Technology Tales

Adding Quicktime movie support to Firefox running on Linux

For whatever reason, my installation of Ubuntu GNOME Remix 12.10, didn't have QuickTime support added to Firefox by default. To make a website work near enough as it was intended, this needed to be remedied. The solution was to issue a command to install the missing software:

sudo apt-get install mplayer gnome-mplayer gecko-mediaplayer

Mplayer is the main component here but running the above command adds all the required supporting packages too, so that a Firefox restart was all that needed to get things going.

Sorting a kernel upgrade error in Linux Mint 13

Linux Mint 14 may be out now, but I'll be sticking with its predecessor for now. Being a user of GNOME Shell instead of Cinnamon or Mate, I'll wait for extensions to get updated for 3.6 before making a move away from 3.4 where the ones that I use happily work. Given that Linux Mint 13 is set to get support until 2017, it's not as if there is any rush either. Adding the back-ported packages repository to my list of software sources means that I will not miss out on the latest versions of MDM, Cinnamon and Mate anyway. With Ubuntu set to stick to GNOME 3.6 until after 13.04 is released, adding the GNOME 3 Team PPA will be needed if 3.8 arrives with interesting goodies; there are interesting noises that suggest the approach taken in Linux Mint 12 may be used to give more of a GNOME 2 desktop experience. Options abound and there are developments in the pipeline that I hope to explore too.

However, there is one issue that I have had to fix which stymies upgrades within the 3.2 kernel branch. A configuration file (/etc/grub.d/10_linux) points to /usr/share/grub/grub-mkconfig_lib instead of /usr/lib/grub/grub-mkconfig_lib so I have been amending it every time I needed to do a kernel update. However, it just reverts to the previous state, so I thought of another solution: creating a symbolic link in the incorrect location that points to the correct one so that updates complete without manual intervention every time. The command that does the needful is below:

sudo ln -s /usr/lib/grub/grub-mkconfig_lib /usr/share/grub/grub-mkconfig_lib

Of course, figuring out what causes the reversion would be good too, but the symbolic link fix works so well that there's little point in exploring it further. Of course, if anyone can add how you'd do that, I'd welcome this advice too. New knowledge is always good.

A place for GNOME?

There has been a lot of doom and gloom spoken about the GNOME desktop environment and the project behind it. These days, it seems to be the fashionable thing to go constantly criticising it, especially after what Linus Torvalds said. KDE went through the same sort of experience a few years ago and seems to have got far enough beyond it that some are choosing it instead of GNOME. For a good while, it was the other way around.

Since its inception, the GNOME Shell has attracted a lot of adverse comment. However, since my first encounter, it has grown on me to the point that I added it to Ubuntu and Linux Mint and use it as my default desktop environment instead of Unity, Mate or Cinnamon. The first of these may not be so surprising because of the unique approach that has been taken. The use of lenses and an application launch bar are items to which I could adapt, but it is the merging of application menus and title bars with the top panel of the desktop that really puts me off it. Application window buttons can be moved to the right everywhere but on this global menu, so I tend to view things from afar instead of using it every day. There just is something about the experience that won't grow on me. Strangely, that also applies to my impressions of KDE, albeit differently; there just is something less slick about the appearance of the bottom panel, the plasmoids and other items like them.

Given that Mate and Cinnamon continue the GNOME 2 approach to things that dominated my home computing for much of the last five years since I turned to Ubuntu, my decision to use GNOME Shell instead of either come as a surprise. It isn't that the environments aren't slick enough, just that I have come to prefer the way that GNOME Shell handles workspaces, spawning them as you need them. If that could be an option in Cinnamon, then it might become my desktop of choice. However, that seems to go against the philosophy of the project, even if someone adds and extension for it.

