[Pkg-utopia-maintainers] Bug#457515: gnome-panel: disable hibernate when the on-disk kernel has been upgraded to a newer version

[Sjoerd Simons]

reassign 457515 pm-utils
thanks,

On Tue, Dec 25, 2007 at 08:52:38PM +0100, Michael Biebl wrote:
> Josselin Mouette schrieb:
> > reassign 457515 hal
> > thanks
> > 
> > On dim, 2007-12-23 at 11:26 +0930, Paul Wise wrote:
> >> Package: gnome-panel
> >> Version: 2.20.2-2
> >> Severity: wishlist
> >>
> >> Yesterday I upgraded my kernel and stupidly proceeded to hibernate as I
> >> was running out of power. This resulted in the new kernel being unable
> >> to load the s2disk images and them being lost. It would be nice if the
> >> gnome-panel could detect this situation (kernel upgraded without
> >> rebooting) and either prevent me from hibernating by disabling the
> >> hibernate button or by popping up an error dialog explaining the
> >> situation.
> > 
> > This would indeed be nice, but for GNOME (gnome-power-manager, actually)
> > to do that, it would need hal to report it (which in turn may need a
> > decent error message from pm-utils).
> > 
> > Reassigning to the Utopia guys, who know better how this could be done.
> > 
> 
> afaik, kernel upgrades never remove the old kernel, so it should be safe
> to hibernate, as grub allows to boot the old kernel.
> s2disk will also detect, if it finds a hibernate image file which
> doesn't match the (new) kernel and print a warning during boot.
> This allows to restart and chose the old kernel.

When i looked at pm-utils i noticed that the vanilla version changes the grub
config to _always_ boot the kernel that was used to hibernate. Afaik the debian
version doesn't do that, so on upgrade your grub config will boot a different
kernel :(..

Also pm-utils should probably refuse to hibernate when the current kernel isn't
available anymore (this will be then reported back to hal to whatever asked it
to hibernate, hopefully with a decent error message (possible localisation
issues arise though)).

  Sjoerd
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