Posts for Tag: timezone

Thinkpad X250 - Debian (cont'd)

After my original effort to get Debian to play nice on the X250 there were still a handful of things which weren't right. This mostly covers the remainder of the things that I had trouble with.

Automatically updating timezone based on location

I was recently in Vietnam and had to update my timezone manually - which was a minor inconvenience. There's an app called tzupdate which will attempt to determine your location and update the timezone accordingly whenever you run it. We can create a cron job to run tzupdate regularly to ensure the timezone is updated:

    $ sudo pip install -U tzupdate
    $ sudo crontab -e

enter the following - it'll cause tzupdate to run on the hour, every hour

    0 * * * * tzupdate

Two-fingered scroll left/right

When setting up my touchpad I neglected to setup the left/right scrolling - adding the followng line to /etc/X11/xorg.conf.d/50-synaptics.conf resolves this:

    Option "HorizTwoFingerScroll" "1"

For more info on the Synaptics touchpad driver, as always ArchLinux has some excellent documentation on the subject.

iPhone - Bluetooth and USB tethering 

Connecting over bluetooth is a little funny and can trouble you in unpredictable ways. Basically network manager overwrites /etc/resolv.conf when it connects/disconnects from a network and blueman doesn't touch it. So as you connect/disconnect from networks your bluetooth connection can be effectively useless as it'll be unable to resolve DNS queries (I'm guessing most people go to and not

Easiest way is to prevent network manager from touching resolv.conf - and make sure you have a handful of good nameservers you can rely on. To do this edit /etc/NetworkManager/NetworkManager.conf and add the following to the [main] section:


Then add a handful of dns services to  /etc/resolv.conf:

    $ cat > /etc/resolv.conf << RESOLVEND
    #Google Public DNS
    # OpenDNS

Connecting over USB is a little easier

    $ sudo modprobe ipheth

If you're having trouble then apparently ipheth sometimes requires the iphone filesystem to be mounted - which means installing ifuse:

    $ sudo apt-get install libimobiledevice-dev libfuse-dev
    $ git clone
    $ cd ifuse/
    $ ./ && ./configure && make && sudo make install
    $ mkdir ~/iPhone && sudo ifuse ~/iPhone

Thinkpad X250's Mobile Broadband setup (Vodafone CZ)

I had a bit of a nightmare of a time connecting to Vodafone using the builtin 4G modem. I think the main thing is that most places on the internet say that for pre-paid SIM you should set the APN to "ointernet" - when actually "internet" is correct. However I did find that I needed to set prefer_mbim to Y for the device:

    $ sudo echo "options cdc_ncm prefer_mbim=Y" >> /etc/modprobe.d/cdc_ncm.conf
You can either setup the connection using the NetworkManager UI and make it match the below:
... or manually create a file in /etc/NetworkManager/system-connections/ like the below:
    $ sudo cat /etc/NetworkManager/system-connections/Vodafone\ CZ
    id=Vodafone CZ




XTerm looks weird in XFCE

I've since moved nearly full-time to using Xmonad, but when I go back to XFCE and try to use xterm it has an extremely tiny font:

To make them appear a little nicer we need to edit ~/.Xresources - so that it looks like the below

Then fix up .Xresources:

    $ cat .Xresources 
    XTerm*faceName: Source Code Pro
    XTerm*faceSize: 10
    XTerm*metaSendsEscape: true
    ! Fonts {{{
    Xft.antialias: true
    Xft.hinting:   true
    Xft.rgba:      rgb
    Xft.hintstyle: hintfull
    Xft.dpi:       120
    ! }}}

After you restart X and relaunch an xterm everything should appear little nicer