For detailed installation information, see the « openSUSE Documentation » referenced below.

When upgrading from openSUSE 12.1 (or older), openSSH connections will be closed when the new openssh package is upgraded. If you are upgrading with "zypper dup" over SSH, run "zypper dup" inside a resumable terminal multiplexer (e.g., "screen" or "tmux") so that you can re-connect easily, or at least immune to connection loss (e.g., via "nohup").

Some desktop components depend on services provided by systemd only. So while openSUSE 12.2 still has basic support for booting a system with sysvinit as fallback, sysvinit nevertheless is considered deprecated and probably even faulty or broken in some regard. If you have any issues with a sysvinit booted system, use systemd before filing bug reports.

cryptoloop has known weaknesses and is therefore considered obsolete in favor of dm-crypt since years. mount (e.g., via /etc/fstab) and losetup now finally dropped support for cryptoloop. This means old fstab entries that use cryptoloop to access encrypted containers no longer work this way. The containers can still be accessed with dm-crypt (/etc/crypttab), though. Refer to http://en.opensuse.org/Encrypted_Filesystems for examples how to use to the new method.

If encrypted partitions are not automatically mounted when using systemd, the noauto flag in /etc/fstab for these partitions could be the cause. Replacing this flag with nofail will fix it. For instance, change the following line:

/dev/mapper/cr_sda3  /home   ext4    acl,user_xattr,noauto 0 2

por

/dev/mapper/cr_sda3  /home   ext4    acl,user_xattr,nofail 0 2

With openSUSE 11.3 we switched to KMS (Kernel Mode Setting) for Intel, ATI and NVIDIA graphics, which now is our default. If you encounter problems with the KMS driver support (intel, radeon, nouveau), disable KMS by adding nomodeset to the kernel boot command line. To set this permanently using Grub 2, the default boot loader, add it to the GRUB_CMDLINE_LINUX_DEFAULT kernel default load options line in your /etc/default/grub text file as root and running the terminal command

sudo /usr/sbin/grub2-mkconfig --output=/boot/grub2/grub.cfg

for the changes to take effect. Else, for Grub Legacy, add it to the kernel command line in /boot/grub/menu.lst, also done as root. This option makes sure the appropriate kernel module (intel, radeon, nouveau) is loaded with modeset=0 in initrd, i.e. KMS is disabled.

In the rare cases when loading the DRM module from initrd is a general problem and unrelated to KMS, it is even possible to disable loading of the DRM module in initrd completely. For this set the NO_KMS_IN_INITRD sysconfig variable to yes via YaST, which then recreates initrd afterwards. Reboot your machine.

En Intel sen KMS, o servidor X volve ao controlador fbdev (o controlador intel só soporta KMS); alternativamente, existe o controlador "intellegacy" (paquete xorg-x11-driver-video-intel-legacy) que aínda soporta UMS (User Mode Setting). Para empregalo, edite /etc/X11/xorg.conf.d/50-device.conf e modifique a entrada do controlador para intellegacy.

En ATI para as GPUs actuais, usa radeonhd. En NVIDIA sen KMS, úsase o controlador nv (o controlador nouveau só soporta KMS). Nota, os novos GPU de ATI e NVIDIA volven fbdev se especifica o parámetro nomodeset aos parámetros de inicio do kernel.

By default, openSUSE now boots using systemd. In case of trouble, you can try to switch back to the deprecated sysvinit way by pressing the F5 key on the boot. For more information about limitations when booting with sysvinit, see Sección 4.2, « sysvinit Deprecated ».

systemctl só soporta os parámetros "estándar" (vexa http://www.freedesktop.org/wiki/Software/systemd/Incompatibilities).

Pode evitar este novo comportamento chamando ao script de inicio directamente, por exemplo:

cd /etc/init.d
./apache2 <os_seus_parámetros>

Para deter e apagar o sistema com systemd, execute halt -p ou shutdown -h now na liña de ordes ou empregue a opción apagado do seu escritorio.

Nota: un simple halt non apagará axeitadamente o sistema.

systemd mounts several directories that are meant to contain volatile data only, as tmpfs filesystems: /run, /var/run, /var/lock, and /media are those directories. For background information, see http://lwn.net/Articles/436012/.

Note: Do not store files that are meant to survive a reboot, in /run, /var/run, etc.

systemd maintains directories as specified in the tmpfiles.d directories and in /lib/systemd/system/systemd-tmpfiles-clean.timer. For more information, see the tmpfiles.d manpage.

By default, systemd cleans tmp directories daily as configured in /usr/lib/tmpfiles.d/tmp.conf:

d /tmp 1777 root root 10d
d /var/tmp 1777 root root 30d

Note: systemd does not honor sysconfig variables in /etc/sysconfig/cron such as TMP_DIRS_TO_CLEAR.

Gnome and Xfce now use udisks2 to automatically mount USB media under /run/media/$USER. KDE still uses udisks version 1 and mounts USB media under /media.

The third line of /etc/adjtime now contains information whether your BIOS clock runs on UTC or in local timezone (previously stored in HWCLOCK in /etc/sysconfig/clock).

If /etc/adjtime contains wrong drift information (for example after fixing date and time with ntpdate or have ntpd running), set the variable USE_ADJUST to "no" in /etc/sysconfig/clock.

GNU tar now defaults to --format=posix and create POSIX-compliant archives with PAX extended headers. Check whether your scripts and applications are compatible with this format.

The former behavior (and upstream default) can be restored by setting the environment:

TAR_OPTIONS='--format=gnu'

or

TAR_OPTIONS='--pax-option=delete=[ac]time*'