Re: [gnome-flashback] gnome-sessions on Ubuntu 15.10+

[Alberts Muktupāvels <alberts muktupavels gmail com>]

Hi,

any chance you could get gdb output from gnome-flashback crash?

Probably easiest way:

- log into session that does work

- open terminal and run 'gdb gnome-flashback'

- set  GDK_SYNCHRONIZE environment - 'set env GDK_SYNCHRONIZE = 1'

- run it

- after crash get backtrace - 'bt'

On Mon, Dec 14, 2015 at 9:21 PM, Alkis Georgopoulos <alkisg gmail com> wrote:

I gave it a try under 16.04 by first manually running xterm from x2go, then manually setting all the appropriate environment variables like XDG_CURRENT_DESKTOP, DESKTOP_SESSION etc, and finally running:

/usr/lib/gnome-flashback/gnome-flashback-metacity --disable-acceleration-check --debug

This gave me the following (partial output), which leads me to believe that it's a xorg issue?

Maybe gnome-flashback session now requires the composite extension?


...
gnome-session-binary[18235]: DEBUG(+): App gnome-panel.desktop registered
gnome-session-binary[18235]: DEBUG(+): GsmManager: ending phase PANEL
gnome-session-binary[18235]: DEBUG(+): GsmManager: starting phase DESKTOP

gnome-session-binary[18235]: DEBUG(+): GsmManager: starting app '/org/gnome/SessionManager/App2'
gnome-session-binary[18235]: DEBUG(+): Starting app: /org/gnome/SessionManager/App2
gnome-session-binary[18235]: DEBUG(+): GsmAutostartApp: starting gnome-flashback.desktop: command=gnome-flashback startup-id=10a9a085719530afe3145012055212866100000182350001
gnome-session-binary[18235]: DEBUG(+): GsmAutostartApp: started pid:18275

(gnome-flashback:18275): Gdk-ERROR **: The program 'gnome-flashback' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadRequest (invalid request code or no such operation)'.
  (Details: serial 111 error_code 1 request_code 149 (RANDR) minor_code 25)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the GDK_SYNCHRONIZE environment
   variable to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)
gnome-session-binary[18235]: DEBUG(+): GsmAutostartApp: (pid:18275) done (signal:5)
gnome-session-binary[18235]: WARNING: Application 'gnome-flashback.desktop' killed by signal 5
gnome-session-binary[18235]: DEBUG(+): Re-starting app: /org/gnome/SessionManager/App2
...

Cheers,
Alkis
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--

Alberts Muktupāvels