Re: [Qemu-devel] VNC key presses not correct

[Erik Rull]

> On August 23, 2013 at 7:42 AM Markus Armbruster <address@hidden> wrote:
>
>
> Anthony Liguori <address@hidden> writes:
>
> > On Aug 22, 2013 4:55 PM, "Erik Rull" <address@hidden> wrote:
> >>
> >> Markus Armbruster wrote:
> >>>
> >>> Erik Rull <address@hidden> writes:
> >>>
> >>>> Markus Armbruster wrote:
> >>>>>
> >>>>> Erik Rull <address@hidden> writes:
> >>>>>
> >>>>>> Hi all,
> >>>>>>
> >>>>>> I'm struggling with the QEMU VNC on qemu-kvm-1.2.0 a bit, the following
> >>>>>> two
> >>>>>> things are not working properly:
> >>>>>
> >>>>>
> >>>>> Have you tried to reproduce on a current version?
> >>>>>
> >>>>
> >>>> Hello Markus,
> >>>>
> >>>> yes, I was able to reproduce this with the released qemu-1.6.0 from
> >>>> the qemu-wiki website. Character mistakes are the same when opening a
> >>>> Notepad on Windows XP on the guest.
> >>>
> >>>
> >>> Thanks!
> >>>
> >>>> Maybe nobody cares because english is the layout used nearly everywhere
> >>>> :-)
> >>>
> >>>
> >>> I nobody cared, we wouldn't ship it :)
> >>>
> >>> Cc'ing Gerd, who knows more about VNC than I do.
> >>>
> >>>> And it is not related to the host operating system, I used a Debian
> >>>> 6.0 and a self built linux - both with the same effect.
> >>>> And it is not related to the VNC client, I tried several clients on
> >>>> several operating systems, all with the same result.
> >>>>
> >>>> Do you see this effect with a non-english input layout on your side, too?
> >>>> When using SDL/direct input everything is great.
> >>>
> >>>
> >>> Your initial report has details on some keypresses.  Please also tell us
> >>> your complete QEMU command line, and your complete VNC client command
> >>> line(s).
> >>>
> >>
> >> Sure, here it is:
> >> ./qemu-system-x86_64 -drive file=../../../qemu-img/windows.img,cache=off
> > -readconfig ../docs/ich9-ehci-uhci.cfg -device usb-tablet,bus=ehci.0 -boot
> > c -no-acpi -monitor telnet::5100,server,nowait -vnc :1 -m 1024 --enable-kvm
> > -cpu host
> >
> > You need to specify a keymap with -k
>
> Yes, because...
>
> >> Client is e.g. Ultra VNC 32 bit under Windows XP V 1.0.8.0 => Just enter
> > the IP::Port and connect. Or RealVNC in the same way.
> >> Client OS has german keyboard and german keyboard layout - on the QEMU
> > guest side it doesn't matter which input language is set.
> >> Guest is Windows XP SP3 32 bit.
>
> ... you use a VNC client that doesn't understand the extended key event
> extension.  The extension enables 100% faithful key interpretation, -k
> can only approximate it.
>
> https://www.berrange.com/posts/2010/07/04/more-than-you-or-i-ever-wanted-to-know-about-virtual-keyboard-handling/
>

Thanks, that's it! Updated to the latest VNC client version - works (btw.
TigerVNC crashes when sending Ctrl+Alt+Del). One thing has to be done due to the
default english keyboard layout: switch the input language on the client side to
english - then all keypresses are interpreted correctly. This is acceptable due
to the multilanguage user group of the guest and less effort than rebooting the
guest when a user with a different keyboard layout logs in :-)

Best regards,

Erik