Lost keyboard events after starting DBUS

[Peter Åstrand]

> After executing:
>
> eval `dbus-launch --sh-syntax --exit-with-session`
>
> in a xterm window, then keyboard events are occasionally lost. If you type, 
> say, 1234567890, you will actually end up with something like 12356890. It's

The problem is actually not limited to Xvnc, I've been able to reproduce 
it on a wide range of Xservers and platforms:

TigerVNC, X.Org 1.5.3: fails
xorg-x11-server-Xvfb-1.6.1-6.fc11.x86_64: fails
xorg-x11-server-Xvfb-1.5.3-15.fc10.i386: fails
xorg-x11-server-Xvfb-1.5.2-6.fc9.x86_64: fails (many events lost)
xorg-x11-server-Xorg-1.6.0-16.fc11.x86_64: fails
xorg-x11-server-Xorg-1.5.2-6.fc9.x86_64: fails
xorg-x11-server-Xorg-1.3.0.0-47.fc8: fails

In the Xvfb case, I was simulating keypresses using XSendEvent. If you 
want to try this yourself, it's quite simple:

1. Login on the console, or unset XAUTHORITY.

2. xinit -- :47

3. eval `dbus-launch --sh-syntax --exit-with-session`

4. Start typing,

It seems like the rate of lost keys is basically one per second: By typing 
one character per second, the problem is most easily triggered.

Using Wireshark, I've seen that all KeyPress events are actually delivered 
to the application. It happens with both xterm and gnome-terminal, both 
with bash and csh. I guess what's left is either:

1) A bug that's present in both xterm and gnome-terminal (seems unlikely)

or

2) Some kind of bug in libX11


Best regards, 
---
Peter Åstrand		ThinLinc Chief Developer
Cendio AB		http://www.cendio.com
Wallenbergs gata 4
583 30 Linköping	Phone: +46-13-21 46 00