Hello Jean-Marc. Thanks for your swift reply.
On Thu, Sep 08, 2016 at 11:35:58AM +0200, Jean-Marc wrote: > Thu, 8 Sep 2016 08:21:20 +0200 > Andreas Henriksson <andr...@fatal.se> écrivait : > > > Control: tags -1 + unreproducible moreinfo > > > > Hello Jean-Marc. > > Hi Andreas, > > > > > Thanks for your bug report. > > [...] > > I'm not able to reproduce your problem on neither of my two machines. > > Clicking on the "Displays" icon in g-c-c drives to a sub-menu where I usually > got infos on screens connected to my machines allowing to change screens' > settings. Now, I got no screens' icons at all, just a message saying it is > not posible to get screen info. > > > Could you please quote the exact message you're seeing? > > Exact message is: "Could not get screen information" Thanks. > > > Did you get any warning or error output when starting g-c-c from the command > > line? > > No message. I also started g-c-c in verbose mode but got nothing relevant. > > > Interesting. Both of them running testing/stretch I guess? > > Yes, both run the same Debian version. ... which is.... ? Stretch?! > > > > > Could you please keep a tight watch on what you're updating the coming > > days and if any of the updates makes the issue go away? If so please > > report that information back. Not all of gnome 3.21/3.22 has yet migrated > > to testing and it might be that we need a tighter dependency somewhere. > > That's the problem of running in Strech. > > Do you know which lib/sub-component g-c-c uses to get screens' info ? https://codesearch.debian.net/search?q=Could+not+get+screen+information See also: http://sources.debian.net/src/gnome-desktop3/3.21.90-3/libgnome-desktop/gnome-rr.c/?hl=993#L993 Quoting something which might be relevant: * Returns: a unique #GnomeRRScreen instance, specific to the @screen, or NULL * if this could not be created, for instance if the driver does not support * Xrandr 1.2. Each #GdkScreen thus has a single instance of #GnomeRRScreen. > It can help me to look if upgrading one or more packages from Sid solve the > problem. Are you also using the proprietary using the proprietary nvidia driver or which graphics driver are you using? Could you also please tell me exactly which version of gnome-desktop3 you have installed? dpkg -l 'libgnome-desktop-3-*' Regards, Andreas Henriksson