DESY Scientifix Linux 5 - SLD5
The Scientific Linux -DESY- SLD5 release 9 in 32/64 bit version, is the current release of Scientific Linux. It is the standard installation on the grid and the NAF, and on an large amount of desktop PCs. See the DESY scientific linux pages for more information on Scientific Linux.
A backup of your data will be performed by the IT prior to the installation. However, cleaning up the /scratch directory before the installation might be useful, as every new version of the OS requires more space on the hard drive and large amounts of data on /scratch might cause problems.
SLD4/SLD5 Known Issues
Some commands changed between SLD4 and SLD5:
- pine does not exist in SLD5, use alpine instead. Be aware that this will not automatically use your old pine configuration, you will have to configure it again.
- gv may cause some troubles. Try the following
[flcXX]~ mv .gv .gv_old
- the printing system changed from lprng to cups. To get the old printer functionalities
- use slpq instead of lpq
- use slpr instead of lpr
the Pinball theme for firefox that was flc standard in SL4 does not work with the new firefox version. A nice replacement is the Classic Compact theme in combination with the Classic Compact Options Add-on, which allows you to adjust the theme.
- two screens: if a nice admin has installed the driver and configures the nvidia settings: in SL5 "Twin View" seems to work best (while in SL4 separate x screens was the choice).
- in SL4 (and 3) a ~/.Xmodmap file (used to change or extend the keyboard layout) in the home directory was read in automatically by default. In SL5 this does not work automatically anymore. To activate your xmodmap settings you have to create the following a script in the KDE Autostart directory:
[flcXX]~ touch .kde/Autostart/keyboard.sh [flcXX]~ chmod 750 .kde/Autostart/keyboard.sh
- And then add the following lines to it:
- After a restart of KDE, the keyboard layout settings should work in all applications.
- Printing PDF files:
The recommended way to be able to use a printer is to add a file named ".cupsrc" to your homedirectory: this file should then have the line " ServerName cups-hep.desy.de ". Then all the printers should be in the list of acrobat reader.
- In the new Acrobat Reader, unfortunately not all printers are listed there (although the common ones are). You can work around this either choosing in the Acrobat reader as Printer name "Custom" or by using kpdf. For kpdf, choose in the printing menu the "Print system currently used" the option "Print Through an External Program (generic)". The "Name" of the printer should read "PS_printer" now. In both cases, you have a command line where you can enter the printing command. Remember to use the slpr command instead of lpr, i.e. "slpr -Pflcps3".
- In the Acrobat Reader there was the problem that the flcps3 printer prints DIN-A4 documents on A3 paper. This should be fixed now. If it still occurs for you, contact UCO. As an intermediate solution, you can change in the printer properties the option "Media Source" to either "Tray 3" or "Large Capacity Tray" (both are equal). Another possibility is to choose as printer "Custom" and enter the printing command as under SL4, but with "slpr" instead of "lpr".
- In SL5, there can be the problem, that after a while you cannot start programs from the taskbar (error message: "KLauncher could not be reached via DCOP.") and from the start menu (without error message) anymore. Also, the konqueror file browser can fail loading a directory with the message "Cannot talk to klauncher". Instead of logging out and in again to solve this problem, you can also start kdeinit again on the command line. If you have no konsole running, you can start one from the menu that appears at a right klick on the desktop.