I found a new phonon-xine backend on kde-apps.org, here. I've found packages in the build service (click) and tested them. The wakeups of the whole system dropped to less than 200 wakeups per second.

During my research I stumbled over a amarok problem too. If you're playing music with amarok, it produces more than 900 wakeups, even if you stopped playing the music. The whole system should need more than 500 wakeups if you play music and browse the internet.
You have to quit the application!

UPDATE:
The bugs are fixed in KDE SVN (KDE 4.2). Thanks to Mark Kretschmann. The amarok bug for this was #177517.

I still don't know how they identify a cordless mouse connected to a receiver. The MX Revolution and the G7 share the same receiver. Yesterday I've discovered how to read the battery status from the MX and VX Revolution. I can display the battery status in percent and if the mouse is charging or is fully charged.

I've put together a proof-of-concept code here. Now it is time to think about a library, liblomoco. If someone is interested in hacking, feel free to contact me

If you have a VX Nano or G7 please send me the output of the vx_hack. If you own a G7 please send me the output of the 'lsusb' command.

More at http://www.csync.org/

               HOST            QEMU GUEST1
        +---------------+   +--------------+
        | 10.10.5.158   |   |              |
 LAN ---+---- eth0      |   |              |
        |               |   |              |    QEMU GUEST2
        |   +------+ +--+---+---- nic0     |   +--------------+
        |   | tap0---+  |   |192.168.100.5 |   |              |
        |   | tap1---+  |   +--------------+   |              |
        |   +------+ |  |                      |              |
        |     br0    +--+----------------------+---- nic0     |
        |192.168.100.254|                      |192.168.100.1 |
        +---------------+                      +--------------+

Needed packages:

tunctl (uml-utilities)
bridge-utilities
kvm

Setup the network:

Create a file call kvm-network with the following content and make it executeable.

#!/bin/bash

KVMNET_UID=1000
KVMNET_GID=$(grep kvm /etc/group | cut -d ':' -f 3)

# number of TUN/TAP devices to setup
NUM_OF_DEVICES=3

case $1 in
        start)
                modprobe kvm
                modprobe kvm_intel

                modprobe tun
                echo "Setting up bridge device br0"
                brctl addbr br0
                ifconfig br0 192.168.100.254 netmask 255.255.255.0 up
                for ((i=0; i < NUM_OF_DEVICES ; i++)); do
                        echo -n "Setting up "
                        tunctl -b -g ${KVMNET_GID} -t kvmnet$i
                        #tunctl -b -u ${KVMNET_UID} -t kvmnet$i
                        brctl addif br0 kvmnet$i
                        ifconfig kvmnet$i up 0.0.0.0 promisc
                done
                SuSEfirewall2 stop
                SuSEfirewall2
        ;;
        stop)
                for ((i=0; i < NUM_OF_DEVICES ; i++)); do
                        ifconfig kvmnet$i down
                        brctl delif br0 kvmnet$i
                        tunctl -d kvmnet$i
                done
                ifconfig br0 down
                brctl delbr br0
                SuSEfirewall2 stop
                SuSEfirewall2

                rmmod kvm_intel
                rmmod kvm
        ;;
        *)
                echo "Usage: $(basename $0) (start|stop)"
        ;;
esac

br0 is the gateway to the external network.

Setting up the firewall:

Edit /etc/sysconfig/SuSEfirewall and set the following variables:

FW_DEV_INT="br0 qtap0 qtap1 qtap2 qtap3 qtap4"
FW_ROUTE="yes"
FW_MASQUERADE="yes"
FW_MASQ_NETS="192.168.100.0/24"
FW_PROTECT_FROM_INT="no"

If you don't run a SUSE system use the following lines to setup masquerading:

echo "1" > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

On the guest you have to set the default gateway to 192.168.100.254 which is the bridge br0 and take a look in /etc/resolv.conf to get the name servers. I run a Windows 2003 Server as a guest which is the dhcp and name server for the other guests (Vista, several Linux installations).

Setting up qemu

Guest 1:

#!/bin/bash

qemu-kvm /path/to/vm.img \
          -net nic,model=rtl8139,macaddr=52:54:00:12:34:56 \
          -net tap,ifname=qtap0,script=no \
          -m 256 \
          -smp 1 \
          -usb \
          -usbdevice tablet \
          -localtime

Guest 2:

#!/bin/bash

qemu-kvm /path/to/vm2.img \
          -net nic,model=rtl8139,macaddr=52:54:00:12:34:57 \
          -net tap,ifname=qtap1,script=no \
          -m 256 \
          -smp 1 \
          -usb \
          -usbdevice tablet \
          -localtime

Note that the VMs have different MAC addresses. It took me a long time to find why I couldn't ping from one guest to another By the way, one of the guests is running Vista, which runs smoothly on my machine with KVM.