For a time, I played with going with LXDE rather than either Unity or GNOME Shell; as it happened, my first impressions of the latter weren't so positive until I spent a day with the GNOME variant of Fedora 15. Being not dissimilar to GNOME 2 in the way that it worked was the main attraction of LXDE and my initial use of it was with Lubuntu running on a netbook; the LXDE version of Linux Mint 12 now runs on it so there hasn't been so much change on that machine.

Sometimes, the only way to deal with change is to have a look at it to see what's coming and to decide what you need to do about it. In the case of GNOME Shell, my day with Fedora 15 on a backup PC changed my impressions, and Linux Mint 11's GNOME 2 desktop looked a bit old-fashioned afterwards. In fact, I popped GNOME 3 on there and have been using it as my main desktop environment ever since.

With computing, there always are some who expect things to just work and be the way that they want them. The need for extra configuration is a criticism that still can be levelled at GNOME Shell. Before going with Mate and Cinnamon, Linux Mint went the same way for a while, leaving me to wonder what can be done with such an approach. Will someone else pick up that baton and do the handiwork so that users don't have to do it? Not yet, it seems. Since no one is following the lead of Linux Mint 12, the need for user tweaking remains, even if I have found which ones work for me.

The first place to begin is GNOME's Extensions website, from where I raid a few extensions every time I do an operating system installation. The Alternative Status Menu extension is among the first to get added so that I have the shutdown option again on the user menu, a common criticism of the default set up. Since I always install the GNOME Tweak Tool from the distro repositories, I add the Advanced Setting in User Menu extension to get an entry in the status menu that grants quick access. Frippery Bottom Panel comes next on the list because of its workspace switcher and application window list. Others like Frippery Move Clock, Monitor Status Indicator, Places Status Indicator, Removable Drive Menu, Remove Accessibility, Shell Restart User Menu Entry and User Themes follow in some order and make things feel more pleasing, at least to my mind.

You aren't stuck with the default theme, either, and I have chosen Elementary Luna from deviantART. For adding your own themes, the above listed User Themes extension is needed. Because I want the Frippery Bottom Panel to match the top panel, I tweaked its stylesheet and that's where the Restart User Menu Entry extension comes in handy, though some care is needed not to crash the desktop with constant shell restarts.

Doing the above makes GNOME Shell really amenable to me, and I wouldn't like to lose that freedom to customise. Saying that, the continued controversial changes aren't stopping yet. Those made to the Nautilus file manager in GNOME 3.6 have caused the Linux Mint project to create Nemo, a fork of the software, and Ubuntu is sticking with the previous version for now. Taking some action yourself instead of just complaining loudly sounds like a more positive approach, which makes its own statement. However, at a time when many want the GNOME project team to listen to users, the new Nautilus appears and is not to be what they needed to see. Could the project go on like this? Only time can answer that one.

While it appears that many have changed from GNOME to other desktop environments, I haven't come across any numbers. A reducing user base could be a way of sending a message about any discontent, one that makes use of a great feature of free software: there is plenty of choice. If the next version of Nautilus isn't to my taste, there are plenty of alternatives out there. After all, Cinnamon started on Linux Mint and has gone from there to being available for other distros too; Fedora is one example. Nemo could follow suit.

Now that GNOME's constituent applications are seeing changes, GNOME Shell may be left to mature. Computer interfaces are undergoing a lot of change at the moment and Microsoft Windows 8 is bringing its own big leap. Though controversial at the time, change can be a good thing too and us technical folk always like seeing new things come along (today saw the launch of the iPhone 5 and many folk queueing up for it; Google's Nexus 7 ran out of stock in its first weeks on the market; there are more). That could be what got me using GNOME 3 in the first place, even if my plan is to stick with it for a while yet.

Widely differing approaches

The computer on which I am writing these words is running Linux Mint with the Cinnamon desktop environment, a fork of GNOME Shell. This looks as if it will be the default face of GNOME 3 in the next version of Linux Mint, with the MGSE dressing up of GNOME Shell looking more and more like an interim measure until something more consistent was available. While some complained that what was delivered in version 12 of the distribution was a sort of greatest hits selection, I reckon that bets were being hedged by the project team.

