Monday, 20 May 2013

Reliable? Yes!

Last month I reported on the installation of a TP-Link TL-WN751ND wireless adapter in my mongrel 12.04 workshop setup. There's no doubt that it was a serviceable if not perfect solution to my telephone installation problems. Although I continued to experience the connection drop-outs during the period they were less frequent than with my Belkin dongle and, in defence of the card, it has provided (significantly) faster speeds.

Now that I've got my own broadband, I've had a few days to test the card on a dedicated network. Since the installation of my service, the card hasn't dropped the connection at all, so my problems on the public network were probably related to signal strength and user activity (that is, the network, not detecting any user activity, dropped the connection automatically) issues. Surprisingly, the reported speed on the private network has dropped to 65Mb/s. I say surprisingly because the wireless AP is directly above the antenna, separated from the PC by only a wooden desktop.

Nonetheless, I've decided to leave the PC on a wireless connection for now. Sure, it's probably not as fast as a physical Ethernet connection, but it is reliable and it saves using up a port on the router. If you buy sensibly (which I did not), this card offers a reliable wireless connection and I find myself recommending its use on Ubuntu machines.

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Finally!

It's been a challenging couple of weeks: the business has started (slowly) but is starting to come together. However, the hardest part of starting a business in the UK is getting a damn 'phone line installed!

After weeks of trying, I've finally had my service connected and the broadband speeds are not too shabby - 10.23Mb/s. OK, not ultra-fast, but slicker than my home service.

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  • None

Bling for 13.10?

Joey-Elijah Sneddon has reported that Chromium is the likely replacement for Firefox in the 13.10 release of Ubuntu.

I haven't used Firefox for a while: I find it slow to open and flaky to use. In fact, the only time that I use FF now is when I'm testing changes made to the Komphix website from Bluefish. I'm not sure that it will ever be my favourite browser again as it once was.

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Tuesday, 30 April 2013

The Reliable Drive & The Missing Windows

I started my journey into open-source in 2008 after the hard drive in my Windows XP machine died. Little did I know at the time that pursuing my interest in Linux would ultimately lead me to a career in IT! Nonetheless, here I sit in my workshop waiting for the telephone installation and marketing materials before I can make my first million.

Whilst sorting through some bits and pieces that I thought might come in useful for my new venture, I stumbled across that old hard drive and found myself wondering whether I could salvage any of the data. I confess that I thought it unlikely, I was certain that the drive had suffered a physical failure and wouldn't even spin up, but I thought trying might make for an interesting diversion while waiting for suppliers and customers (not necessarily in that order). Imagine my surprise then when I plugged it into my workshop pc and Ubuntu recognized it instantly.

However, whilst I could see the drive in Nautilus, I couldn't mount the file system; Ubuntu complained that Windows had not shut down properly and was corrupt. Nonetheless, a promising start!

I put the XP installation disk into the optical drive and selected the repair option from the menu. In XP, this option drops you to a command line; something Microsoft calls the Recovery Console1. From here I tried:

  1. fixmbr
  2. fixboot
with no success.

Following advice from the Ubuntu error message, I then tried chkdsk /f. Chkdsk is a utility which checks the status of the disk for errors and the f switch attempts to repair any problems the utility finds. However, although the utility ran, it failed with errors after a couple of hours and I still couldn't access any data. A second attempt also failed.

It was then that I recalled a vague reference to problems with chkdsk running on an XP SP2 installation using and XP SP1 installation disk (sorry, I can't find the reference now). My original installation was an OEM install by DELL, an XP Professional SP1a OS. Fortunately, my laptop came with XP Professional SP2, so I thought I'd give the installation disk a try.

It took several hours, but chkdsk reported that it had fixed errors on the disk. I tried booting to XP but it hung on the splash screen and, as yet, I've not been able to boot from the disk. But, I can access all of the files from Ubuntu! I've found several photographs that weren't included in my backups and that I'd thought had gone forever, so I'm pretty chuffed.

The question now is what to do with the disk. Clearly, the drive must be returned to the original PC if I'm to run XP and I can still try:

  • fixmbr
  • copy d:\i386\ntldr
  • copy d:\i386\ntdetect.com
  • bootcfg /rebuild
if I want to get XP running, but my Dimension 8400 has been running Ubuntu for five years; why would I want to regress to XP? The fact is that I achieved what I set out to achieve: access to data I thought lost.

The irony is that, had I not simply replaced my PC when the original XP installation failed, I might never have investigated Linux.

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Notes

  1. See Meyers 2012 pp.820-823

Friday, 26 April 2013

It's been coming for a while and I've dropped one or two hints over the last weeks but on next week I rejoin the world of work doing something that I've always wanted: fixing computers.

Komphix officially opens its doors to the public on Monday 29th April 2013. I hope that anyone that reads this blog (and there are one-or-two) forgive the rather gratuitous advertising and wish me luck in my new venture!

You can find out what's on offer at the new website: feel free to link ;)

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Thursday, 25 April 2013

13.04 is Here

Ubuntu 13.04 LTS is released today!

If it really is designed for lightweight devices, it might be worth trying on the workshop machine!

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The Reliable Choice & The Missing Engineer

It's probably better not to go into too much detail; suffice to say that yesterday I spent over seven hours waiting at the workshop for a telephone engineer that never appeared. I'm now told that it will be July before I get my telephone and broadband installed - now that's what I call customer service (not).

However, I can access a wireless service from the workshop using a domestic service and I have been getting an intermittent connection using a Belkin USB Network adpater that managed around 36Kb/s. It worked, but it is a painfully slow solution and the constant drop-outs did nothing to repair my temper. The solution was to install a wireless PCI in my refurbished PC: a little research indicated that I would have fewer problems if I chose a device using any of the following chipsets: Ralink (2500/RT2400), Realteck RTL8280, or Atheros (AR9170). I picked up a TP-Link TL-WN751ND adapter from my local Maplin and paid heavily (about twice the online price of c.£10.00) for my impatience.

Easy to fit (of course) and I even took some time to re-route the front umbilicals. The good news is that the adapter works out of the box on my mongrel Ubuntu 12.04 setup and delivers 72Mb/s (exactly twice the speed of the Belkin). I have experienced one drop-out since installation, but it does appear to be a significantly more stable connection and this might be the solution that gets me out of trouble.

So, my trusty mobile and new TP-Link Wireless N PCI adapter it is, at least until I can get my phone line installed. The reliable choice? I don't know, I'll have to live with it for a while; but, so far it seems like a good choice.

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