Kernel 2.6.30 for Ubuntu-Jaunty (Page 1 of 3)

The AppArmor module is not included - oops.
But don't hold your breath - it is not in the mainstream kernel.

- - - -

Does anyone even use that feature on a tiny netbook???

- - - -

The machine just completed a 133 package dist-upgrade -
Well, not sure about that - the foolish dist-upgrade scripting updated the initrd for 2.6.30 with
modules for 2.6.28 - luckly, they will not load (because the versions don't match).

Looks like I had better "pin" the initrd against such changes - or learn to run the distro kernel
when doing apt-get dist-upgrade. 

The AppArmor question - -
It is a Novell patch-in product - -
The newest in the novell public repository is for 2.6.26 -
The newest in the ubuntu-jaunty repository is for 2.6.28 -
- - - -
I don't use it myself and can't think of anything that would justify messing up the kernel with it, so -

update-rc.d -f apparmor remove

Now it will never be started, hence it doesn't generate a "missing module" message on kernel boot for 2.6.30
Note: the above only effects the runlevel initialization links - the apparmor package is still installed.

Cleaned up a few things - diddled with hibernate for awhile:

ACPI: Preparing to enter system sleep state S4
PM: Saving platform NVS memory
PM: Creating hibernation image:

- - - snip - - -

PM: Restoring platform NVS memory
ACPI: Waking up from system sleep state S4

- - - snip - - -

PM: Image restored successfully.
Restarting tasks ... done.

Mark that one off the to-check list, hibernation (A.K.A: suspend to disk) works.

Note:
Earlier kernels just used the first (or only) swap partition - this one, you have to tell it
which swap partition to use, even if you only have one. 

If your disk layout is the same as at the head of this thread, then make your kernel command line like:

kernel          /boot/vmlinuz-2.6.30-rc1-ce1200v root=/dev/sda1 resume=/dev/sda2 ro quiet splash

For 2.6.30-rc1-ce1200vd (yeah, there is a v, va ... vd now - in my build system, not posted):

Wake from Sleep (suspend to ram) to desktop restored: 7 seconds
Wake from Hibernate (suspend to disk) to desktop restored: 65 seconds (using stock "too slow" disk drive)
- - - -
Those numbers are for the stock Jaunty (slow boot) distribution - not any of the "instant on" specials.
I am sure those numbers will improve as I get things a bit more refined.

After having a night's sleep on the Wifid problem - -
see: http://forum.netbookuser.com/viewtopic. … 6714#p6714 and the following posts - -

The kernel already supports platform-specific, function-key drivers -
I will try to "clone" one of those for the Cloudbook - it may only handle the Wifi key but better than "rolling my own" solution.

The packages for the kernel.org development head of this morning is up as 2.6.30-rc2-ce1200v
The directions remain similar to those of the first post in this thread.

The major changes are in the configuration - it has become more Cloudbook specific - in general,
any hardware built into the machine has drivers built into the kernel (which makes it faster to boot, among other things).

Still no power on/off control to the Wifi card - I am still working on those bits (pun intended).

Your /boot/grub/menu.lst file might look like this after you edit for this kernel install:

# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST

title           Ubuntu jaunty - kernel 2.6.30-rc2-ce1200v
root            (hd0,0)
kernel          /boot/vmlinuz-2.6.30-rc2-ce1200v root=/dev/sda1 resume=/dev/sda2 ro quiet splash
initrd          /boot/initrd.img-2.6.30-rc2-ce1200v
quiet

title           Ubuntu jaunty (development branch), kernel 2.6.28-11-generic
root            (hd0,0)
kernel          /boot/vmlinuz-2.6.28-11-generic root=/dev/sda1 resume=/dev/sda2 irqpoll ro quiet splash
initrd          /boot/initrd.img-2.6.28-11-generic
quiet

### BEGIN AUTOMAGIC KERNELS LIST
## lines between the AUTOMAGIC KERNELS LIST markers will be modified
## by the debian update-grub script except for the default options below

Of note with this kernel - the "initrd  . . ." line is not required to run the machine.
You can check that by using the GRUB menu editor at boot-time to just delete that line.

I don't intend that this kernel be used without that line (not yet) - but it just goes to show
that we can now replace the early user space image (and Ubuntu scripting) with something
more suited to our little machine.  I.E: the beginnings of a "Fast Boot" kernel. 

The packages for 2.6.30-rc3 are now posted - - - Same old place:

http://hp-umpc.com/ce1200v/

  <<-- you have to cut&paste that link - it does not "click".
The directions remain the same as the first post in this thread, only the names have changed.

Of note: The folks at kernel.org found and fixed a bug in "hibernate" - -
I am seeing a 57 second "wake-up time" from a Class 6 SDHC card (slower than the "too slow" hard drive).
Wake-up from "sleep" (A.K.A: suspend to ram) is still running under 7 seconds.

Now, back to the wifid replacement. 

Last edited by mikez (2009-04-23 9:08:52 am)

Thanks for checking it for me.
Without people trying it, it can never be better than "works for me". 

We know that the Sylvania G is *very similar* - but no idea if it is *exactly the same*.
Could you post your /var/log/dmesg file?
If you don't have a place to post it - PM me, I'll give you an e-mail address to use.

Noting jumps out and strikes me between the eyes - - I kept a copy for more careful reading.

You can enable "hibernate" (suspend to disk) if you want to:

Your current kernel command line:

Kernel command line: root=UUID=060c7171-f08e-4565-bb52-f6de288c0cb3 ro quiet splash 

The attempt to wake from hibernate:

PM: Starting manual resume from disk
PM: Resume from partition 8:5
PM: Checking hibernation image.
PM: Resume from disk failed.

Partition 8:5 is also known as your swap file:

Adding 1253028k swap on /dev/sda5.  Priority:-1 extents:1 across:1253028k 

So if you make your kernel command line look like:

Kernel command line: root=UUID=060c7171-f08e-4565-bb52-f6de288c0cb3 ro resume=/dev/sda5 quiet splash 

Then your Hibernate (suspend to disk) will work.
But that is optional, not part of your problem.

Found the problem, should have a corrected -rc3 package up in about an hour (1/2 hour for build, 1/2 hour for lazy).
_OR_ the kernel.org developers should have a -rc4 up in another day or two.
(I had to edit the kernel build files to get the synaptics driver to build, someone had marked it: "embedded only"). 

That is a very, very, old post - on 2.6.27

You can find the tuning knobs for cpufreq/power here:

ls /sys/devices/system/cpu/cpu0/*

The "thermal" module is described here:
linux-<version>/Documentation/thermal/sysfs-api.txt

You can find the tuning knobs for thermal here:

ls /sys/class/thermal/*

That is on kernel:

So it got built this time (as did the touchpad driver) - now posted in the usual place.
(Also the joy stick driver - but I'll whack that turkey later.)

I am making the power control to the Wifi card my #1 priority at the moment - but if you discover anything
about the cpufreq/power/thermal controls, let us know.