Archive for the ‘News’ Category

My wishlist

May 14, 2010

I hate to register and login for several services, such as to sync my bookmarks between different desktops and hosts, emails, mobile contact list and calendar, CRM system.

If I could merge  different services into a single account with unique dashboard, I would wish to have the following:

SyncML Cellphone Contact/Calendar sync service: http://www.mobical.net
Email/Contact/Calendar: http://www.horde.org
Business-Networking: xing.de, Linkedin.com
CRM service: SugarCRM.com
Browser bookmark sync service: Xmarks.com
Chat: skype.com

Alice Mobile no voice-forward to Peru|US

March 23, 2010

Der Deutsche DSL/Mobilfunkanbieter Alice unterbindet Anrufweiterleitung in andere Länder wie Peru oder USA. beim Versuch erhalte ich “Nicht erlaubt” als Statusmeldung. Das behindert wirklich und ist eine echte Schikane. Bei Vodafone hatte ich niemals Schwierigkeiten, Anrufe auf ausländische Nummern weiterzuleiten.

Alice – slow connects

January 22, 2010

After migration to Alice-DSL I noticed slow connects in Webbrowser. It turns out that it is caused by the DNS services provided by Alice on login.

Connecting Alice provides two  DNS services. These DNS service may change the next time logging in. These  Alice-DNS services are causing way to long timeout to return with answer, in range of seconds. Way tooooo slow. Probably the ISP (Alice) is trying to slow down traffic this way.

The DSL-router itsself is also a problem.   The Alice DSL-router does not support the static DHCP-feature I am used to. This feature allows you to configure a static IP address for your notebook for your  network at home,  instead of a random IP number from DHCP pool.  This is a very nice feature I am using extensively  as it allows  to assign a well known IP numbers to my notebooks, even if it is using automatic network configuration via DHCP. Otherwise you would need to switch frequently  between  static/manual and automatic IP configuration moving you notebook between home/office and hotel.

I recommend to buy a third-party DSL router (eg. netgear) , which supports static DHCP configuration and also free choice of DNS servers, to make use of public-DNS services in the network, which will speed up webpage download a lot. Search this list of  public-DNS  services available in network
http://www.ccc.de/censorship/dns-howto/

Poulsbo & Ubuntu 9.10 (Karmic)

January 1, 2010

External display attached to Dell Inspiron Mini 10 with Ubuntu 9.10 (Karmic Koala) 

I use the Dell Inspiron Mini 10 as desktop host, with external 1440×900 display attached. Gladly this webpage explains how to get Ubuntu 9.10 run on this machine. I only had to add the monitor mode settings and modify the virtual screen size to match the size of external display.

  1. Install Ubuntu 9.10 (do not install latest updates)
  2. Download and execute the  script to install the GMA500 chip drivers as explainedsudo sh ./poulsbo_ppa.sh
  3. Change the X11 configuration file with editor:
    sudo vi /etc/X11/xorg.conf

    Section “Monitor”
      
    Identifier “Configured Monitor”
       Modeline “1440x900_60.00” 106.47 1440 1520 1672 1904 900 901 904 932 -HSync +Vsync

       Modeline “1600x900_60.00”  119.00  1600 1696 1864 2128  900 901 904 932  -HSync +Vsync
      
    Modeline “1920x1200_60.00”  193.16  1920 2048 2256 2592  1200 1201 1204 1242  -HSync +Vsync
    EndSection

    Section “Screen”
       Identifier “Default Screen”

       Monitor “Configured Monitor”
       Device “Configured Video Device”
       SubSection “Display”
           Virtual 2464 900
       EndSubSection
    EndSection

    Section “Device”
       Identifier      “GMA500”

       Option          “AccelMethod” “EXA”
       Option          “MigrationHeuristic” “greedy”
       Option          “IgnoreACPI” “yes”
       Driver          “psb”
    EndSection

    Section “DRI”
       Mode    0666

    EndSection

  4. Restart the machine, external displays of size 1440×900 (or larger) should work now. 

I also added a number of different modeline settings that might be useful if running larger external displays, such as 1600×900, or 1920×1200.
 
