occurs, but session OK; now running at lower screen size (1853x1145?), which causes windows to be at the edge, or beyond. The session log is the one posted in the other thread.

 (3) Attempted to reconnect with computer A;  nxagentReconnectFailedFonts occurs, and session disconnects after about 1 second. The session.log entry is in-line below;

Session: Session resumed at 'Wed Feb 24 15:38:56 2021'.
Info: Screen [0] resized to geometry [3768x2123] fullscreen [0].
Session: Suspending session at 'Wed Feb 24 15:38:58 2021'.
Info: Waiting the cleanup timeout to complete.
Session: Session suspended at 'Wed Feb 24 15:39:01 2021'.
Session: Resuming session at 'Wed Feb 24 15:39:09 2021'.
Info: Proxy running in client mode with pid '3034'.
Info: Using errors file '/tmp/.x2go-mcba/C-mcba-50-1610482047_stDXFCE_dp24/session.log'.
Info: Using stats file '/tmp/.x2go-mcba/C-mcba-50-1610482047_stDXFCE_dp24/C-mcba-50-1610482047_stDXFCE_dp24/stats'.
Loop: WARNING! Unrecognized session type 'unix-kde-depth_24'. Assuming agent session.
Warning: Unrecognized session type 'unix-kde-depth_24'. Assuming agent session.
Info: Waiting for connection from 'localhost' on socket 'tcp:*:40350'.
Info: Accepted connection from '127.0.0.1'.
Info: Connection with remote proxy completed.
Info: Using WAN link parameters 1408/24/1/0.
Info: Using agent parameters 5000/5/50/0/0.
Info: Using cache parameters 4/4096KB/8192KB/8192KB.
Info: Using pack method '16m-png-9' with session 'unix-kde-depth_24'.
Info: Using ZLIB data compression 1/1/32.
Info: Using ZLIB stream compression 1/1.
Info: Using cache file '/tmp/.x2go-mcba/C-mcba-50-1610482047_stDXFCE_dp24/cache-unix-kde-depth_24/C-2D156C878BE9F29E2E880305782DFE69'.
Info: Listening to X11 connections on display ':50'.
Info: Established X client connection.
Info: Using shared memory parameters 1/1/0/0K.
Info: Not using local device configuration changes.
nxagentReconnectFailedFonts: WARNING! Font server tunneling not retrieved.
nxagentReconnectSession: WARNING! Unable to retrieve all the fonts currently in use. Missing fonts have been replaced.
nxagentSighupHandler: WARNING! Ignoring the signal in state [SESSION_GOING_UP].
Info: keyboard blocking directory created: '/home/mcba/.x2go/C-mcba-50-1610482047_stDXFCE_dp24/keyboard'
Info: Keycode conversion is off
Info: re-reading keystrokes configuration
Warning: Cannot read keystroke file '/home/mcba/.x2go/config/keystrokes.cfg'.
Info: using keystrokes file '/etc/x2go/keystrokes.cfg'
Info: ignoring unknown keystroke action 'debug_tree'.
Info: ignoring unknown keystroke action 'regions_on_screen'.
Info: ignoring unknown keystroke action 'test_input'.
Info: ignoring unknown keystroke action 'deactivate_input_devices_grab'.
Currently known keystrokes:
  close_session         : Ctrl+Alt+t
  switch_all_screens    : Ctrl+Alt+f
  minimize              : Ctrl+Alt+m
  resize                : Ctrl+Alt+r
  defer                 : Ctrl+Alt+e
  ignore                : Ctrl+Alt+BackSpace
  force_synchronization : Ctrl+Alt+j
  fullscreen            : Ctrl+Shift+Alt+f
  viewport_move_left    : Ctrl+Shift+Alt+Left
  viewport_move_up      : Ctrl+Alt+Up
  viewport_move_right   : Ctrl+Alt+Right
  viewport_move_down    : Ctrl+Alt+Down

I notice the additional nxagentSighupHandler line.

Cheers, Michael

On Sat, Feb 27, 2021 at 12:11:48AM +0100, Ulrich Sibiller wrote:
> Press ctrl-alt-f twice (switch to fullscreen and back again), this
> should rearrange the windows. However, the same should also happen on
> reconnect so I am wondering how that situation you describe can
> occur... Can you please post a session log of such a reconnect?
> 
> Thx,
> 
> Uli
> 
> On Fri, Feb 26, 2021 at 11:42 PM Michael Ashley <m.ashley at unsw.edu.au> wrote:
> >
> > Hi folks,
> >
> > Another question for you: sometimes I reconnect to an x2go session from a computer that has a smaller display than the one that I previous connected from. The problem is that some of the windows now fall partially or fully off the display. The partial ones are usually accessible by clicking and dragging their borders until enough of them appears so that the window can be dragged back in to full view. The usual X11 keystroke/mouse combination for dragging a window isn't passed through to the x2go session, so this only works on the high-level x2go window (presumably there is a way of creating a different keystroke/mouse combination that is passed through).
> >
> > But for windows that fall completely off the screen, I can't see how to access them. Any ideas?
> >
> > I'm using xfce.
> >
> > Regards,
> > Michael
> >
> > _______________________________________________
> > x2go-user mailing list
> > x2go-user at lists.x2go.org
> > https://lists.x2go.org/listinfo/x2go-user

-- 
Professor Michael Ashley                   Department of Astrophysics
University of New South Wales       http://www.phys.unsw.edu.au/~mcba