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Re: [Qemu-devel] Interpretation of key symbols in QEMU's VNC server
From: |
Gerhard Wiesinger |
Subject: |
Re: [Qemu-devel] Interpretation of key symbols in QEMU's VNC server |
Date: |
Thu, 8 Mar 2012 06:54:46 +0100 (CET) |
User-agent: |
Alpine 2.02 (LFD 1266 2009-07-14) |
Hello Fabian,
I'm having also isssues with german keymappings.
E.g. Under DOS when pressing shift keys will always be uppercase. Also
ALT-GR doesn't work.
Testcase in this order:
a => a
a => a
Shift-a => a (should be A)
a => A (should be a)
a => A (should be a)
a => A (should be a)
Shift-a => a (should be A)
a => A (should be a)
AltGr-? => ? (should be \)
So Shift states are not correctly implemented.
Also issues with CAPS-LOCK.
I'm always trying with:
QEMU started with: "-k de"
Keyboard layout in VM: de
Keyboard layout from Client OS: de
I already discussed such issues here:
https://lists.gnu.org/archive/html/qemu-devel/2010-03/msg02225.html
https://lists.gnu.org/archive/html/qemu-devel/2010-04/msg00138.html
Ciao,
Gerhard
--
http://www.wiesinger.com/
On Wed, 7 Mar 2012, Fabian Holler wrote:
Hello,
I'm not sure if I found a bug in QEMU's VNC keysymbol to scancode
mapping or if it is
a general Problem with the implemented VNC server:
Scenario:
QEMU started with: "-k de"
Keyboard layout in VM: de
Keyboard layout from Client OS: us
What i expect:
I type the '/' character on the Client OS (key left from the
right-shift-key) on US layout.
key symbol '/' is send over VNC to the QEMU.
QEMU lookup in the de keyboard mapping table for the character '/' and
should find the scancodes for the keys shift+'7'.
The Scancodes for shift and '7' are send to the VM's emulated keyboard
controller and the '/' appears in the VM.
But what actually happens is that the '7' character shows up in the VM.
It seems that QEMU misses to generates an additional Shift Scancode/Keypress.
Is this a general problem in the VNC server implementation?
So that an interpretation (http://tools.ietf.org/html/rfc6143#section-7.5.4)
of the received key symbols to eg add an additional shift keypress
isn't implemented?
If yes, would a QEMU patch that adds keysymbol interpretation have a
chance to be merged into upstream?
Or are there reasons that it isn't a good idea to interpret the
VNC keysymbols and add/remove additional needed scancodes to get the expected
character on the VM?
regards
Fabian