Technology Tales

Installing a Windows 7 release candidate and fixing concomitant Kaspersky errors

Now that the Release Candidate for Windows 7 is out, I have been giving it a whirl in a VirtualBox session and it, like the Beta that I had been trying too, feels a sold enough affair. I went for the complete installation route in place of the upgrade path. One surprise was that it bundled my old files into a single folder called Windows_old, and that my old user bits and bobs were folded in with this too. Even though there was nothing there that I wouldn't have missed, this still is a nice touch.

However, I have a spot of fixing to do after adding Kaspersky Internet Security 2009. Like the beta, mixing Windows 7 and Kaspersky seems not to be the way to a stable system. Whether this is down to the virtualisation aspect of the business is something that I don't know, but I have found that removing Kaspersky and replacing it made everything sing along together. Booting into Safe Mode and using msconfig to remove any incidences of Kaspersky being called at start up provides a partial restoration of service. Because the msiexec service isn't running, you need full mode before any software but pulling out any cause for execution of Kaspersky gets that back. While I suppose that I could go and put Windows 7 on a real machine to see if Kaspersky causes problems there, that's not a road that I really want to travel at this time.

Where's WordPress 2.8?

It now seems that WordPress 2.7 has been an unqualified success. The major changes that were made to the administration screens have been well received, and the grumblings that were extant about 2.5 and 2.6 seem to have dissipated too. Another observation is that security bugs have not been making their presence felt. All in all, it feels very much like assured progress and may explain why 2.8 has been taking its time in coming.

It's now pencilled in for the end of this month and looks as if it will be a polishing of what already works well. It seems to me that most of the changes are behind the scenes, but there is a new widgets interface that should be ever more user-friendly together with an automated theme installation and upgrade facility that is based on what is already in place for plugins (speaking of which, that interface has been tidied too). Another rough edge that has been removed is the whole business of time zones and daylight saving time. In summary, it seems to be a sharpening of a package that already works well anyway. I have been running it on another site without a whimper of drama, so that's probably saying something. Saying that, quite how they are going to get anyone to upgrade is another matter. For one thing, Lorelle VanFossen's overuse of the word "mandatory" cannot be likely to do it...

In a way, the subject of upgrade fatigue brings me to a recent poll run by Automattic's Jane Wells. Quite a number want to stick with what works, while others fancy a change. This split could be tricky to manage and might even encourage some not to upgrade at all and stick with what works for them. After all, there were two episodes of major upheaval last year and I cannot see everyone wishing to see that happen again. Continual evolutionary freshening would suit me better. Thankfully, any talk of changing the administration screens has been left for 2.9 now, and there's always the option of sticking with 2.8 if what is produced becomes a sufficient irritation. Well, it saves a leap to Habari or another alternative anyway...

Taming raw images with ImageMagick: A virtual workaround for Ubuntu 9.04

While using a command line tool like ImageMagick for image processing may sound a really counter-intuitive thing to do, there's no need to do everything on a case by case interactive basis. Image resizing and format conversion come to mind here. Helper programs are used behind the scenes too, with Ghostscript being used to create Postscript files, for example.

The subject of helper programs brings me to an issue that has hampered me recently. While I am aware that there are tools like F-Spot available, I am also wont to use a combination of shell scripting (BASH & KSH), Perl and ImageMagick for organising my digital photos. My preference for using Raw camera files (DNG & CRW) means that ImageMagick cannot access these without a little helper. In the case of Ubuntu, it's UFRaw. However, Jaunty Jackalope appears to have seen UFRaw updated to a version that is incompatible with the included version of ImageMagick (6.4.5 as opposed to 3.5.2 at the time of writing). The result is that the command issued by ImageMagick to UFRaw - issue the command man ufraw-batch to see the details - is not accepted by the included version of the latter, 0.15 if you're interested. It appears that an older release of UFRaw accepted the output device ppm16 (16-bit PPM files) but this should now be specified as ppm for the output device and 16 for the output depth. In a nutshell, where the parameter output-type did the lot, you now need both output-type and output-depth.

