Technology Tales

A late "advance" sighting?

Somewhat infuriatingly, Google released its own browser, Chrome, into the wild near the end of last year, though only for Windows. My experiences with it on that platform are that it works smoothly, albeit without many of the bells and whistles that can be got for Firefox. While an unofficial partial port was achieved using Crossover Chromium and there is the Chromium project with all its warnings and the possibility to add a repository for its wares to Ubuntu's software sources, we have been tantalised rather than served so far. However, that was recently bettered by the release of early access versions. In reality, these can be said to be alpha versions so not everything works, but it's still Chrome and without the need for Windows or WINE. The rendering engine, most importantly, seems to be the equal of what you get on Windows, while ancillary functions like bookmark handling seem incomplete. In summary, the currently available deb packages are a work in progress, yet that's better than not having anything at all.

64-bit Firefox plugins?

My laptop has both Windows Vista and Ubuntu on there, with WUBI being the facilitator of the peaceful coexistence. However, what I either forgot or never realised was that it was the 64-bit variant of Ubuntu 9.04 that has found its way onto the thing. For the most part, it works well, but there is one catch that I recently encountered: not every Firefox plugin or add-on is 64-bit compatible. Google Gears is one such example, yet other very useful and pervasive helpers have the same affliction: RealPlayer is one, and Adobe's Flash is another. Apparently, you can still download the 32-bit release versions and use nspluginwrapper to get them going. That worked for RealPlayer, but seemingly not for Flash; more investigation may be needed on that one. Other remedies like using 32-bit Firefox (if it runs, of course) or alpha versions of what Adobe offers can be tried too. It almost goes without saying that I'd wish that there was more awareness of the 64-bit Linux world, but I remain glad to have met this rough edge before taking the plunge with my main system.

Update 2014-01-24: It looks as if this problem has gone away now with the growth in maturity of 64-bit computing. Certainly, it does not rear its head on any 64-bit Linux distro that I have used or even Windows, apart perhaps from ensuring that you are using the right JRE for a browser (32-bit or 64-bit).

Getting Fedora working in VirtualBox

After a hiatus induced by disk errors seen on start up, I have gone having a go with Fedora again. In the world of real PC's, its place has been taken by Debian, so virtualisation was brought into play for my most recent explorations. I could have gone with 10, the current stable version, but curiosity got the better of me and I downloaded a pre-release version of 11 instead.

On my way to getting that instated, I encountered two issues. The first of these was boot failure with the message like this:

FATAL: INT18: BOOT FAILURE

As it turned out, that was easily sorted. I was performing the installation from a DVD image mounted as if it were a real DVD, and laziness or some other similar reason had me rebooting with it still mounted. Though there is an option to load the hard disk variant, it wasn't happening, resulting in the message that's above. A complete shutdown and replacement of the virtual DVD with a real one set matters to rights.

The next trick was to get Guest Additions added, but Fedora's 2.6.29 was not what VirtualBox was expecting, and it demanded the same ransom as Debian: gcc, make and kernel header files. Unfamiliarity had me firing up Fedora's software installation software, only to find that Synaptic seems to beat it hands down in the search department. Turning to Google dredged up the following command to be executed, which got me further:

yum install binutils gcc make patch libgomp glibc-headers glibc-devel kernel-headers kernel-devel

However, the installed kernel headers didn't match the kernel, but a reboot fixed that once the kernel was updated. Then, the Guest Additions installed themselves as intended, with necessary compilations to match the installed kernel.

The procedures that I have described here would, it seems, work for Fedora 10; well, they certainly have bequeathed me a working system. I have had a little poke and a beta of Firefox 3.5 is included, and I saw sign of OpenOffice 3.1 too. So, it looks very cutting edge, easily so in comparison with Ubuntu and Debian. Apart from one or niggles, it seems to run smoothly too. Firstly, don't use the command shutdown -h now to close the thing down, or you'll cause VirtualBox to choke. Using the usual means ensures that all goes well, though. The other irritation is that it doesn't connect to the network without a poke from me. Whether SELinux is to blame for this or not, I cannot tell, but it might be something for consideration by the powers than be. That these are the sorts of things that I have noticed should be telling you that I have no major cause for complaint. While I have mulled over a move to Fedora in the past and that option remains as strong as ever, Ubuntu is not forcing me to look at an alternative and the fact that I know how to achieve what I need is resulting in inertia anyway.

Suffering from neglect?

There have been several recorded instances of Google acquiring something and then not developing it to its full potential. FeedBurner is yet another acquisition where this sort of thing has been suspected. Changeovers by monolithic edict and lack of responsiveness from support forums are the sorts of things that breed resentment in some that share opinions on the web. Within the last month, I found that my FeedBurner feeds were not being updated as they should have been, and it would not accept a new blog feed when I tried adding it. The result of both these was that I deactivated the FeedBurner FeedSmith plugin to take FeedBurner out of the way for my feed subscribers; those regulars on my hillwalking blog were greeted by a splurge of activity following something of a hiatus. There are alternatives such as RapidFeed and Pheedo, but I will stay away from the likes of these for a little while and take advantage of the newly added FeedStats plugin to keep tabs on how many come to see the feeds. The downside to this is that IE6 users will see the pure XML rather than a version with a more friendly formatting.

Better font display in Firefox 3 on Ubuntu

Now that all bar one of the Firefox plugins that I use have been updated to work with it, I have finally jumped ship to 3 from 2.0.x. The move wasn't without its travails, though. For one thing, Google Toolbar stopped working, and I resorted to Googlebar Lite instead for my needs. Apart from that, the only other irritation has been the appearance of fonts in the new version.

