Binding ctrl+shift, alt+shift, etc for switching keyboard layout makes shortcuts with ctrl+shift, etc not working in any program

User-Agent: Mozilla/5.0 (X11; Linux i686; rv:28.0) Gecko/20100101 Firefox/28.0

Let's assume for clarity that keyboard layout shortcut is set to <Ctrl+Shift>.
In previous versions of GNOME this key combination did not interfere with other hotkey combinations. But nowadays it is broken.

- Set ctrl+shift as shortcut for switching keyboard layouts
- Try to use ctrl+shift+v, ctrl+shift+c in Terminal -- it doesn't work (actually Terminal window loses focus when ctrl+shift is pressed, and layout is switched)

Steps to Reproduce (S); Actual Results (AR); Expected Results (ER)

Test case No. 1:
(S): Open gnome-terminal, type some command, try to copy the command with <Ctrl+Shift+C> and to paste it with <Ctrl+Shift+V>.
(ER): Text is copied and pasted, keyboard layout is not changed.
(AR): Text is not copied and not pasted, but keyboard layout is changed.

Test case No. 2:
(S): Open Firefox web-browser, open new tab, go to some site, close this tab, try to recover tab with <Ctrl+Shift+T>
(ER): Recently closed tab is opened, keyboard layout is unchanged
(AR): Firefox opened new tab, keyboard layout is changed

Test case No. 3:
(S): Open any text editor (gedit libreoffice Writer), type some text with several words, try to select some of that words with <Ctrl+Shift+Left Arrow> or <Ctrl+Shift+Right Arrow>
(ER): Text is selected by words, keyboard layout is not changed
(AR): Text is not selected, keyboard layout is changed

Test case No. 4:
Open Blender (see https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1245473/comments/5 for details)

Test case No. 5:
(S): Try to make a screenshot of desired window region with <Ctrl+Shift+PrintScreen>
(ER): Cursor is changed to cross, desired area is selected by user, screenshot is copied to clipboard, keyboard layout is not changed
(AR): Whole screen screenshot is saved to clipboard, keyboard layout is changed

The aforementioned test-cases works as expected on previous versions of GNOME (for example 3.4.2 in Ubuntu 12.04).

Reproducible: Always

This bug exists at least in Ubuntu (see https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1245473), RedHat 7 (https://bugzilla.redhat.com/show_bug.cgi?id=1091631), the bug is reported to upstream (https://bugzilla.gnome.org/show_bug.cgi?id=712667) with no luck.

(In reply to Alex Efros from comment #186)
> (In reply to k0fe from comment #185)
> > (In reply to Alex Efros from comment #184)
> > > There is a patch, working good enough for years without creating any new
> > > (practical) issues. In comment #161 is was proposed to make it configurable
> > > option to make everyone happy and let users choose between using compliant
> > > protocol or working hotkeys.
> >
> > Where is the link to the patch? Where is the instruction like how to apply
> > this patch? And how can this comment be used by an ordinary user (without
> > knowledge of programming) to solve this problem?
>
> As an ordinary Gentoo Linux user, I:
> - download patch attached to this issue named "The same patch, but based on
> 1.19.1 (fixed)" into directory /etc/portage/patches/x11-base/xorg-server/
> - run `emerge xorg-server` to reinstall Xorg with this patch applied
> - restart X to enjoy working hotkeys :)
>
> If users of other Linux distributions have issues with this - probably they
> just didn't use "newer Linux". </sarcasm>
I'd like to thank you! And great thanks to kyak for the patch!
I confirm that it works for me on "older" Gentoo and xorg-server 1.9.5.

There seems to have been a proposed protocol extension (comment #159 etc.) Can anyone shed light, for the outside user, as to the current status of this proposal? Thanks.

(In reply to Zebediah Figura from comment #189)
> Can anyone shed light, for the outside user, as to the current status of
> this proposal? Thanks.
No news since. Apart from the formal proposal, there are some old patches for its implementation:
https://lists.x.org/archives/xorg-devel/2012-November/034427.html
https://lists.x.org/archives/xorg-devel/2012-November/034430.html
https://lists.x.org/archives/xorg-devel/2012-November/034429.html
https://lists.x.org/archives/xorg-devel/2012-November/034431.html
https://lists.x.org/archives/xorg-devel/2012-November/034428.html