While I thought of decoupling things by using UFRaw to create 16-bit PPM files for processing by ImageMagick, it was to no avail. The identify command wouldn't return the date on which the image was taken. Though I even changed the type to 8-bit JPEG's with added EXIF information, no progress was made. In the end, a mad plan came to mind: creating a VirtualBox VM running Debian. The logic was that if Debian deserves its reputation for solidity, dependencies like ImageMagick and UFRaw shouldn't be broken, and I wasn't wrong. To make it work well, I needed to see if I could get Guest Additions installed on Debian. Out of the box, the supported kernel version must be at least 2.6.27 and Debian's is 2.6.26, so additional work was on the cards. First, GCC, Make and the correct kernel header files need to be installed. Once those are in place, the installation works smoothly and a restart sets the goodies in motion. To make the necessary shared folder to be available, a command like the following was executed:

mount -t vboxfs [Shared Folder name] [mount point]

Once that deed was done and ImageMagick instated, the processing that I have been doing for new DSLR images was reinstated. Ironically, Debian's version of ImageMagick, 6.3.7, is even older than Ubuntu's, but it works and that's the main thing. Since there is an Ubuntu bug report for this on Launchpad, I hope that it gets fixed at some point in the near future. However, that may mean awaiting 9.10 or Karmic Koala, so I'm glad to have this workaround for now.

Ubuntu 9.04 and Tracker

Shortly after it was released, I did the upgrade shuffle very painlessly, and it didn't take up so much time either. There was only one issue: Tracker falling over, complaining about corrupted indices. That got it removed from my system using apt-get remove (apt-get purge is another option, especially if you need to rid yourself of nefarious configuration files). After having a bit of a dig around the web, I found that I wasn't the only one seeing the problem. To me, it looks as if the upgrade to 9.04 doesn't work so well when it comes to Tracker, and it needs to be removed and reinstalled to ensure that all required dependencies are correctly set in place. Since I restored it on my system, all is working without complaint. Other than the Tracker issue, it has been a case of another uneventful upgrade. Though the evolutionary path that Ubuntu is following may disappoint anyone looking for excitement, no one would upgrade every six months if they knew that disruptive damage or upheaval might be caused. While I may do a clean installation at some point, that is well down the priority list right now.

When web hosting limits become too restrictive

Fasthosts has, in their wisdom, decided to limit the execution time for ASP scripts to 15 seconds and 10 seconds for any others. I haven't used Perl sufficiently in this shared hosting set up to determine how that is affected. In contrast, I can share my experiences on the PHP side and you may have noticed occasional glitches. They have also disabled the set_time_limit PHP function, so you cannot easily address the matter yourself where you need to do it. You almost get the feeling that they don't trust the abilities, actions and oversight of their users. Personally, I reckon that the ten-second limit is too short and that something of the order of 20 or 30 seconds would be better. If it all gets too restrictive, I suppose that there are other providers, though I think that I would avoid resellers after a previous less than glorious experience. There's the dedicated server option too if I was feeling flush, not so likely given the economic times in which we live.

Self-hosted web analytics tracking

It amazes me now to think how little tracking I used to do on my various web "experiments" only a few short years ago. However, there was a time when a mere web counter, perhaps displayed on web pages themselves, was enough to yield some level of satisfaction, or dissatisfaction in many a case. Things have come a long way since then, and we now seem to have analytics packages all around us. In fact, we don't even have to dig into our pockets to get our hands on the means to peruse this sort of information, either.

At this point, I need to admit that I am known to make use of a few simultaneously but thoughts about reducing their number are coming to mind, but there'll be more on that later. Given that this site is hosted using WordPress software, it should come as no surprise that Automattic's own plugin has been set into action to see how things are going. The main focus is on the total number of visits by day, week and month, with a breakdown showing what pages are doing well, together with an indication of how people came to the site and what links they followed while there. Don't go expecting details of your visitors like the software that they are using and the country where they are accessing the site with this minimalist option and satisfaction should head your way.