Impressions of what's coming

By default, you get a single panel at the bottom of your screen with everything you need in there. However, it is possible to change the layout so that the panel is at the top or there are two panels, one at the top and the other at the bottom. So far, there is no means of configuring which panel applet goes where, as was the case in Linux Mint 11 and its predecessors. However, the default placements are very sensible, so I have no cause for complaint at this point.

Just because you cannot place applets doesn't mean that there is no configurability, though. Since Cinnamon is extensible, you can change the way that time is displayed in the clock, as well as enabling additional applets. It also is possible to control visual effects, such as the way new application windows pop up on a screen.

GNOME 3 is there underneath all of this, though there's no sign of the application dashboard of GNOME Shell. The continually expanding number of slots in the workspace launcher is one sign, as is the enabling of a hotspot at the top right hand corner by default. This brings up an overview screen showing what application windows are open in a workspace. The new Mint menu even gets the ability to search through installed applications, together with the ability to browse through what's available.

In summary, Cinnamon already looks good, though a little polish and extra configuration options wouldn't go amiss. An example of the former is the placement of desktop numbers in the workspace switcher, and I already have discussed the latter.  It does appear that the Linux Mint approach to desktop environments is taking shape with a far more conventional feel than the likes of Unity or GNOME Shell. Just as Cinnamon has become available in openSUSE, I can see it gracing LMDE too whenever Debian gets to moving over to GNOME 3 as must be inevitable now unless they take another approach such as MATE.

In comparison with a revolution

While Linux Mint are choosing convention and streamlining GNOME to their own designs, it appears that Ubuntu's Unity is getting ever more experimental as the time when Ubuntu simply evolved from one release to the next becomes an increasingly more distant memory. The latest development is the announcement that application menus could get replaced by a heads-up display (HUD) instead. That would be yet another change made by what increasingly looks like a top-down leadership, reminiscent of what exists at Apple. While it is good to have innovation, you have to ask where users fit in all of this when Linux Mint already has gained from what has been done so far and may gain more again. Still, seeing what happens to Ubuntu sounds like an interesting pastime, though I'm not sure that I'd be depending on the default spin of this distro as my sole operating system right now. Also, changing the interface every few months wouldn't work in a corporate environment at all, so you have to wonder where Mark Shuttleworth is driving all this, though Microsoft is engaging in a bit of experimentation of its own. We are living in interesting times for the computer desktop, so it's just as well that there are safe havens like Linux Mint, too. Watching from afar sounds safer.

A few thoughts on Ubuntu 12.04 Alpha 1

After an aborted installation in VirtualBox using the direct installation, I got a VM instance of Ubuntu 12.04 in place by installing from a loaded Live CD session. That proceeded without any trouble and downloaded the required updates too. First impressions revealed a polished Unity interface that ran without any crashes. The task of adding VirtualBox's Guest Additions in the usual way was all that was needed to tart up the experience even more. However, there remains a wish list for improvements to the Unity desktop, so here are mine:

• Merging of an application title bar with the desktop's top panel on maximisation: In 11.10, removing the appmenu packages does force menus into application windows and that seems to be destined as a configurable item in Unity at some point; it'd be good to see it in 12.04 though it's not in the first alpha release. The merging of the panel and title bar would be a good thing to have as a user setting too because I am unconvinced by the current behaviour when there is plenty of screen space.
• Rearranging icons on the application launcher: There appears to be no obvious way to do this at the moment and attempting to move them with a mouse only moves the launcher up and down. There is no doubt that this behaviour is a bonus for those working with small screens, but it is a nuisance unless there is another means for achieving the same end.
• Desktop environment switcher on the login screen: This seems to have disappeared for now. Hopefully, this is an oversight that will see correction in later stages of the development of Ubuntu 12.04. This is how I currently get Ubuntu 11.10 to boot into GNOME Shell, so its loss would be a step backwards. Then, a Gubuntu project would become truly necessary, though I have to say that Linux Mint makes such a viable alternative that I wonder how they would get going.

