Keyboard Shortcuts

[Simon Colston]

Fedora Workstation 31 GNOME

My installation has a default of English (UK) but occasionally I use Japanese so I installed Japanese language support. 
When using the Japanese IME one of the keyboard shortcuts is Alt+`.  However, when I use this it brings up an 
application switch screen.

I looked through the Settings -> Devices -> Keyboard Shortcuts but there is nothing defined for Alt+`.  I also noticed 
that "Switch Application" is set to Super+Tab (which works) but Alt+Tab does the same thing even though this is not 
defined anywhere.

So my question is, how can I disable these unwanted keyboard shortcuts?

[stan]

On Fri, 22 Nov 2019 08:25:29 +0000
Simon Colston  wrote:
> Fedora Workstation 31 GNOME
>
> My installation has a default of English (UK) but occasionally I use
> Japanese so I installed Japanese language support. When using the
> Japanese IME one of the keyboard shortcuts is Alt+`.  However, when I
> use this it brings up an application switch screen.
>
> I looked through the Settings -> Devices -> Keyboard Shortcuts but
> there is nothing defined for Alt+`.  I also noticed that "Switch
> Application" is set to Super+Tab (which works) but Alt+Tab does the
> same thing even though this is not defined anywhere.
>
> So my question is, how can I disable these unwanted keyboard
> shortcuts?

From your description, it sounds like an application is grabbing these
keys, and that the application is Gnome itself.  I don't use Gnome, but
I have seen here people recommending 'Gnome tweak tool' as a way to
change Gnome options.  It might also be possible to change this in the
application itself to something else, say Ctrl+ or WinMenu+.  There is
a small chance that this is Wayland; I can't advise how to fix that as
I am unfamiliar with it, but a search should turn up options.

The above assumes that the keys aren't hard coded into the application;
that shouldn't be the case these days, but if it is, you would have to
download the src.rpm, unpack it using rpmbuild, create a patch to
override the encoded default, rebuild the binary rpm, and install it.
To prevent it from being replaced on update, you would then have to
block updates in /etc/dnf/dnf.conf.  Major hassle.

[Samuel Sieb]

On 11/22/19 12:25 AM, Simon Colston wrote:
> My installation has a default of English (UK) but occasionally I use 
> Japanese so I installed Japanese language support. When using the 
> Japanese IME one of the keyboard shortcuts is Alt+`.  However, when I 
> use this it brings up an application switch screen.
>
> I looked through the Settings -> Devices -> Keyboard Shortcuts but there 
> is nothing defined for Alt+`.  I also noticed that "Switch Application" 
> is set to Super+Tab (which works) but Alt+Tab does the same thing even 
> though this is not defined anywhere.
>
> So my question is, how can I disable these unwanted keyboard shortcuts?

I don't think you can.  They appear to be hardcoded in gnome-shell or 
mutter.  Can you change the IME shortcut?

[Simon Colston]

On 23/11/2019 15:12, stan via users wrote:
> On Fri, 22 Nov 2019 08:25:29 +0000
> Simon Colston  wrote:
> > Fedora Workstation 31 GNOME
> >
> > So my question is, how can I disable these unwanted keyboard
> > shortcuts?
>
> From your description, it sounds like an application is grabbing these
> keys, and that the application is Gnome itself.  I don't use Gnome, but
> I have seen here people recommending 'Gnome tweak tool' as a way to
> change Gnome options.  It might also be possible to change this in the
> application itself to something else, say Ctrl+ or WinMenu+.  There is
> a small chance that this is Wayland; I can't advise how to fix that as
> I am unfamiliar with it, but a search should turn up options.

I have the gnome tweak tool and it does not have an option to control these keyboard shortcuts.
> The above assumes that the keys aren't hard coded into the application;
> that shouldn't be the case these days, but if it is, you would have to
> download the src.rpm, unpack it using rpmbuild, create a patch to
> override the encoded default, rebuild the binary rpm, and install it.
> To prevent it from being replaced on update, you would then have to
> block updates in /etc/dnf/dnf.conf.  Major hassle.

Yes, major hassle.  A bit of googling with your hint that it could be Wayland and it does seem to point at Wayland being 
the problem.  No easy fixes though.

Thanks for your suggestions.

[Simon Colston]

On 23/11/2019 19:15, Samuel Sieb wrote:
> On 11/22/19 12:25 AM, Simon Colston wrote:
> > So my question is, how can I disable these unwanted keyboard shortcuts?
>
> I don't think you can.  They appear to be hardcoded in gnome-shell or mutter.  Can you change the IME shortcut?

If they are hard-coded it's probably best not to fight against it.  I can change the IME shortcut so I'll do that.

While looking into this I came across this post:
https://unix.stackexchange.com/questions/382779/how-can-i-disable-alt-tab-on...
so I installed dconf-editor and the shortcuts are there.