There is next to no way of discussing the subject of website analytics without mentioning Google's comprehensive offering in the area. You have to admit that it's comprehensive, with perhaps the only bugbear being the lack of live tracking. That need has been addressed very effectively by Woopra, even if its WordPress plugin will not work with IE6. Otherwise, you need the desktop application (being written in Java, it's a cross-platform affair and I have had it going in both Windows and Linux) but that works well too. Apart maybe from the lack of campaigns, Woopra supplies as good as all the information that its main competitor provides. It certainly does what I would need from it.

However, while they can be free as in beer, there are some costs associated with using external services like Google Analytics and Woopra. Their means of tracking your web pages for you is by executing a piece of JavaScript that needs to be added to every page. If you have everything set to use a common header or footer page, that shouldn't be too laborious, especially when there are plugins for publishing platforms like WordPress too. This way of working means that if anyone has JavaScript disabled or decides not to enable JavaScript for the requisite hosts while using the NoScript extension with Firefox, then your numbers are scuppered. Saying that, the same concerns probably any JavaScript code that you may want to execute, but there's another cost again: the calls to external websites can, even with the best attention in the world, slow down the loading of your own pages. When you add in latency caused by servers having to communicate across the web, it is not all about executing JavaScript code.

A self-hosted analytics package would avoid the latter, and I found one recently through Lifehacker: Piwik, formerly known as PHPMyVisites. Usefully, it turns out that it does next to everything that Google Analytics does. While I'd prefer that it used PHP for this, JavaScript is its means of tracking web pages too. Nevertheless, page loading is still faster than with Google Analytics and/or Woopra and Firefox/NoScript users would only have to allow JavaScript for one site too. If you have had experience with installing PHP/MySQL-powered publishing platforms like WordPress, Textpattern and such like, then putting Piwik in place is no ordeal. Though, you may find yourself changing folder access, uploading of the required files, the specification of database credentials and adding an administration user is all fairly standard stuff. After all that, I have the thing tracking this edifice as well as my outdoor activities (hillwalking/cycling/photography) web presence and I cannot say that I have any complaints, so we'll see how it goes from here.

Pondering a potential feature request for Textpattern article filtering

Having been doing some updates to articles in A Wanderer's Miscellany, an idea that makes life easier when working in Textpattern with old articles has come to mind. Currently, there is no way to navigate through pages in the administration area other than using the search or previous/next functionality. Thus, I have started thinking that being able to subset articles by section or category using dropdown menus would be a good way forward.

A search for a suitable plugin yielded nothing of immediate use (amazingly, no one has given it a go thus far); hence the thinking regarding a new feature request. Because there is a place on the Txp support forum for exactly this kind of thing, I am in the throes of plucking up the courage to go for it. Apparently, some code cutting of my own would grease the wheels for the progression of any such thing; a lack of confidence in that area could reduce my input to a bare feature request. While moving to an alternative platform might be an alternative proposition, I see little reason in doing so when what I have otherwise works well for what I want it to do. That Textpattern feature request might just come into being...

/sbin/mount.vboxsf: mounting failed with the error: Protocol error

These days, my virtualisation needs are being well served by VirtualBox 2.2. Though it may be the closed source variant, I have no complaints about it. Along with a number of Windows VM's, I also have one running Ubuntu 9.04 and, for the first time, I seem to have VirtualBox's Guest Additions playing with a Linux guest as they should. Even the Shared Folders functionality is working.