In summary, it does look as if the Unity interface is getting more and more polished. However, there are niggles that I have described above that, I think, need addressing, and I hope that many of them will be addressed in either 12.04 or 12.10. Though usability seems to be improving, I still am left with the impression that it has a way to go yet.

A new repository for GNOME 3 Extensions

Not before time, the GNOME project has set up a central website for GNOME Shell extensions. It seems to be in the hands of extension developers to make GNOME 3 more palatable to those who find it not to their taste in its default configuration. If you are using Firefox, installation is as easy as clicking the ON/OFF icon for a particular plugin on its web page and then selecting install in the dialogue box that pops up. Of all the browsers that you can use on GNOME, it seems to be Firefox that is the only one that has this ability at the moment.

Though the website may have the alpha legend on there at present, it works well enough so far, so I have had no hesitation in using it for those extensions that are of interest to me. This is an interesting development that deserves to stay, especially when it detects that a plugin is incompatible with your version of GNOME.

Currently, I use GNOME 3.2, and it pops up a useful menu for deactivating extensions when the desktop fails to load. That's a welcome development because I have had extensions crashing GNOME 3.0 on me and running the GNOME Tweak Tool on the fallback desktop often was the only alternative. GNOME 3 seems to be growing up nicely.

Getting Gnome Shell going for Fedora 16 running in VirtualBox

There are a number of complaints out there about how hard it is to get GNOME Shell running for a Fedora 16 installation in a VirtualBox virtual machine. As with earlier versions of Fedora, preparation remains a matter of having make, gcc and kernel-devel (kernel headers, in other words). While I have got away with just those, adding dkms (dynamic kernel module support) to the list might be no bad idea either. To get all of those instated, it is a matter of running the following command as root or using sudo:

yum -y install make gcc kernel-devel dkms

The -y switch ensures that any Y/N prompts that usually appear are suppressed and that the installation is completed. Just leave it out if you are inclined to get second thoughts. Another item that has been needed with a previous release of Fedora is libgomp, but I haven't had to add this for Fedora 16 if I recall correctly.

Once those are in place, it is time to install the VirtualBox Guest Additions.  Going to Devices > Install Guest Additions... mounts a virtual CD that can be used for the installation of the various drivers that are needed. To do the installation, first go to where the installer is located using the following command:

cd /media/VBOXADDITIONS_4.1.6_74713/

Note that this location will change according to the release and build numbers of VirtualBox, yet the process essentially will be the same aside from this. Once in there, issue the following command as root or using sudo:

./VBoxLinuxAdditions.run

Hopefully, this will complete without errors now with the precursor software that has been added beforehand. However, there is one more thing that needs doing, or you will get the GNOME 3 fallback desktop instead. It pertains to SELinux, an old adversary of mine that got in the way when I was setting up a web server on a machine running Fedora. It doesn't recognise the new VirtualBox drivers as it should, so the following command needs executing as root or using sudo:

restorecon -R -v /opt

Doing this restores the SELinux contexts for the /opt directories within which the VirtualBox software directories are found. The -R switch tells it to act recursively and -v makes it verbose. When it has done its work, hopefully successfully, it is time to reboot the virtual machine, and you should have a GNOME Shell desktop interface when you log in.

An in situ upgrade to Linux Mint 12

Though it isn't the recommended approach, I have ended up upgrading to Linux Mint 12 from Linux Mint 11 using an in situ route. Having attempted this before with a VirtualBox hosted installation, I am well aware of the possibility of things going wrong. Then, a full re-installation was needed to remedy the situation. With that in mind, I made a number of backups in the case of an emergency fresh installation of the latest release of Linux Mint. Apache and VirtualBox configuration files together with MySQL backups were put where they could be retrieved should that be required. The same applied to the list of installed packages on my system. So far, I haven't needed to use these, but there is no point in taking too many chances.

