Owner's Manual

10 Installation Instructions and Important Information
This is due to a bug in the bounce buffer section of the core SUSE Linux
Enterprise Server 9 memory management (mm) kernel code. A patch for this
bug is available in kernel 2.6.5-7.252 and later. A temporary workaround for
this bug is to restrict the memory of the SUSE Linux Enterprise Server 9
configurations to less than 3 GB either by physically reducing RAM or passing
the mem=<some value less than 3 GB> parameter to the kernel
command line at boot time.
Problems Installing SUSE Linux Enterprise Server 9 With a CERC SATA
Six-Channel RAID Controller
You cannot install SUSE Linux Enterprise Server 9 Gold (2.6.5-7.97 kernel)
onto a system that contains a Dell CERC SATA six-channel RAID controller.
If done so, the installation fails and the controller moves the hard drives into
an offline state. This is due to a bug in the aacraid driver module, and the issue
is resolved in SUSE Linux Enterprise Server 9 SP 1 (2.6.5-7.139 kernel) and later.
Performing Nonanonymous FTP Installations
If you are installing SUSE Linux Enterprise Server 9 via nonanonymous (that
is, username and password required) FTP and using an absolute path on the
file system, you must add %2f in front of the leading forward slash (/). For
example, if the FTP server is ftp://domain.com, the username is user, and the
path to a file on that server is /srv/ftp, the FTP URL is
ftp://[e-mail]/%2f/srv/ftp.
Possible Segmentation Fault in Third-Party Applications With New
Support for NX
Some Dell systems support the Execute Disable (XD) or No Execute (NX)
feature offered with some Intel processors. By default, SUSE Linux Enterprise
Server 9 uses XD support. This might result in unexpected segmentation
violations (SEGV) with some of your third-party applications. Applications
that attempt to execute code on their process stacks, or to execute code in
pages of memory allocated or memory mapped without the EXEC attribute,
causes a SEGV signal to be sent to the process.
For systems running these applications, it is necessary to run these systems
with XD disabled until the third-party vendor can supply a version of the
application compatible with XD. To disable XD, specify noexec=off and
noexec32=off on the kernel parameter line in /boot/grub/menu.lst.
book.book Page 10 Friday, February 1, 2008 2:13 PM