However, I did get one problem when I tried out the last feature for the first time. The procedure is to issue a command like the following in a terminal session after creating the requisite directory in the file system and adding a host directory as a shared folder:

sudo mount -t vboxsf Music /mnt/host_music/

Above, Music is the name of the folder in the VirtualBox manager and /mnt/host_music in the directory in the guest file system. However, this returned the message at the head of this post at that first attempt:

/sbin/mount.vboxsf: mounting failed with the error: Protocol error

The solution thankfully turns out to be an easy one: reinstalling the Guest Additions, which certainly did the trick for me. The cause would appear to have been an update to Ubuntu, and 9.04 is understandably in a state of flux at the moment (I suspect kernel upgrades because of my previous experiences). Regardless of this, it is good to know that it's a problem with a simple fix, and I am seeing the niceties of a larger virtual screen system together with automatic grabbing and releasing of the mouse cursor too. While there may be a chance to explore the availability of these sorts of features to other Linux guests, I have other things that I should be doing and there's sunshine outside to be enjoyed.

On keyboards

While there cannot be too many Linux users who go out and partner a Microsoft keyboard with their system, my recent cable-induced mishap has resulted in exactly that outcome. Keyboards are such standard items that it is not so possible to generate any excitement about them, apart from RSI-related concerns. While I wasn't about to go for something cheap and nasty that would do me an injury, going for something too elaborate wasn't part of the plan either, even if examples of that ilk from Microsoft and Logitech were sorely tempting.

Shopping in a bricks and mortar store, like I was, has its pluses and its minuses. The main plus points are that you see and feel what you are buying, with the main drawback being that the selection on offer isn't likely to be as extensive as you'd find on the web, even if I was in a superstore. Despite the latter, there was still a good deal available. Though there were PS/2 keyboards for anyone needing them, USB ones seemed to be the main offer, with wireless examples showcased too. Strangely, the latter were only available as kits with mice included, further adding to the cost of an already none too cheap item. The result was that I wasn't lured away from the wired option.

While I didn't emerge with what would have been my first choice because that was out of stock, that's not to say that what I have doesn't do the job for me. The key action is soft and cushioned, which is a change from that to which I am accustomed; some keyboards feel like they belong on a laptop, but not this one. There are other bells and whistles too, with a surprising number of them working. The calculator and email buttons number among these along with the play/pause, back and forward ones for a media player; I am not so convinced about the volume controls though an on-screen indicator does pop up. You'd expect a Microsoft item to be more Windows specific than others, yet mine works as well as anything else in the Ubuntu world and I have no reason to suspect that other Linux distros would spurn it either. Keyboards tend to be one of those "buy-it-and-forget-it" items, and the new arrival should be no different.

Why lateral thinking beats panic when technology breaks

Last night, something idiotic happened to me: I tripped up in my main PC's cables and brought the behemoth crashing about the place. There was some resulting damage, with the keyboard PS/2 socket being put out of action and a busted USB port and mouse. When this happens, thoughts take on the form of a runaway train and the prospect of acquiring a new motherboard and assorted expensive paraphernalia trot into your mind; there are other things that more need my cash. Of course, the last time to be making such big decisions on computer components is when a mental maelstrom has descended upon you.

Eventually, I got myself away from the brink and lateral thinking began to take over. What helped was that most of the system is unaffected, enabling me to write this post with it. While a spare will work for now, a new ergonomic mouse is on order, cheaper alternatives to the keyboard conundrum have come into play. If PS/2 wasn't an option, then USB remains one, and that was the line of attack that was taken.

It involved a visit to the nearest branch of PC World after work, from where I came away with a new USB hub and a USB-compatible keyboard for less than the price of a new AM2+ Gigabyte motherboard that would have served my needs. Though an otherwise functional Trust keyboard may have been retired, that was a less expensive option than a full PC rebuild, which I may still need to do, albeit with far less immediacy than what flashed before my eyes within the last 24 hours. In fact, acquiring some cable ties should be higher on the acquisition wish list to avoid cable-induced tumbles in the future. It really does pay to be able to step back and see things from a wider perspective.