On Thu, Nov 05, 2009 at 04:20:17PM +0100, Peter Åstrand wrote:
>
> >Hi. I'm debugging a keyboard problem where modifiers, such as
> >shift, sometimes are stuck. Unfortunately, the problem happens
> >very seldom, which
>
Nice catch, I've never reproduced original issue but it seems your
patch solves it. Please apply it to both trunk and 1_0.
Btw I think the second mieqProcessInputEvents() call in the end
of keyEvent function is not needed, is it?
Regards, Adam
> Suggested patch:
>
> Index: unix/xserver/hw/vnc/Input.cc
> ===================================================================
> --- unix/xserver/hw/vnc/Input.cc (revision 3917)
> +++ unix/xserver/hw/vnc/Input.cc (arbetskopia)
> @@ -373,6 +373,14 @@
> unsigned int i, n;
> int j, k, action;
>
> + /* + * Since we are checking the current state to determine if we
> need
> + * to fake modifiers, we must make sure that everything put on the
> + * input queue is processed before we start. Otherwise, shift may be
> + * stuck down.
> + */ + mieqProcessInputEvents();
> +
> if (keysym == XK_Caps_Lock) {
> vlog.debug("Ignoring caps lock");
> return;
> @@ -506,6 +514,15 @@
> action = down ? KeyPress : KeyRelease;
> n = GetKeyboardEvents(eventq, dev, action, kc);
> enqueueEvents(dev, n);
> + + /*
> + * When faking a modifier we are putting a keycode (which can
> + * currently activate the desired modifier) on the input
> + * queue. A future modmap change can change the mapping so
> + * that this keycode means something else entirely. Guard
> + * against this by processing the queue now.
> + */
> + mieqProcessInputEvents();
> }
>
> static KeySym KeyCodetoKeySym(KeySymsPtr keymap, int keycode, int col)
--
Adam Tkac, Red Hat, Inc.
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