Devuan 1.0.0 -- Debian without systemd Prior to the release of Debian 8 in early 2015, the Debian project held a debate over which implementation of init software should be used in future versions of the distribution. Of the contenders (Upstart, SysV and systemd), systemd came out on top, which resulted in Debian using the same init software as most other mainstream Linux distributions. Some people were unhappy with the transition from the previous init implementation (SysV) to the newer systemd software. This discontent gave rise to the Devuan GNU+Linux project, which forked Debian with the purpose of removing dependencies on systemd.



Devuan 1.0.0 is essentially a fork of Debian 8 with SysV as the default init software. The Devuan distribution is offered as either a stand alone distribution or as an upgrade for recent versions of Debian - specifically for Debian 7 Wheezy and Debian 8 Jessie. I decided to try out the migration process from Debian 8 to Devuan and then explore what it was like to run a fresh, new installation of Devuan.



Devuan migration



I began my test of migrating from Debian 8 to Devuan 1 by installing Debian with the MATE desktop environment. Apart from the MATE desktop, my Debian installation had the default services running. With Debian 8 installed and all available software updates downloaded, I then followed the migration instructions provided in the Devuan release notes. The instructions are fairly straight forward and basically just require replacing the names of the Debian package servers in /etc/apt/sources.list with the Devuan server names. We then refresh our package information and run an upgrade command. From the Debian command line these three commands will perform the migration: apt-get update

apt-get install devuan-keyring

apt-get dist-upgrade The APT package manager removes the systemd-sysv package, offers to download some alternative packages such as D-bus, ConsoleKit, the control groups manager, the systemd-shim package, the wicd network manager, the Slim display manager and SysV init. During the transition the package manager paused to ask me to select which display manager to use, Debian's LightDM or Devuan's Slim. I opted to use the Slim package in order to get a more pure Devuan experience.





Devuan GNU+Linux 1.0.0 -- Browsing files and running LibreOffice

(full image size: 187kB, resolution: 1280x1024 pixels)



The migration process completed and I next rebooted my computer to confirm my Debian installation had survived the transition to Devuan. The newly created Devuan system booted to a graphical login screen provided by Slim. Signing into MATE I found my desktop's wallpaper had been changed to an image with Devuan branding, but otherwise MATE appeared to be unaffected. One of the few changes I encountered was that I was unable to shutdown my computer when signed into the desktop. Attempting to power off the computer from MATE's menu would sign my user out of the desktop and the computer would then display a text console and freeze. I was unable to login as another user or otherwise recover the system at that point and a hard reboot would be required.



I noticed after playing with my Debian-turned-Devuan system for a while that the systemd packages were still present on my computer. I checked and found SysV had been set up as the default init software, but systemd packages lingered. When I tried to remove systemd entirely, I found that the package manager then insisted it would need to remove my MATE desktop as the MATE packages listed systemd as a dependency. It appears as though the Xfce desktop environment has no dependency on systemd and, if I wished, I could swap out MATE for Xfce if I wanted to run my computer without any systemd packages present.



I ran a few comparisons of boot times, memory consumption and disk resource usage when running Debian 8 verses running Devuan 1. My original Debian system used approximately 170MB of RAM when logged into the MATE desktop and took up about 2.9GB of disk space. Devuan used 200MB of RAM when signed into MATE and used 2.7GB of disk space. The boot times of both systems were identical, to within a second. In short, boot times, disk usage and memory footprints were near enough to being the same as to make no practical difference.



A fresh install of Devuan



My next action was to wipe my installation of Debian-turned-Devuan and set up a fresh installation of Devuan. Booting off the Devuan live media brought up the Xfce 4.10 desktop. On the desktop I found icons for launching a file manager and starting the distribution's system installer. A panel at the top of the screen housed the Xfce application menu, a task switcher and the system tray. At the bottom of the screen we can find a quick-launch bar.





Devuan GNU+Linux 1.0.0 -- Connecting to a network and browsing the web

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Devuan's live disc features a completely different system installer than the one Debian uses. The Devuan installer begins by displaying a window on the desktop asking if we want users on our new operating system to use the su or sudo command to run tasks as the system administrator. We are then told we will need to have a disk partition set aside for the operating system. Buttons in the installer window give us the option of launching the GParted graphical partition manager or the cfdisk command line partition manager. Once I had used GParted to format a partition, I was returned to the installer's window where I was asked to select a partition for Devuan to use. Available partitions are displayed with their device names (/dev/sda1, /dev/sda2, etc) and no description indicating the size or type of the partitions.



Once I had set up and selected a partition to use for Devuan, I was asked to select my time zone from a list. Then I was asked to select my language locale from a list of short, cryptic locale names. US English is the default locale setting. For a while after I selected the locale nothing happened. Then I realized a terminal window had opened in the background and the terminal window contained a prompt asking if it was okay for the installer to proceed with the installation. A list of files being copied to my hard drive then filled the virtual terminal for several minutes.



A bit later, the installer asked me to provide my name for a new user account. I was then asked how I would like to use sudo to elevate my user's access and the questions were, in my opinion, unusual and (perhaps) unique to Devuan. The three questions asked if my user should have permission to use sudo, whether to use sudo only for shutting down the computer and if sudo should be used "as default". I suspect the third question meant I could set my user account to execute all commands through sudo, making me effectively the administrator all the time, but the meaning of the query was unclear. At any rate, at this point the installer was finished and returned me to the Xfce desktop where I could reboot the computer to start using my new copy of Devuan.



