[Pkg-xfce-devel] Bug#783406: Bug#783406: Bug#783406: More info

[Yves-Alexis Perez]

Control: forwarded -1
https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1454588

On mar., 2015-05-12 at 01:07 +0200, Raphaël Halimi wrote:
> Control: reassign -1 lightdm-gtk-greeter
> 
> Le 06/05/2015 08:21, Yves-Alexis Perez a écrit :
> > Then try to investigate by downgrading relevant packages (like lightdm,
> > pam modules or fprint libraries)?
> 
> I tried to downgrade lightdm to wheezy version, to no avail ; but I
> found weird that the greeter stayed the same and then I remembered that
> in lightdm the greeter is separated from the main display manager. So I
> tried to downgrade lightdm-gtk-greeter to wheezy version and the problem
> was solved.
> 
> Joining an snippet of the logs would be useless since the messages are
> strictly the same (even the gkr-pam one), but I tried my best to narrow
> down the problem nevertheless (at my humble non-dev level) by
> downloading on snapshot.debian.org every version between 1.1.6-2
> (wheezy) and 1.8.5-2 (jessie), and upgrade the package step by step.
> 
> The problem appeared with version 1.6.0-1. The weird thing (that I
> failed to notice before) is that when the syslog shows a fingerprint
> mismatch, the greeter acknowledges it (the box shakes and I'm allowed to
> retry, up to three times), but if the fingerprint matches, the greeter
> just ignores it. No shaking, no message, nothing. I just stays as it is
> instead of logging me in. It's not frozen though, since I still can
> enter a password (and then I'm able to log in).
> 
> Starting from 1.8.1, in case of mismatch, the box doesn't shake anymore,
> only the swipe prompt changes, but for for an incredibly short period of
> time, that's certainly why until now I didn't identify the exact symptom
> so precisely(I watch the syslog from another screen via ssh).
> 
> I know it's not much but I hope it helps. Also, I think this bug should
> be forwarded to upstream, since it seems to have been introduced by
> 1.6.0, which seems to have changed a lot of things (it's hard to tell
> from the upstream changelog because it rarely mentions version numbers,
> but this one introduced rounded corners, a new blue background for the
> swipe prompt, [Enter] didn't work anymore (until it was fixed later)...
> and this very bug).
> 
> Just to be sure, I tried 2.0.0 from unstable, it's even worse : in case
> of a match, the password field disappears, I have to click "Cancel" to
> be able to enter my password and log in.
> 
> I pinned 1.1.6-2 for now.
> 
I've forwarded the bug upstream, they might need more information,
especially if they don't have a way to reproduce because of lack of
fingerprint reader.

Also, when you downgrade, can you confirm you *only* downgrade the
greeter and not something else, like liblightdm-gobject?

Regards,
-- 
Yves-Alexis
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