The first step in an in-situ Linux Mint upgrade is to edit /etc/apt/sources.list. In the repository location definitions, any reference to katya (11) was changed to lisa (for 12) and the same applied to any appearance of natty (Ubuntu 11.04) which needed to become oneiric (Ubuntu 11.10). With that done, it was time to issue the following command:

sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade

Once that had completed, it was time to add the new additions that come with Linux Mint 12 to my system using a combination of apt-get, aptitude and Synaptic; the process took a few cycles. GNOME already was in place from prior experimentation, so there was no need to add this anew. However, I need to instate MGSE to gain the default Linux Mint customisations of GNOME 3. Along with that, I decided to add MATE, the fork of GNOME 2. That necessitated the removal of two old libraries (libgcr0 and libgpp11, if I recall correctly, which will tell you what is causing any conflict) using Synaptic. With MGSE and MATE in place, it was time to install LightDM and its Unity greeter to get the Linux Mint login screen. Using GDM wasn't giving a very smooth visual experience and Ubuntu, the basis of Linux Mint, uses LightDM anyway. Even using the GTK greeter with LightDM produced a clunky login box in front of a garish screen. Configuration tweaks could have improved on this, but it appears that using LightDM and Unity greeter is what gives the intended setup and experience.

With all of this complete, the system seemed to be running fine until the occasional desktop freeze occurred with Banshee running. Blaming that, I changed to Rhythmbox instead, though that helped only marginally. While this might be blamed on how I upgraded my system, things seemed to have steadied themselves in the week since then. As a test, I had the music player going for a few hours and there was no problem. With the call for testing of an update to MATE a few days ago, it now looks as if there may have been bugs in the original release of Linux Mint 12. Daily updates have added new versions of MGSE and MATE, so that may have something to do with the increase in stability. Even so, I haven't discounted the possibility of needing to do a fresh installation of Linux Mint 12 just yet. However, if things continue as they are, then it won't be needed and that's an upheaval avoided should things go that way. That's why in situ upgrades are attractive, though rolling distros like Arch Linux (these words are being written on a system running this) and LMDE are more so.

Removing the Guest Account Entry from Ubuntu 11.10 and Linux Mint 12 Login Screens

Another feature of Ubuntu 11.10 and Linux Mint 12 is the appearance of a Guest Account entry on their login screens. Windows has had this feature for a while now, but it is easy to turn it off if you know where to look. Somehow, Ubuntu and Linux Mint haven't made it obvious as it could be. In both cases, you have to edit /etc/lightdm/lightdm.conf and add the following line to the bottom of the file:

allow-guest=false

That removes the entry in question and could a little more security. On Ubuntu, there are lines in the file controlling the background image that you have for your login screen. In my experience, Linux Mint stores this in the greeter file referenced in lightdm.conf and that's unity-greeter in my case, though, I mostly use GNOME 3 with only the occasional stint using the MATE desktop environment.

A little look at Windows 8

Even if it has been a little while, I have managed to set up a VirtualBox virtual machine to have a look at the Developer Preview of the next version of Windows, something that I and others continue to call Windows 8 though Microsoft has yet to confirm the name. When I tried the installation before, it failed on me, though that may have been due to having an earlier release of VirtualBox on my machine at that time. 4.1.14 has a preset for Windows 8 and I also happened to notice that it can create virtual hard disks that can be used with competitors like VMWare, Parallels and Virtual PC too. It's an interesting development, even if I am left wondering why you'd need to do that when VirtualBox runs on most platforms anyway.

To get back to Windows 8, the installation ran near enough without any intervention apart from stating the language you wanted to use, U.K. English in my case. On startup, the operating system presents you with a lock screen that you need to get out of the way so you can log in. It can be dragged out of your way, or you can double-click on it or use the carriage return key to get rid of it. Quite why someone thinks it's a good extra is a little beyond me, when a log in screen would suffice. Logging in gets you the new start menu or, as I prefer to think of it, screen. By default, there are a good few Metro apps installed, though I decided to rid myself of most of them.

