Sean the Sysadmin

Trying to install Geant4 on a Ubuntu VM, and enable the OpenGL extensions Complains about missing OpenGL during configure 1) apt-get install libx11-dev mesa-common-dev 2) Point Geant4 to /usr for OpenGL (file is actually at /usr/include/GL/gl.h)

So I'm trying out RHEL6 to install on my new NFS server. All is going well, until it comes to getting LDAP user information. The new setup on RHEL6 is to use the SSS daemon. It is configured using authconfig. My LDAP database requires TLS, and simple binding to get any user information, including just NSS related stuff. So, I thought that would mean just running this command: authconfig --enableshadow --enablesssd --disablesssdauth --enablecache --enablelocauthorize --update This results in: [domain/LDAP] id_provider = ldap #auth_provider = ldap ldap_schema = rfc2307 ldap_uri = ldap://***** ldap_search_base = ***** ldap_default_bind_dn = ***** ldap_default_authtok_type = password ldap_default_authtok = ****** ldap_tls_reqcert = demand cache_credentials = true enumerate = true entry_cache_timeout = 5400 ldap_tls_cacert = /etc/pki/tls/certs/ca-bundle.crt But, doing a /etc/init.d/sssd restart doesn't make user information work. id username yields an...

I have a Xoom, and a Galaxy S, and need to be able to compile my own tun.ko for the kernel version I have. As you all know, if the kernel version of the module you are trying to insert isn't the same, it won't insert, and will give you errors like: <3>[95175.874872] tun: version magic '2.6.36.4-athm1-OV-launchpad-1.2.2+ SMP preempt mod_unload ARMv7 ' should be '2.6.36.3-gc2bee64 SMP preempt mod_unload ARMv7 ' in dmesg. We need to compile the module for the right version of the kernel Download the Kernel source - normally from  http://android.git.kernel.org/ . The Xoom can be found at  http://android.git.kernel.org/kernel/tegra.git , and the Galaxy S can be found at  http://android.git.kernel.org/kernel/samsung.git . Use $ pwd    /scratch/xoom $ git clone  http://android.git.kernel.org/kernel/tegra.git  to clone the Xoom kernel source Copy your old kernel config from your device $ pwd    /scratch/xoom $ adb pul...

I decided to start this blog because of the never ending battles I have with remembering what I have conquered before, and thinking that other people have the same problems. The specific problem I was working on when I came to this conclusion was preseeding a Natty netboot install. EVERY version of Ubuntu brings more preseeding problems - something always changes, causing you to get prompted for something new, when the previous release worked without a hitch. This time (going from Lucid to Natty) was the keyboard layout preseed. I got the dreaded keyboard layout screen. Turns out the preseed file is only looked at once the locale is set (makes sense), so you have to pass the keyboard config in the kernel line of your PXE boot: LABEL stuff_natty64 kernel linux.natty64 append vga=normal initrd=initrd.gz.natty64 locale=en_AU preseed/locale=en_AU keyboard-configuration/layoutcode=us console-setup/ask_detect=false netcfg/wireless_wep= netcfg/choose_interface=auto netcfg/get_hostname= n...