I'm not sure if this is a cygwin problem, a gtk problem or something
else (please be gentle).
I have 3 remote machines, one running servers, one running Ubuntu 16.04
and the other 2 Debian stretch.
The Ubuntu machine has version 3.18.9 of libgtk-3 installed. The Debian
machines version 3.22.4.
I run remote applications on these machines using x11-forwarding with
ssh -Y (or putty).
I have no problem running applications on the Ubuntu machine from either
the Debian machines or windows logged in from a cygwin xterm (or putty
session).
I have no problem running applications on the Debian machines from
either the Ubuntu machine or the other Debian machine.
Remote applications on the Debian machines from a Cygwin xterm (or
putty) don't work correctly. An application (gnome-terminal and nemiver
being the two mostly use) will open correctly and keyboard is (mostly)
OK but mouse input doesn't work.
For example clicking a menu heading will place a line under the heading
in the GUI but the menu doesn't open. Note that I get the same failure
when using the keyboard shortcut keys (e.g ALT-F <> File). Sometimes a
part of the menu (maybe one or 2 lines) will appear in the top left of
the Desktop and can be scrolled through and selected using the keyboard.
The window controls (minimise, maximise, exit) work correctly.
I get (lots of ) GTK error messages in terminal like this as I try to
use the GUI:
(nemiver:6694): Gtk-WARNING **: Allocating size to gtkmm__GtkWindow
0xe42260 without calling gtk_widget_get_preferred_width/height(). How
does the code know the size to allocate?
(nemiver:6694): Gtk-CRITICAL **:
gtk_widget_get_preferred_height_for_width: assertion 'width >= 0' failed
*** BUG ***
In pixman_region32_init_rect: Invalid rectangle passed
Set a breakpoint on '_pixman_log_error' to debug
(nemiver:6694): Gtk-WARNING **: Negative content width -7 (allocation 1,
extents 4x4) while allocating gadget (node arrow, owner GtkMenu)
(nemiver:6694): Gtk-WARNING **: Negative content width -11 (allocation
1, extents 6x6) while allocating gadget (node menuitem, owner
GtkImageMenuItem)
I'v come across this bug filed against gtk in Debian which seems
somewhat similar:
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=842070>.
I'm unclear then whether this is a Debian/gtk issue or a Cywin/X issue
(given that Ubuntu->Debian is OK).
Can anyone advise wher I go from here?
--
Thanks,
David
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