In Firefox 2, it would seem that I was getting away without tweaking my system settings to be their most optimum. With 3, I could do that no longer because of an irritating and pervasive fuzziness that particularly afflicted k's and w's. The way out of this turned out to involve changing my Appearance Preferences (Preferences > Appearance from the System menu). The required attention was focussed on the Fonts tab, whereupon the Details button was brought into use.

In the resulting dialogue box, smoothing was set to "Subpixel (LCDs)" and hinting to "Slight". Closing down everything after making the required selections and a restart of Firefox was all that was needed to improve matters and more completely make myself at home with Firefox 3.

Some nice things coming through...

While everyone is making good use of WordPress 2.5.x, development continues apace for future releases of the popular blogging platform and there are some goodies coming through on the functionality front. Google Gears are being brought into play for speeding up the administration dashboard; this started out being more prominent before being made more unobtrusive. The other big change has been an overhaul of the theme gallery and, if the theme is compatible, an overview facility has been added too. So WordPress is being tweaked and improved in the background to make 2.6 an interesting release.

Is Apple ditching Windows 2000?

Having had a brainwave of using my Windows 2000 VM to play music without impacting the rest of my PC's working, I made the discovery that a bit of digging was required to find a version of iTunes and QuickTime that work with Win2K. Google delivered the goods, so here are the links:

iTunes for Win2K

QuickTime for Win2K

It all reminds me of a post that I wrote a few months back, but iTunes is now working and, thanks to VMware's Shared Folders functionality, using the host PC's digital music collection. I'll be seeing how the ring-fencing goes...

Quoshing WordPress 2.3 upgrade gremlins…

Primarily because of the WordPress plugins that I use, a few inconsistencies have leaped out of the woodwork that needed to be fixed. Here are the issues that I encountered:

Database errors appearing in web pages

This was a momentary discovery along the upgrade trail, entirely caused by the way in which I was doing things. As usual, I went and copied over the WordPress 2.3 files to my web server, so I saw these errors before I ran the upgrade script. Then, they were banished, confirming that WordPress 2.3 code was trying to access a WordPress 2.2 type database; 2.3 has made some database changes to incorporate tagging.

Dashboard Editor no longer fully functional

The move to JQuery meant that some of the things for which it was looking had changed. They also changed the incoming links provider from Technorati to Google, now that the former is having a tougher time of it. It took a while to track down why I was unable to remove components from the front page of my dashboard as before, but a quick comparison of 2.3 code with its 2.2.3 forbear revealed all. I can make a copy of the updated code available for those who need it.

WordPress Admin Themer

The plugin works as before and does its job so well that you end up applying an old stylesheet (in the blog's theme folder) to the latest release. It only took a spot of tweaking to put everything in order.

I am not complaining about any of these, partly because they were easy to resolve and, in any event, I don't mind a spot of code cutting. However, I can foresee some users being put out by them, hence my sharing my experiences.

Update: Dashboard Editor has since been updated by the author. Even so, I will stick with my own version of the plugin.

HAL.DLL: a roadblock on the resurrection of a poorly PC

My PC is very poorly at the moment and Windows XP re-installation is the prescribed course of action. However, I have getting errors reporting missing or damaged HAL.DLL at the first reboot of the system during installation. I thought that there might be hard disk confusion and so unplugged all but the Windows boot drive. That only gave me an error about hard drives not being set up properly. Thankfully, a quick outing on Google turned up a few ideas. I should really have started with Microsoft, since they have an article on the problem. About.com has also got something to offer on the subject and seems to be a good resource on installing XP to boot: I had forgotten how to do a repair installation and couldn't find the place in the installation menus. In any event, a complete refresh should be a good thing in the long run, even if it will be a very disruptive process. While I did consider moving to Vista at that point, bringing XP back online seemed the quickest route to getting things back together again. Strangely, I feel like a fish out of water right now, but that'll soon change...

Update: It was, in fact, my boot.ini that was causing this and replacement of the existing contents with defaults resolved the problem...

IE6 and JavaScript performance

Having been exposed to an application at work that uses a lot of JavaScript, I fully appreciate what some mean when they discuss IE6's inefficient handling of JavaScript. After seeing a web page taking an age to reload and your CPU taking a hammering because of JavaScript processing, the penny does tend to drop...

Needless to say, this very much impacts the world of AJAX-driven web applications with their heavy dependence on client-side JavaScript. While IE7 does come to the rescue, there remain plenty of IE6 users still out there, and this is reflected in website statistics. This demonstrates a certain level of inertia in the browser market that not only afflicts the uptake of IE7 but also the likes of Mozilla, Opera and Safari. It also means that anyone developing AJAX applications very much needs to continue testing in IE6, especially if the product of their labours is for wider public use.

An example of such an application is Zimbra, an open-source web application for messaging and collaboration, and the people behind it have generously shared the results of their browser performance benchmarking. They did comparisons of IE6 vs. IE7 and Firefox 2 vs. IE7. IE6 easily came out as the worst of these, while Firefox 2 was the best.

The next question to be asked could centre around the type of code that is processed inefficiently by IE6. While I wouldn't be at all surprised if a list emerged, here's one: using Microsoft's proprietary innerHTML object to update the DOM for a web page format. Having a quick trawl on Google, this came up for mention as a cause of memory leaks. It is also a Microsoft innovation that never got taken up by those overseeing web standards, hardly a surprise since a spot of DOM scripting achieves the same end. It may be faster to code than any alternatives, and it does have some support from other browsers, but it does seem to have got a bad name, so it should be avoided if possible. That said, it would be interesting to see a performance comparison between innerHTML and DOM methods in IE6.