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[Christiansen <930447@xxxxxxxxxxxxxxxxxx>]

This is absolutly amasing news guyes, had lost any hope that this status
on this bug would ever change. Thankyou to the most persistent advocats
arguing this bug should be solved, and not least to Chris and others
involved in figuring out howto...

After reciving these great news, the first thing I did was to download the Kubuntu Trusty daily image (2014.03.06) from cdimages.ubunut.com. Used a 12.04.4 box an flashed the Trusty ISO to an USB stick, using the "Start Disk Creator" a so often before. Booting my good old ThinkPad R51 from the USB stick, just to eksperience the "your CPU i not supported ... no PAE". Restarded the R51 and added the kernel "forcepae" parameter to the syslinux parameter line.
Things looked excactly the same as so often before, installing any sort of 12.04 ubuntu flavors. Back to the other ubuntu box, re-fdisk and format the USB, "Start Disk Creator" and then ever so often used grub2 installation to USB when creating 12.04.x USBs for older hardware: 

 sudo grub-install --recheck --boot-directory /media/usb-stick/boot /dev/sdX
 nano /media/usb-stick/boot/grub.cfg

menuentry 'Start Kubuntu' --class ubuntu --class gnu-linux --class gnu --class os {
	recordfail
	insmod gzio
	insmod part_msdos
	insmod ext2
	set root='(hd0,msdos1)'
	echo	'Indlaeser Linux 3.13.0-16-generic-pae ...'
	linux	/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity quiet splash --
	echo	'Indlaeser startramdisk ...'
	initrd	/casper/initrd.lz
}

Returned the stick to the good old R51, at it just booted from the USB
like a charm - just amasing. So right now upgrades from Precise to
Trusty should work correct ?, but the old syslinux "original" of this
bug still persist right ?.

So new users, and users unaware of this bug, will still experienc
problems booting CDs or USB sticks created from ISOs, which with all the
good work and all the posting above seems almost unbearable to me...

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/930447

Title:
  Unable to start Ubuntu 12.04 live CD with syslinux loader on Pentium M
  x86 Laptop due to bug in PAE kernel, initramfs or syslinux

Status in “linux” package in Ubuntu:
  Fix Released
Status in “syslinux” package in Ubuntu:
  Invalid
Status in Baltix GNU/Linux:
  Triaged

Bug description:
  Ubuntu 12.04 doesn't start from Desktop CD or USB with syslinux boot
  loader on Pentium M 1.6Ghz or faster Pentium M CPU - displays error
  message about missing PAE feature in CPU, but *the same* *Ubuntu
  12.04* Desktop CD/LiveUSB starts fine on *the same CPU* (and same PAE
  kernel) if GRUB boot loader is used, for example when WUBI or LiveUSB
  with GRUB boot loader, like Multisystem
  (http://liveusb.info/dotclear/index.php?pages/install ) is used!

  The error message is:
  "This kernel requires the following features not present on the CPU: pae.
  Unable to boot - please use a kernel appropriate for you CPU."

  THIS IS AN IMPORTANT REGRESSION! People are able to install and successfully use Ubuntu 12.04 on such pretty new hardware, like IBM Thinkpad T42 laptop with Pentium M 1700Mhz processor, but the bug in syslinux (or something related) forbids Ubuntu 12.04 installation.
  This bug is reproducible on lots of computers, there are several log files and /proc/cpuinfo file attached to this bugreport, AFAIK it's enough to reopen this bug.

  ---
  ApportVersion: 1.23-0ubuntu4
  Architecture: i386
  CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
  MachineType: IBM 2373PPU
  dmi.bios.date: 06/18/2007
  dmi.bios.vendor: IBM
  dmi.bios.version: 1RETDRWW (3.23 )
  dmi.board.name: 2373PPU
  dmi.board.vendor: IBM
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: IBM
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnIBM:bvr1RETDRWW(3.23):bd06/18/2007:svnIBM:pn2373PPU:pvrThinkPadT42:rvnIBM:rn2373PPU:rvrNotAvailable:cvnIBM:ct10:cvrNotAvailable:
  dmi.product.name: 2373PPU
  dmi.product.version: ThinkPad T42
  dmi.sys.vendor: IBM

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