First impressions



Devuan boots to a graphical login screen. There are no prompts to enter a username or password, just a single blank field where we can type. Typing the username, followed by the password signs us in. Logging in brings up the Xfce desktop environment. Icons on the desktop open the Thunar file manager and open a text editor containing the project's release notes. There are also two other icons on the desktop which will universally increase and decrease the size of the desktop's fonts. I don't think I have encountered any other distributions which have such easily accessible controls for changing font size and I appreciated the feature. The Xfce desktop was responsive and featured a traditional tree-style application menu.



Applications



Looking through the application menu we can find the Firefox web browser (without Flash support) and version 4 of the LibreOffice productivity suite. The wicd networking utility is available to help us connect to local networks. Devuan includes a dictionary, a PDF document viewer and the GNU Image Manipulation Program. The Ristretto image viewer is present along with the Quod Libet audio player, the VLC media player and the Xfburn disc burning software. Another application called Ex Falso is featured and, though I did not see a description of the application, it appears to be designed for managing audio libraries. Devuan ships with media codecs, allowing us to play most audio and video formats. The distribution also includes a file archive manager, a text editor and a bulk file renaming tool. The Orca screen reader is included as is a configuration module for setting up printers. Looking further we can find version 4.9 of the GNU Compiler Collection, Java, the Sys V init software and version 3.16 of the Linux kernel.



Hardware



Devuan ran well in both of my test environments, in a VirtualBox virtual machine and on a desktop computer. At first, Devuan did not integrate with VirtualBox and was not able to make use of the system's full screen resolution. However, I found VirtualBox guest modules are included in the distribution's repositories and installing them improved my experience running Devuan in the virtual environment. The distribution booted quickly, ran smoothly and was stable. The Xfce desktop was quick to respond and the default theme, while it was dark, was easy to look at for prolonged periods. I also found my HP printer was detected and set up with minimal effort on my part.



Earlier I mentioned when I had migrated from Debian to Devuan, the operating system was unable to shutdown my computer. This problem did not occur when I was running a fresh installation of Devuan and I was able to reboot or shutdown the system. Whether I installed Devuan from scratch or migrated to Devuan from a Debian installation, my system used about 200MB of memory when logged into the Xfce desktop.



Software management



Devuan uses the APT command line suite of tools for manipulating software packages. The distribution also features the Synaptic graphical package manager which makes it fairly easy to install, remove and upgrade software on the system. Synaptic has a relatively plain interface, presenting the user with a list of available packages. We can click a box next to each package to install or remove the selected item. During my trial with Devuan, the project made 30 new software updates available and these totalled just 62MB in size. The only problem I faced when working with Devuan's software came when I tried to install Flash support. The Flash installer was downloaded successfully, but Flash itself failed to download from Adobe's servers. The distribution does not appear to have the Gnash free software implementation of Flash, leaving me without Flash support while browsing the web.





Devuan GNU+Linux 1.0.0 -- Managing software packages with Synaptic

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Settings



Most of the distribution's settings can be accessed through the Xfce control panel. This panel contains friendly modules for adjusting the appearance of the desktop, the placement and style of panels and screen resolution. The settings panel also allows us to adjust notifications and change our mouse and keyboard configuration. Additional modules help us change the desktop's theme and short-cut keys. The only module I felt was missing was a tool for managing user accounts, though we can work with accounts from the command line.





Devuan GNU+Linux 1.0.0 -- The settings panel

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Conclusions



On the whole, the Devuan project appears to have achieved its goals. The distribution offers users an operating system virtually identical to Debian 8, but with systemd replaced with SysV init. The project provides existing Debian users a clean and easy migration path to Devuan that has only a minimal amount of side effects. Taken on its own, Devuan is a lightweight operating system with a fairly minimal (and responsive) desktop environment.



While Devuan has reached its goals, I had two significant concerns about the distribution. The first concern was the system installer. While it worked, I'm curious as to why Devuan appears to have discarded the reliable Debian installer in favour of a less feature rich and less polished installation process. Other Debian-friendly installers, such as the one which ships with Linux Mint Debian Edition, are available if a more streamlined approach is wanted.



My other concern is that Devuan 1.0.0 is about two years behind Debian. A fork of Debian without systemd seemed promising and interesting in 2015 when Debian 8 was released. But now, two years later, with Debian 9 on the horizon, Devuan 1 feels outdated. The software, such as the office suite and kernel, are about three years old at this point and unlikely to appeal to any except the most conservative users. The distribution may hold more appeal on servers where change often happens more slowly, but even there some of the Devuan packages are starting to show their age.



At this point I suspect Devuan 1 will only appeal to the more enthusiastic members of the anti-systemd crowd. If Devuan 2 can be launched shortly after Debian 9 comes out later this year then I could see the project gaining a stronger user base, but at the moment Devuan feels like an interesting idea that took too long to get off the ground. * * * * * Hardware used in this review



My physical test equipment for this review was a desktop HP Pavilon p6 Series with the following specifications: Processor: Dual-core 2.8GHz AMD A4-3420 APU

Storage: 500GB Hitachi hard drive

Memory: 6GB of RAM

Networking: Realtek RTL8111 wired network card

Display: AMD Radeon HD 6410D video card * * * * * Visitor supplied rating



Devuan has a visitor supplied average rating of: 9/10 from 375 review(s).

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