/org/gnome/desktop/wm/keybindings/

switch-applications     ['<Super>Tab','<Alt>Tab']
switch-group            ['<Super>Above_Tab','<Alt>Above_Tab']

Bit worried that customising it here is going to cause me problems down the road.

Thanks for helping out and I'll just change the IME shortcut.

[George N. White III]

On Sat, 23 Nov 2019 at 17:19, Simon Colston  wrote:
> On 23/11/2019 19:15, Samuel Sieb wrote:
> > On 11/22/19 12:25 AM, Simon Colston wrote:
> > > So my question is, how can I disable these unwanted keyboard shortcuts?
> >
> > I don't think you can.  They appear to be hardcoded in gnome-shell or
>
> mutter.  Can you change the IME shortcut?

https://www.beatworm.co.uk/blog/keyboards/gnome-wayland-xkb describes the
frustrations in setting up custom
mappings for gnome-wayland.
> If they are hard-coded it's probably best not to fight against it.  I can
> change the IME shortcut so I'll do that.
>
> While looking into this I came across this post:
>
> https://unix.stackexchange.com/questions/382779/how-can-i-disable-alt-tab-on...
> so I installed dconf-editor and the shortcuts are there.
>
> /org/gnome/desktop/wm/keybindings/
>
> switch-applications     ['<Super>Tab','<Alt>Tab']
> switch-group            ['<Super>Above_Tab','<Alt>Above_Tab']
>
> Bit worried that customising it here is going to cause me problems down
> the road.
>
> Thanks for helping out and I'll just change the IME shortcut.

The above link mentions: https://wiki.gnome.org/ThreePointFive/Features/IBus
where there is information on the current status of Gnome input methods and
keyboards.
> --
> Simon
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[Simon Colston]

On 24/11/2019 01:02, George N. White III wrote:
> On Sat, 23 Nov 2019 at 17:19, Simon Colston  wrote:
> > On 23/11/2019 19:15, Samuel Sieb wrote:
> > > On 11/22/19 12:25 AM, Simon Colston wrote:
> > > > So my question is, how can I disable these unwanted keyboard shortcuts?
> > >
> > > I don't think you can.  They appear to be hardcoded in gnome-shell or
> >
> > mutter.  Can you change the IME shortcut?
>
> https://www.beatworm.co.uk/blog/keyboards/gnome-wayland-xkb describes the
> frustrations in setting up custom
> mappings for gnome-wayland.

Yes that's a long way to go for the minor inconvenience I'm experiencing!
> The above link mentions: https://wiki.gnome.org/ThreePointFive/Features/IBus
> where there is information on the current status of Gnome input methods and
> keyboards.

Most of the bugs on that page were raised in 2012 and appear to be resolved/fixed.  Maybe there is not much work in this 
area at the moment.

Thanks for the info though.

[George N. White III]

On Sun, 24 Nov 2019 at 05:35, Simon Colston  wrote:
> On 24/11/2019 01:02, George N. White III wrote:
> > On Sat, 23 Nov 2019 at 17:19, Simon Colston  wrote:
> > > On 23/11/2019 19:15, Samuel Sieb wrote:
> > > > On 11/22/19 12:25 AM, Simon Colston wrote:
> > > > > So my question is, how can I disable these unwanted keyboard
>
> shortcuts?
> > > > I don't think you can.  They appear to be hardcoded in gnome-shell or
> > >
> > > mutter.  Can you change the IME shortcut?
> >
> > https://www.beatworm.co.uk/blog/keyboards/gnome-wayland-xkb describes
>
> the
> > frustrations in setting up custom
> > mappings for gnome-wayland.
>
> Yes that's a long way to go for the minor inconvenience I'm experiencing!

For me it was "Locate Pointer", but I want to understand the way wayland
alters things I was doing in X11.
> > The above link mentions:
>
> https://wiki.gnome.org/ThreePointFive/Features/IBus
> > where there is information on the current status of Gnome input methods
>
> and
> > keyboards.
>
> Most of the bugs on that page were raised in 2012 and appear to be
> resolved/fixed.

Maybe there is not much work in this area at the moment.
> Thanks for the info though.

Some open reports have recent comments, but the main point is the approach
they chose.

As for "Locate Pointer", I found:

https://blogs.gnome.org/shell-dev/2019/11/22/a-review-of-gnome-shell-mutter-...
says

'With GNOME Shell 3.34, a big coordinated effort was put in filling the
missing accessibility bits  when running a Wayland session, such as Locate
Pointer, Click Assist, among others."

It was not obvious how to enable "Locate Pointer" (the previous location
of "locate-pointer" that could be set via dconf-editor or

gsettings set org.gnome.settings-daemon.peripherals.mouse locate-pointer true

no longer exists).    "gnome-tweaks" is the new home of "Locate Pointer"
https://blogs.gnome.org/shell-dev/2019/11/22/a-review-of-gnome-shell-mutter-3-34/click-assist-menu/