You might want to put a note on your article about Ubuntu 10.4+ for people discovering it recently … like I just did.

and for cpu info when i typed this ” grep flags /proc/cpuinfo ” i got the following flags

flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm

also this command clearly verifies that my CPU suuports PAE
”
grep –color=always -i PAE /proc/cpuinfo”

CPU Modes:( Source Ubuntu Forums )

lm flag means Long mode cpu – 64 bit CPU
Real mode 16 bit CPU
Protected Mode is 32-bit CPU

should i follow ur guide on kernal recompilation as u said above by just changing 2.6.28 with my version ? 2.6.3x ? please help me

One thing I found out following your procedure is that it results in a default debug version of the kernel image which was humongous at 142MB and takes 2 hours on my P4 at 3.2GHz w/hyperthreading. If you add a step in the ‘make menuconfig’ part to choose kernel-hacking and then select N to exclude kernel debugging during the compile you will wind up with a kernel-image in the range of 32MB which takes about 1hr 40min to complete on my system.

My quest is somewhat different than those who are installing Ubuntu. What I am trying to do is to build a LiveCD PAE version of Karmic (9.10). When I substituted the PAE versions of packages for the generic versions in a chrooted environment to build the Lice CD, I ran into three problems:
1) the mount command for a CDROM did not work after booting up the PAE Live CD,
2) iptables depended on the generic version of /lib/modules rather than the -pae version,
3) and there was a 4MB inconsistency in one of the package’s size vs a zero length indicated in the /var/lib/dpkg/info .list version of the files contained in the package – a real stumper.

Thus the search or other means/methods of arriving at a linux-image PAE kernel.

Thanks for all the info – it certainly is a journey!

– Tom

# sudo chmod -x /etc/kernel/postinst.d/nvidia-common

# sudo apt-get purge nvidia-common

root@manav-workstation:/usr/src# dpkg -i linux-image-2.6.31.4-mykernel_2.6.31.4-mykernel-10.00.Custom_i386.deb

(Reading database … 176378 files and directories currently installed.)
Preparing to replace linux-image-2.6.31.4-mykernel 2.6.31.4-mykernel-10.00.Custom (using linux-image-2.6.31.4-mykernel_2.6.31.4-mykernel-10.00.Custom_i386.deb) …
Done.
Unpacking replacement linux-image-2.6.31.4-mykernel …
Running postrm hook script /sbin/update-grub.
Searching for GRUB installation directory … found: /boot/grub
Searching for default file … found: /boot/grub/default
Testing for an existing GRUB menu.lst file … found: /boot/grub/menu.lst
Searching for splash image … none found, skipping …
Found kernel: /boot/vmlinuz-2.6.31.4-mykernel
Found kernel: /boot/vmlinuz-2.6.31-14-generic
Found kernel: /boot/vmlinuz-2.6.28-11-generic
Found kernel: /boot/memtest86+.bin
Updating /boot/grub/menu.lst … done

Setting up linux-image-2.6.31.4-mykernel (2.6.31.4-mykernel-10.00.Custom) …
Running depmod.
Finding valid ramdisk creators.
Using mkinitramfs-kpkg to build the ramdisk.
initrd.img(/boot/initrd.img-2.6.31.4-mykernel
) points to /boot/initrd.img-2.6.31.4-mykernel
(/boot/initrd.img-2.6.31.4-mykernel) — doing nothing at /var/lib/dpkg/info/linux-image-2.6.31.4-mykernel.postinst line 588.
vmlinuz(/boot/vmlinuz-2.6.31.4-mykernel
) points to /boot/vmlinuz-2.6.31.4-mykernel
(/boot/vmlinuz-2.6.31.4-mykernel) — doing nothing at /var/lib/dpkg/info/linux-image-2.6.31.4-mykernel.postinst line 588.
Running postinst hook script update-grub.
Searching for GRUB installation directory … found: /boot/grub
Searching for default file … found: /boot/grub/default
Testing for an existing GRUB menu.lst file … found: /boot/grub/menu.lst
Searching for splash image … none found, skipping …
Found kernel: /boot/vmlinuz-2.6.31.4-mykernel
Found kernel: /boot/vmlinuz-2.6.31-14-generic
Found kernel: /boot/vmlinuz-2.6.28-11-generic
Found kernel: /boot/memtest86+.bin
Updating /boot/grub/menu.lst … done

Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/dkms
run-parts: executing /etc/kernel/postinst.d/nvidia-common
run-parts: /etc/kernel/postinst.d/nvidia-common exited with return code 20

Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-2.6.31.4-mykernel.postinst line 1186.

dpkg: error processing linux-image-2.6.31.4-mykernel (–install):
subprocess installed post-installation script returned error exit status 2
Errors were encountered while processing:
linux-image-2.6.31.4-mykernel

root@manav-workstation:/usr/src#

I guess that the error might be due to nvidia drivers as I don’t have any nvidia graphics card but ATI Raidon card. However, i cannot understand why it is compiling nvidia drivers. I am planning to remove the support for nvidia drivers from “make menuconfig” and give a try again. What do you suggest ??

But I had trouble installing the kernel-image package, I got
…
run-parts: executing /etc/kernel/postinst.d/nvidia-common
run-parts: /etc/kernel/postinst.d/nvidia-common exited with return code 20
Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-2.6.28.10-henningpae.postinst line 1186.
dpkg: error processing linux-image-2.6.28.10-henningpae (–install):
subprocess post-installation script returned error exit status 2
Errors were encountered while processing:
linux-image-2.6.28.10-henningpae
root@mariacron:/data/produktion/tmp#

it could be resolved by removing the package nvidia-common.

(UBuntu 9.04 Jaunty)

But now, I want to use the client kernel… I tried to compile the kernel using your description, but when installing the image package, I get an error:

Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/dkms
run-parts: executing /etc/kernel/postinst.d/nvidia-common
run-parts: /etc/kernel/postinst.d/nvidia-common exited with return code 20
Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-2.6.28.10-mykernel.postinst line 1186.
dpkg: Fehler beim Bearbeiten von linux-image-2.6.28.10-mykernel (–install):
Unterprozess post-installation script gab den Fehlerwert 2 zurück
Fehler traten auf beim Bearbeiten von:
linux-image-2.6.28.10-mykernel

So it seems to have something to do with the nvidia driver, I am using the proprietary one. Could you explain, what you did with the source from the nvidia website? This is the first time, I compiled a linux kernel, so I dont know hiw to get it to work with the graphic drivers.

Thx in advance!
Johannes