[X2Go-User] Resizing bug

[Kees Bakker]

On 07-05-2020 11:48, Ulrich Sibiller wrote:
> 1. well, the current source is this one:
> https://github.com/ArcticaProject/nx-libs
> 2. go to nx-X11/programs/Xserver/hw/nxagent
> 3. edit Screen.c and Window.c. find these lines right at the beginning:
> #undef TEST
> #undef DEBUG
> and change them to
> #define TEST
> #define DEBUG
>
> If you want to have really much output that tends to get overwhelming
> and unreadable you can do the same for Events.c
>
> 4. in the toplevel directory run debuild -uc -us
>
> (for other distros see README.NX-development in the toplevel directory)
>
> 5. Install the resulting packages
> 6. run you session, replicate the issue
> 7. post ~/.xg2o/<your session>/session.log (maybe strip it a bit)
>
> Please ask if you have questions/problems.
>

Thanks Uli

Here is a first set of (stripped) logs. The procedure was simple, but
is of course not 100% reproducible because the mouse movements
can be different each time. But the import condition is that the
window is only **moved** by clicking on the top bar and dragging it
somewhat to the right and a bit down. After the move, keep the mouse
down and keep it there for two or three seconds.

Three remote desktops: (standard) Ubuntu, Gnome Classic, MATE.
The remote session size is 800x600. The local desktop is 1440x900.

To start I have only grepped the lines with "nxagentChangeScreenConfig:"

In the case of MATE the bug does not show up, but in the other two
cases it does.

===============MATE====================
nxagentChangeScreenConfig: called for screen [0], width [800] height [600]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55aa1ec8be60]
nxagentChangeScreenConfig: grabstate [SERVER_GRABBED], client [(nil)]
nxagentChangeScreenConfig: Changing config to 800 x 600
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 1,56 800x600
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [600]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55aa1ec8be60]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x55aa1edd4bb0]
nxagentChangeScreenConfig: Changing config to 800 x 600
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 119,99 800x600
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [600]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55aa1ec8be60]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x55aa1edd4bb0]
nxagentChangeScreenConfig: Changing config to 800 x 600
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 300,164 800x600
nxagentChangeScreenConfig: returning [1]
===============MATE====================

===============Ubuntu===================
nxagentChangeScreenConfig: called for screen [0], width [800] height [600]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x563988763e40]
nxagentChangeScreenConfig: grabstate [SERVER_GRABBED], client [(nil)]
nxagentChangeScreenConfig: Changing config to 800 x 600
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 67,57 800x600
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [600]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x563988763e40]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x5639888ab690]
nxagentChangeScreenConfig: Changing config to 800 x 600
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 439,159 800x600
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [630]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x563988763e40]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x5639888ab690]
nxagentChangeScreenConfig: Changing config to 800 x 630
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 439,159 800x630
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [660]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x563988763e40]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x5639888ab690]
nxagentChangeScreenConfig: Changing config to 800 x 660
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 439,159 800x660
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [690]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x563988763e40]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x5639888ab690]
nxagentChangeScreenConfig: Changing config to 800 x 690
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 439,159 800x690
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [720]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x563988763e40]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x5639888ab690]
nxagentChangeScreenConfig: Changing config to 800 x 720
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 439,159 800x720
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [750]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x563988763e40]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x5639888ab690]
nxagentChangeScreenConfig: Changing config to 800 x 750
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 439,159 800x750
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [780]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x563988763e40]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x56398886cef0]
nxagentChangeScreenConfig: Changing config to 800 x 780
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 439,159 800x780
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [843]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x563988763e40]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x56398886cef0]
nxagentChangeScreenConfig: Changing config to 800 x 843
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 439,159 800x843
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [843]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x563988763e40]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x56398886cef0]
nxagentChangeScreenConfig: Changing config to 800 x 843
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 439,57 800x843
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [843]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x563988763e40]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x5639888ab690]
nxagentChangeScreenConfig: Changing config to 800 x 843
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 439,159 800x843
nxagentChangeScreenConfig: returning [1]
===============Ubuntu===================

===============Gnome Classic================
nxagentChangeScreenConfig: called for screen [0], width [800] height [600]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55efc5939ee0]
nxagentChangeScreenConfig: grabstate [SERVER_GRABBED], client [(nil)]
nxagentChangeScreenConfig: Changing config to 800 x 600
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 0,65 800x600
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [600]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55efc5939ee0]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x55efc5a96170]
nxagentChangeScreenConfig: Changing config to 800 x 600
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 205,132 800x600
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [637]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55efc5939ee0]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x55efc5a96170]
nxagentChangeScreenConfig: Changing config to 800 x 637
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 205,132 800x637
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [674]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55efc5939ee0]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x55efc5a96170]
nxagentChangeScreenConfig: Changing config to 800 x 674
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 205,132 800x674
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [711]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55efc5939ee0]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x55efc5a96170]
nxagentChangeScreenConfig: Changing config to 800 x 711
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 205,132 800x711
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [748]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55efc5939ee0]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x55efc5a96170]
nxagentChangeScreenConfig: Changing config to 800 x 748
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 205,132 800x748
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [785]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55efc5939ee0]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x55efc5a96170]
nxagentChangeScreenConfig: Changing config to 800 x 785
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 205,132 800x785
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [801]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55efc5939ee0]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x55efc5a96170]
nxagentChangeScreenConfig: Changing config to 800 x 801
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 205,132 800x801
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [801]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55efc5939ee0]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x55efc5a96170]
nxagentChangeScreenConfig: Changing config to 800 x 801
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 205,65 800x801
nxagentChangeScreenConfig: returning [1]
nxagentChangeScreenConfig: called for screen [0], width [800] height [801]
nxagentChangeScreenConfig: screenInfo.screens[0]->root [0x55efc5939ee0]
nxagentChangeScreenConfig: grabstate [SERVER_UNGRABBED], client
[0x55efc5a96170]
nxagentChangeScreenConfig: Changing config to 800 x 801
nxagentChangeScreenConfig: Xinerama is disabled
nxagentChangeScreenConfig: current geometry: 205,132 800x801
nxagentChangeScreenConfig: returning [1]
===============Gnome Classic================
-- 
Kees