Andrew Ferrier

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Archive for the ‘ubuntu’ tag

Huawei K4505 with Ubuntu 10.04

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I just acquired a new Vodafone Mobile Broadband modem to replace an aging ExpressCard version I had that wasn’t working too well. It came in the form of a Vodafone-branded Huawei K4505 USB stick. It didn’t work completely out-of-the-box with Ubuntu 10.04, at first appearing unrecognisable. After some hunting, I discovered that these sticks initially present themselves as USB Mass Storage to allow you to install the Windows drivers. You have to give a few magic incantations on Linux to make them switch into modem mode:

sudo aptitude install usb-modeswitch
sudo usb_modeswitch -v 0x12d1 -p 0x1521 -M \
 55534243123456780000000000000011060000000000000000000000000000

Once the modeswitch command is executed, the USB stick will present itself as a modem and you can use the standard Ubuntu NetworkManager mechanisms to define your service provider and set up the connection. The stick should remember its state, and so you should only ever need the above utility (and command) once.

Written by andrewferrier

July 30th, 2010 at 1:55 pm

Disabling Synaptics Touchpad with Ubuntu 10.04

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I recently installed Ubuntu 10.04 on my Thinkpad T61 and set about disabling the touchpad, which I always find irritating. There seemed to be lots of guides to this, including this one, but none of them seemed to work for me. Eventually I figured some fairly simple steps which did work:

  1. Install two packages if they aren’t already installed (gpointing-device-settings is the more modern version of gsynaptics and will uninstall it if it’s installed):
    sudo aptitude install xserver-xorg-input-synaptics gpointing-device-settings
  2. Start gpointing-device-settings from the command line and select “Touchpad off”, as shown here:
  3. Exit the tool and reboot.

Written by andrewferrier

June 4th, 2010 at 7:22 am

veryPC AT20

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I recently bought a veryPC AT20 as a more powerful replacement for an aging Debian-hacked NSLU2 that I had serving up files, doing backups, and other such tasks. I thought I’d do a quick review in case it’s of value to anyone considering a machine from veryPC (at the time of writing, it seems to be no longer for sale, although the veryPC AT10 looks similar).

I particularly wanted something more meaty than my NSLU2 so I could do full-disk encryption, fully-encrypted offsite backups, so it seemed ideal. The variation I ordered has:

  • Dual-Core Intel(R) Atom(TM) CPU 330 (1.6GHz)
  • 1GB RAM
  • 1TB Western Digital “GreenPower” Hard Drive
  • Intel 82945G/GZ Integrated Graphics
  • Onboard audio, 6 USB 2.0 ports, a serial port, a parallel port
  • Integrated 100MB Ethernet
  • RaLink RT2561/RT61 802.11g PCI Wireless Card
  • DVD-RW drive

(total approximately £370)

Very PC seem fairly reputable, and their customer service was adequate, if not outstanding (they didn’t keep me up-to-date on my order until I emailed them, at which point they interrupted me by calling, they didn’t always respond to sales enquiry emails, and were coy about their returns policy). Nevertheless, they do offer a 3-year warranty as standard, which shows confidence in their products.

Nevertheless, the PC arrived fairly promptly (~5 days), and appears to be robustly built: whilst compact, the case is very solid and feels strong. The whole machine exudes a feeling of high build quality, and is mostly constructed from metal rather than cheap plastic. Here’s what it looks like from the outside:

at20

The machine came shipped with Ubuntu (Desktop) pre-installed, although I rapidly reinstalled it with the Ubuntu Server (a wise decision anyway, since VeryPC forgot to include information on the default username and password!). As such, every piece of hardware works well with the exception of the wi-fi card, which, using the default driver, suffered from frequent drop-outs (a problem I’ve had before with the RaLink cards under Linux). Replacing the standard driver with a ndiswrapper verison (more information here and here) resolved this. Channels 12 and 13 also don’t seem to work correctly with this driver, so the wi-fi network has to run on another channel.

The main disappointment was the noise generated by the machine. To be fair, VeryPC described it as ‘ultra quiet’, and with other noisy items on (e.g. a modern laptop with the fan spinning), you won’t hear it. However, in an otherwise silent room, you definitely will – and you don’t have to get close to it either. I haven’t done any formal tests, but if you want a completely silent machine, this is not the one for you. If you can tolerate a small amount of fan noise in very quiet environments, it should be OK.

Another minor point: the machine has an external power supply brick (like a laptop). VeryPC didn’t make this clear, but you should factor it in if you’re considering buying one.

Otherwise, though, I’m fairly satisfied. It does what it says on the tin, I’ve had no reliability problems whatsoever (save for the wi-fi card issues mentioned above), and the machine is running 24h a day and doing a solid job. So kudos to veryPC for putting together a good bit of kit.

Written by andrewferrier

July 21st, 2009 at 10:02 pm

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Using AT&T Network Client VPN with Ubuntu 64bit

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(This post is probably of most interest to my IBM colleagues – however, since the AT&T Network Client is also available for other organisations, I’ve posted this here in case it’s of use to other folks.)

I recently installed Ubuntu 64bit (amd64) on my Lenovo Thinkpad T61. Unfortunately, the Network Client is not available in a 32bit edition. So I had to perform a few tweaks to get it to work. Here’s the steps I took:

  • Install the ia32-libs package and all it’s dependencies:
sudo apt-get install ia32-libs
  • Install the AT&T client itself (IBM colleagues can obtain this from the OCDC website):
sudo dpkg -i --force-architecture agnclient_1.0~2.0.1.3000-3_i386.deb
  • Add some symlinks:
sudo ln -s /usr/lib32/libssl.so.0.9.8 /usr/lib32/libssl.so.4
sudo ln -s /usr/lib32/libcrypto.so.0.9.8 /usr/lib32/libcrypto.so.4
  • You should now be able to start the Network Client from the Internet section of the Gnome menu, or from /opt/agns/bin/agnclient. Click Connect and enter your details as normal.

Written by andrewferrier

January 12th, 2009 at 8:34 pm

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