(In reply to Andreas Wettstein from comment #190)
> No news since. Apart from the formal proposal, there are some old patches
> for its implementation:
> https://lists.x.org/archives/xorg-devel/2012-November/034427.html
> https://lists.x.org/archives/xorg-devel/2012-November/034430.html
> https://lists.x.org/archives/xorg-devel/2012-November/034429.html
> https://lists.x.org/archives/xorg-devel/2012-November/034431.html
> https://lists.x.org/archives/xorg-devel/2012-November/034428.html

Here's what I think we would need to do in order to not break old clients:
https://lists.freedesktop.org/archives/xorg-devel/2013-January/035049.html

Another, probably better, way to do it would be to define a new flag like XkbSA_HasGroupFlags inside the XkbModAction flags field when group_flags and group_XXX are valid rather than potentially garbage. That would avoid the whole version-negotiation nightmare, as nothing appears to be too picky about extra flags being defined.

Five years later, it would also be good to have support inside libxkbcommon (which has a pretty decent test suite) and xcb-proto for the flags.

(In reply to Alex Efros from comment #184)
> There is a patch, working good enough for years without creating any new
> (practical) issues. In comment #161 is was proposed to make it configurable
> option to make everyone happy and let users choose between using compliant
> protocol or working hotkeys.

(In reply to Aliaksei Urbanski from comment #188)
> I'd like to thank you! And great thanks to kyak for the patch!
> I confirm that it works for me on "older" Gentoo and xorg-server 1.9.5.

I could to say, that this patch does not work exactly as expected. See, please, my comment #146 for explanation. So I think, this thread could not be closed.

Another user here voting for this bug to get patched OFFICIALLY from upstream.

Did you changed your opinion after for years of not fixing this bug?

Users still need this functionality (see https://community.ubuntu.com/t/keyboard-layout-switching-problems-and-poll/2876 and https://askubuntu.com/q/1009352/66509 as examples).

All current Ubuntu versions are affected and RHEL too. And nobody cares.

14 years of doing nothing. My congratulations!

(In reply to Daniel Stone from comment #191)
> Another, probably better, way to do it would be to define a new flag like
> XkbSA_HasGroupFlags inside the XkbModAction flags field when group_flags and
> group_XXX are valid rather than potentially garbage. That would avoid the
> whole version-negotiation nightmare, as nothing appears to be too picky
> about extra flags being defined.
>
> Five years later, it would also be good to have support inside libxkbcommon
> (which has a pretty decent test suite) and xcb-proto for the flags.

This comment lays out the best way forward for anyone interested to fix this bug. It shouldn't be too difficult, but personally I haven't worked on X11 for quite some time.

Just tested simple idea on Ubuntu 16.04.4 LTS with MATE DE.
Out-the-box it has Xorg 1.18.4 which perfectly allow user to set for example <Ctrl+Shift> keyboard shortcut for keyboard layout switching.
But when I install HWE on 16.04 LTS I get newer Xorg 1.19.5.

Debian 8 (Xorg 1.16.4) and 9 (Xorg 1.19.2) have this problem too (see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891915 ).

So versions 1.16.4, 1.19.2 and 1.19.5 should be patched to bring <Ctrl+Shift> keyboard shortcut functionality back.

Did somebody tested Russian rulemak keyboard layout? It is between the extra layouts. It is based on russian layout with latin letters. I' m not a russian man, but I think, just testing first is a good idea!

Viktor, could you please elaborate how exactly that may be useful here?

I would also like to ask you to make sure you contribute useful content to this discussion, or if you cannot, resist from posting. I don’t think it helps anyone to to support flamewars in this bug report, or even make the discussion longer than necessary.

FYI the bug may be temporarily fixed on Ubuntu 16.04 LTS (with HWE), Ubuntu 18.04 LTS (and Mint 19) using packages from my PPA ( https://launchpad.net/~nrbrtx/+archive/ubuntu/xorg-hotkeys or " ppa:nrbrtx/xorg-hotkeys " ). It contains patched Xorg (with patch from kyak - https://aur.archlinux.org/packages/xorg-server-bug865/ ). Thank you very much again, kyak!

And it is unbelievable that we need to patch core graphical system component by ourselves to use traditional keyboard shortcuts ...

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/xorg/xserver/issues/258.

Thanks for providing here attachments of Linux given and Assignee by Xorg Project Team.

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<email address hidden>: Why did you reopen this task without any comment explaining the reason? See comment 201?

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Linux Mint 21.3 XFCE -
I fully confirm the words "I used to use the Ctrl-Shift combination to switch keyboard layouts (ru <--> us)
but in this case I can't use any of the Ctrl-Shift-* hotkeys in any programme I try."