Regarding those apps, one irritation could be that there isn't that obvious a way to switch away from them to something else. Thankfully, ALT+TAB does seem to work and it has the most instantaneous effect. Otherwise, using the Windows key or hovering over the bottom-left corner of the screen to get the menu that brings up the start screen. From the PC user's point of view, I could see this needing a little more thought because it took a little while for me to figure out what to do. Closing Metro apps isn't an option either unless you resort to the Task Manager to do so. Microsoft appears to want to leave them open from the point at which you start them until the PC is shut down. It's a design decision that leaves me unconvinced, though; thoughts of rogue apps running riot on a system come to mind. Then, a stop button could be handy.

There is no start menu as we have come to know it any more with the start screen replacing it. However, it is possible to limit what's on there to the software that you use most often and rearrange panels as you'd like them to be. Apart from hosting shortcuts for starting applications, it also acts as a task switcher like the task bar in Windows 7 and there is one of those in Windows 8 too when you jump to the desktop; handily, there's a panel for that too. Installing Firefox added a panel to the start screen, so a little thought has gone into such a common situation, and that's just as well. Still, there's more work to be done because, currently, there's no way of changing the background colour of the start screen without resorting to a hex editor or third party tools. Still, since you can pick your own picture for the lock screen, things are not all locked down on you.

A preview of IE 10 is included and, apart from the occasional artifact when displaying one of my websites, it seems to work well enough, as does Windows Explorer. However, aside from these and a smattering of Metro apps, the Developer Preview does feel barer than previous versions of Windows. However, it does appear that applications like Notepad, PowerShell and the Command Prompt are on there, yet you need to search for these. That also means that you need to know about them too, so I'd suggest a better way of browsing the applications that are available too. This is one of the weaknesses of Ubuntu's Unity interface, and you need to search in the Dash to find them. Just starting to type in the Metro start screen (and other screens too, it seems) in Windows does trigger the completion of a search box, much like what happens in the GNOME Shell Activities screen on systems with GNOME 3. While it's good to see good ideas being reused from elsewhere, Microsoft might do well to note that you still can browse lists of applications in GNOME 3 too.

Shutting down Windows 8 also is seemingly more convoluted than is the case with Windows 7. Logging off and then powering off from the log in screen is one approach, and that was my early impression of GNOME 3 too. With the latter, I later discovered a status menu plugin that added in the option where it was accessible or that using the ALT key when clicking the status menu when the plugin wouldn't work would do what I needed. Without logging off from Windows 8, you can do a shutdown using the sidebar that appears on selecting Settings from the menu that pops up on hovering near the bottom-left corner of the start screen or the Start button of the task bar of the desktop. Then, look for the power icon and select what you need from the menu that clicking on this icon produces. Of course, you may find that the ALT+F4 key combination when issued while on a clean desktop is the cleanest of all.

All in all, the Developer Preview of the next release of Windows looks fairly usable. That is not to imply that there aren't things that need changing. Aside from this being an early sight of what may be coming to us Windows users, it isn't unknown for Microsoft to roll back on a radical move to make it more palatable to the user community. After all, it has to watch how it treats the corporate market too. The strong possibility of there being alterations is one thought that needs to be shared with those who are inclined to lose their tempers at the moment and I have seen comments with unpleasant language out there on the web (none of that here, please, by the way). As for me, I like to look ahead to be forewarned about what's coming my way in the world of computing. What I have seen so far of the next Windows release is reassuring, though there are rough edges such as PC shutdown and Metro app switching, yet Microsoft cannot commit commercial suicide either, so these have to be fixed. It appears that the world of Microsoft operating systems is in flux, with the company's keeping a firm eye on the world of mobile computing, with tablets being a major concern. While others may disagree, I can see Windows 8 working well on conventional PC's and that's no bad thing.