Back to WengoPhone. It has some nice new features.

• Secure voice calls using AES 128 bit encryption (Wengo <--> Wengo)
• The ability to configure a SIP account on any SIP server
• Massive stability enhancement on Mac and Linux
• Several usability improvements

WengoPhone 2.1rc1 RPMs for openSUSE 10.2 are available at Packman, here.

If you have some problems with sound, install the portaudio package from Factory. You can get it here.
Please report bugs to the ticket system at: http://dev.openwengo.com/

the Build Service uses now Novell's iChain to authenticate the user. So my home project has changed to home:gladiac and I build now all packages against the KDE:Qt project. Update you configuration for the new URL.

By the way KVIrc 3.2.5 is availiable

I want to access my calendar and addressbook from my mainframe and from my notebook. I write exams at the moment so it is the best time to do something else. I've setup a webdav to store my adressbook and calendar so I can access it with KOrganizer, Mozilla Sunbird or KAdressbook from everywhere.

First we have to create a directory for the webdav databases (lock, user).

Now we need a user

Change <username> to your user and enter a password. Now lets create the web accessible directory.

mod_dav.conf

The next step is to create a config file and add the dav modules.

Edit /etc/sysconfig/apache2 and add "dav" and "dav_fs" to the APACHE_MODULES variable. Then create a file /etc/apache2/mod_dav.conf with the following content:

<IfModule mod_dav_fs.c>
	# Location of the WebDAV lock database.
	DAVLockDB /var/lib/apache2/dav/lockdb
</IfModule>

<IfModule mod_dav.c>
	# XML request bodies are loaded into memory;
	# limit to 128K by default
	LimitXMLRequestBody 131072

	# Location of the WebDav Repository.
	Alias /webdav "/srv/www/webdav"

	<Directory /srv/www/webdav>
		# enable webdav for this directory
		Dav On
		Options +Indexes
		IndexOptions FancyIndexing
		AddDefaultCharset UTF-8
		AuthType Basic
		AuthName "WebDAV Server"
		# htpasswd2 -c /etc/apache2/dav_users.db <username>
		AuthUserFile /etc/apache2/dav_users.db
		<LimitExcept GET OPTIONS>
			Require valid-user
		</LimitExcept>
		Order allow,deny
		Allow from all
	</Directory>
</IfModule>

and include it in /etc/httpd.conf

Now you can access your webdav directory with http://domain.tld/webdav

SSL

I'm sure you want to access your server the secure way, so we need mod_ssl and a certificate. I have an CACert account so I created a real one

You have to create a CSR (Certificate Signing Request) for CACert. This file contains pieces of information about your cert and your public key.
It is used by the Certification Authority to sign your cert.

Generate an encrypted key

Type the following command to generate a private key that is file encrypted.

You will be prompted for the password to access the file and also when starting your webserver. Warning: If you lose or forget the passphrase, you must generate another certificate.
If you decide at a later stage that you would rather use an unencrypted key (cause you don't want to enter the key at boot time), you may create an unencrypted version of server.key in server.key.unsecure by executing:

Request a Server Certificate

Log in to your CACert account and post the CSR, you'll will receiver the server.crt by mail. Replace the server.key in /etc/apache2/ssl.key and server.crt in /etc/apache2/ssl.crt with your CSR and your cert.

Configure SSL

Edit in /etc/sysconfig/apache2 the add to APACHE_SERVER_FLAGS the option -DSSL. Restart your apache2 and connect e.g. with konqueror to your webdav and log in:

webdavs://domain.tld/webdav

Currently I'm working on a RPM package for WengoPhone NG. I've written some patches to build it on x86_64 and to fix some bugs to build it on SUSE. The problem is that I can't link the application at the moment cause SUSE doesn't provide libQtUiTools in their QT4 packages (SUSE LINUX 10.1 and factory). To drop it at the build service a bug fix for the boost package is needed too.

I hope that my patches will be in SVN soon and that SUSE will fix the packages. I don't want to create a fixed QT4 package