[Pkg-xfce-devel] Bug#655765: Bug#655765: Panel moves when enabling second display, but doesn't move back when disabling

Yves-Alexis Perez corsac at debian.org
Mon Jan 16 06:23:24 UTC 2012

reassign 655765 grandr
On lun., 2012-01-16 at 01:53 +0000, Wookey wrote:
> +++ Yves-Alexis Perez [2012-01-14 10:40 +0100]:
> > How exactly do you enable/disable the external display? Because here,
> > nothing happens if I only plug it, so I have to run xrandr --auto.
> > Similar, when I unplug it, I need to do xrandr --auto to disable the
> > external output. At that point, the bottom panel is perfectly located on
> > the bottom of my laptop display.
> OK. I used grandr.
> I have LVDS1, natural resolution 1440x900 (Lenovo x200s), and VGA1
> giving many option. max of 1280x1024.
> So, yes, I agree that unplugging the external display and running
> xrandr --auto gets the panel bar back at the bottom of LVDS1.
> Leaving it plugged in and doing xrandr --output VGA1 --off also
> returns the panel to the bottom.
> However using grandr:
> click on 'VGA1' to select it. untick 'off', select max resolution of
> 1280x1024 and click 'apply', and external display is enabled, panel
> moves to bottom of it. 
> Now tick 'Off' and 'apply' and external display is turned off, but
> panel remains at '-1024' and thus not visible on LVDS1
> quitting grandr and running "xrandr --output VGA1 --off" at this point
> prings the panel back to '-900' and visibility.
> So I guess I have a workaround now, and perhaps this is a bug in
> grandr, rather than xfce4-panel?
> It seems that turning 'VGA1' 'off' in grandr is not the same as
> running xrandr --output VGA1 --off. 

Yup, reassigning then
> > > It would be good if the panel noticed these changes in both directions
> > > and calulated its best position whever a screen is added or removed,
> > > in order to keep itself visible on screens that are currently in use. 
> > 
> > Afaict it's already the case.
> It is using xrandr, but not grandr. 
> Do you find the same as me?
> I see that grandr has now been removed from unstable and testing as
> 'better alternatives are available'.
> Looking at what these might be for xfce I find that the 'display'
> settings app has equivalent functionality for turning on/off displays,
> and turning the external display on/off with that does indeed have the
> panel moving as desired.
> So it seems this bug boils down to 'user still using outdated and now
> buggy display control app'. 
> However 'display' does not have the grandr functionality for putting
> screens side-by-side rather than simply cloning. Do you know what tool
> one is expected to use for this these days? Without a replacement for
> this grandr still has utility.
Yeah, in 4.8 you can't really do this from the settings (I'm not sure
but I think in 4.10 you will). I usually only use xrandr, but  I think
arandr and lxrandr do the job pretty fine so it'd be worth trying them.

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