Restore Session at startup

[Mike Hommey]

On Sun, Jul 12, 2015 at 08:05:31PM +0200, Nis Martensen wrote:
> Hi,
> I am running Debian stable (Jessie) and I have installed the latest
> iceweasel (release) according to mozilla.debian.net.
> Version: 39.0-1~bpo80+1
> 
> When started from the xfce panel, iceweasel always shows the following:
> 
> #  Well, this is embarrassing.
> #
> #  Iceweasel is having trouble recovering your windows and tabs.
> #  This is usually caused by a recently opened web page.
> #
> # You can try:
> #
> #    Removing one or more tabs that you think may be causing the problem
> #    Starting an entirely new browsing session
> 
> This only happens when starting from the xfce panel, not when starting
> from the menu, and not when started from the command line in a terminal.
> And it only started happening after the latest iceweasel upgrade.
> Behavior does not change when all add-ons are disabled.
> 
> What could be the reason? A difference of execution environment between
> the different invocation methods? Comparing /proc/<pid>/environ between
> "started via panel" and "started via menu" yields that the only
> difference is DESKTOP_STARTUP_ID, which is not set in the former case.
> 
> However, it is also not set in the "started from terminal" case where
> there is no problem.
> 
> I'd appreciate any ideas about how to investigate further.

Set browser.sessionstore.debug to true. Then session store message
should go in the browser console and/or stdout.

Mike