Subject: Note on Updating the Kernel for the Fedora2 tcs3 computers 
   Date: 2004-08

0. Intro

Updating the kernel require a bits of work due to:
   1. We develop our own modules (pmac.o), this requires use to compile the kernel source
   2. Install NVIDIA drivers for twinview support (requires compiling the kernel).
   3. Fedora's 2.6.7-1.494.2 has limited mqueue msg_max. Requires modification to kernel source.

Note on upgrading from the 2.6.6-1.435custom to 2.6.7-1.494.2.

1. Modify /etc/inittab to not boot into X.

2. Install/Compile new kernel & source

   Used up2date to install kernel & kernel-sourcecode for 2.6.7-1.494.2.2
   Modify grub under /r0 to boot the new kernel
   Reboot to 2.6.7

3. compile custom kernel (running under upgraded kernel)

   create /usr/src/linux-2.6-> link to desired sources.
   compiles and install:
   # cd /usr/src/linux-2.6
   # make clean
   # make mrproper
   # make oldconfig    -> generate a .config file based on the running kernel.
   # make menuconfig   
      -> changed default to accomodate NVIDIA driver
      Device Drivers->Graphics support->nVidia Riva support -> NO
      Device Drivers->USB support->EHCI HCD (USB 2.0) support -> NO

      Edited /usr/src/linux-2.6/ipc/mqueue.c to make 
         msg_max: DFLT_MSGMAX 40 (was 10). 
         msgsize_max: same (was 8129)
         queues_max: 64 (was 256)
         cd /proc/sys/fs/mqueue; cat msg_max msgsize_max  queues_max

   # make bzImage 
   # make modules
   # make modules_install
   # make install

   reboot to new kernel.

4. re-Install the NVIDIA driver. Must be done after compiling new kernel.

   # cd /home/tcs3/public_html/systems/tcs3/computers/linux/0407-nvidia
   # sh NVIDIA-Linux-x86-1.0-6106-pkg1.run.txt

   Modify /etc/inittab to boot into X.