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openSUSE 12.3 is the first version openSUSE that i have been able to install on any of the different hardware i've got at hand, since version 11.4. Version 11.4 on the other hand is very good.
12.3 does not install "out of the box". But with some quirks, like nomodeset boot parameters and in one case install using text mode console, i've managed to get some systems up and running good, after some segmentation faults, black screens, ACPI-bugs, thrashed files in /etc...
But there are lots of bugs in 12.3, some of them quite severe.
Systemd has replaced SystemV runlevels. On a few freshly installed openSUSE 12.3 systems the Yast Runlevel module manages to start services like expected a bit randomly. Sometimes it works, and sometimes not.
One of the systems has a totally disfunctional Yast Runlevel module, and the services must be managed manually.
Not sure at all why that system has the worst problems?
WHat is the benefit of systemd? It's not faster to boot. Rather sometimes it can take quite some time to finish the booting.
Systemd makes the system more "windowish" with its registry and paralell dependancy. I don't like that. I don't like blue screens, nor segmentation faults, nor services that don't start and run reliably.
If you are setting up openSUSE 12.3 - Do regular image backups, to be able to revert when something goes berserk, and thrashes the system configuration.
You can't trust Yast on 12.3. It needs a good rework.
And i think the work effort in version 12 should have been put into hardening Yast, instead of adding bells and wistles.
I have tried other linux distros on the same hardware, and it installs flawlessly. I'm baffled by the fact that console video seem to be the biggest hurdle for installing openSUSE 12.3 while the competitors have no such issues.
How difficult can it be? A basic video driver for a basic installation display system.
If it wheren't for all those bugs, it would be the perfect linux distribution for desktop as well as servers.
I'm struggling along with 12.3 to migrate some systems from 11.4 and hoping for a 12.4 version that is as good and stable as the 11.4.
But i would be equally happy with a continued update and extra repo support for the 11.4, because it just works.
I'm also about setting up a high performance compute cluster, but have decided to use CentOS for that instead of SUSE - Because setting up a cluster with an OS release that is a bugbucket is probably not going to end well.
Still, the light in the tunnel is that 12.3 is the first version 12 openSUSE that i have managed to get installed at all.
For me there is only one thing better with version 12.3 than 11.4, and that is the update and extra repos.
(I'm not a bells and wistles kind of guy).