ctrl+alt+left+up desktop switching doesn't work

[Seth Arnold]

I filed a new bug as requested in Bug #1108342

ctrl+alt+<arrows> works for up, down, left, right, up+right, down+left, down+right. It does not work for up+left.

When I filed 1108342 I mentioned that this behaviour used to work in 12.04 LTS. I no longer have an easy way to boot 12.04 LTS on this hardware to verify that it did work, but that's the most logical release for me to have installed on this machine when it was brand new.

How do I test for the possible lack of hardware support for ctrl+alt+up+left?

Thanks

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.2.5+14.04.20150603-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-57.95-generic 3.13.11-ckt21
Uname: Linux 3.13.0-57-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.12
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CurrentDesktop: Unity
Date: Wed Aug 26 17:15:39 2015
InstallationDate: Installed on 2012-10-18 (1042 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
SourcePackage: unity
UpgradeStatus: Upgraded to trusty on 2014-04-12 (501 days ago)

[Hans Joachim Desserud (hjd)]

I also see the same behaviour (on Ubuntu 15.04).

I guess it might very well be due to hardware constraints, but I don't know how to test for that either.

[Will Cooke (willcooke)]

I now have two keyboards connected:

1 Logitech K270 wireless via a USB dongle
1 built-in Lenovo X220 laptop keyboard

My logitech one works fine, the built in one doesn't work.

Therefore this bug is the actually related to keyboard hardware and not Unity. It's weird I grant you, but there it is.

[Will Cooke (willcooke)]

I guess it could be kernel/driver related as well, but it's not unity.

[Seth Arnold (seth-arnold)]

Will, excellent. I too see an external usb keyboard works fine, built-in lenovo t530 keyboard fails. Thanks!