I used the gtf command line tool to generate the modelines:

   frehberg@naranja:~$ gtf 1440 900 60

yielding the generated modeline:

  # 1440×900 @ 60.00 Hz (GTF) hsync: 55.92 kHz; pclk: 106.47 MHz
  Modeline “1440x900_60.00”  106.47  1440 1520 1672 1904  900 901 904 932  -HSync +Vsync

Disable Lid-close event

It seems with release Ubuntu 9.10  Power-Management Preference does not provide the action “nothing” anymore, in case the laptop lid is closed. This is a pitty if you want to use the laptop with external display, and closing the lid of your laptop. This webpage gave me a hint, how to change the setting manually. I used gconf-editor to modify the settings to lid action “nothing”.

  1. ALT-F2, “gconf-editor”
  2. /apps/gnome-power-manager/buttons
  3. set “lid_ac” and “lid_battery” to value “nothing”

FAOF & SSL

October 22, 2009

Heute war ein Vortrag über FOAF&SSL in der Marienstraße, interessant aber es basiert stark auf Secure-DNS, nicht praktikabel zur Zeit.

Setup subversion server

October 16, 2009

Migrated the subversion server from old Sony notebook to new Dell Mini 10 netbook.

Linux & G500/poulsbo

October 4, 2009

Dell Mini 10 is a Linux-nightmare, but this page is quite helpful:
http://wiki.ubuntuusers.de/Grafikkarten/Intel

And Modeline needs to be added:
http://julipedia.blogspot.com/2007/03/x11-mode-line-generator.html

This is also useful:
http://www.fit-pc2.com/forum/viewtopic.php?f=9&t=768

Finally I modified /etc/X11/corg.conf the following way, to run stable and support my external screen with 1400×900 resolution:

Section “Monitor”
    Identifier “Configured Monitor”
    Modeline “1440x900_60.00” 106.47 1440 1520 1672 1904 900 901 904 932 -HSync +Vsync
EndSection
Section “Screen”
    Identifier “Default Screen”
    Monitor “Configured Monitor”
    Device “Configured Video Device”
    SubSection “Display”
        Virtual 2464 900
    EndSubSection
EndSection
Section “Device”
    Identifier “Configured Video Device”
    Option “AccelMethod” “EXA”
    Option “DRI” “off”
    Option “MigrationHeuristic” “greedy”
EndSection

Berlin Half Marathon

April 6, 2009


Yo y Lena hemos corrido el Medio Maratoniano del Berlin, Abril 5., 2009.

Ubuntu 8.10 on Medion Akoya 1210

January 24, 2009

Installation of Ubuntu 8.10 works perfectly from USB stick; I used the UNetBootin tool (https://help.ubuntu.com/community/Installation/FromUSBStick) to install the ISO image on that USB device (should be 1GB).

After the installation I changed to more compact theme “HumanCompactSmallIcons”, so the dialogs fit better onto the small netbook display (1024×600). The theme works great and can be downloaded from Martin Ankerl site http://martin.ankerl.com/2008/11/04/human-compact-themes-for-ubuntu-810/

The only thing that does not work properly is the internal webcam. Wondering, as for Ubuntu 8.04 I got it to work with patched version of the driver. Thought that would have been integrated into 8.10 in the meanwhile. I will check this out.

Note: I modified my netbook a bit, replaced the 802.11g/n by 802.11b/g WLAN device, upgarded to 2GB RAM and replaced the 80GB harddisk by MTRON-32GB-SSD (which fits just so).

Ubuntu 8.10 VPN routing via WLAN

January 24, 2009

After upgrading to Ubuntu 8.10 I was not able to ping any host via the established VPN connection to office anymore. The VPN connection succeeds but the routing of IP traffic via WLAN device to that VPN network does not work. The solution was to enable the IP traffic forwarding in /etc/syctl.conf file, changing the following options to:

#### /etc/sysctl.conf #############
# Uncomment the next line to enable packet forwarding for IPv4
net.ipv4.ip_forward=1

# Uncomment the next line to enable packet forwarding for IPv6
net.ipv6.conf.all.forwarding=1
#### end

These settings are activated on each boot. To activate the new settings at runtime wihtout booting, call command

$ sudo sysctl -p