Re: [HOWTO] Compiling new kernels on Harmattan device
 

Working fine with NAT Exfat kernel with ubiboot
and can optimizer include it?

Re: [HOWTO] Compiling new kernels on Harmattan device
 

Which toolchain do you build with?

I saw this in the kernel-plus topic:
The kernel builds properly when using Sabermod's Linaro GCC 4.8 cross-compile toolchain for ARM EABI.

It doesn't boot, though.

NON-Linaro information:

I've recently picked up a spare N9 (smashed screen, though) hwrev 1607, and K+ boots just as often as Harmattan on it.

On hwrev 1507, it just hangs at kexec. Finicky.

http://talk.maemo.org/showpost.php?p...4&postcount=77

Re: [HOWTO] Compiling new kernels on Harmattan device
 

When I compile ubiboot kernels I am using the Linaro 4.6.3 arm-linux-gnueabi-gcc compiler. However, Harmattan kernels I build in the traditional scratchbox environment;

[sbox-HARMATTAN_ARMEL: /usr/src/kernel-2.6.32_plus_nat_extfat] > gcc --version
sbox-arm-none-linux-gnueabi-gcc ('cs2009q3-hard-67-sb16') 4.4.1
Copyright (C) 2009 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[sbox-HARMATTAN_ARMEL: /usr/src/kernel-2.6.32_plus_nat_extfat] >

Well, I have found out th hard way that HWREV really makes the difference. Some devices take almost anything, like my trusty 1501, and some are so-so, and need to boot several times just to get a kernel running (if even then...?)

Re: [HOWTO] Compiling new kernels on Harmattan device
 

Mine is 1601 (normally boots everything...).

--
So, I am not alone (at least ;)).

Re: [HOWTO] Compiling new kernels on Harmattan device
 

Why on earth are some revs so picky, can that be overcome eventually?

Re: [HOWTO] Compiling new kernels on Harmattan device
 

Well I don't know that for sure, if I did it wouldn't be such a problem any longer, would it? :D

The problems are all with getting Harmattan starting up correctlly. With Nitdroid or Nemo it's trivial, those can run on any HWREV with no problem whatsoever. Harmattan is exceedingly picky, bordering on fragile on how it starts up...

What I suspect is different HWREV boards have a bit different components/chipset/firmware and of course when Nokia made it they tested/debugged all with their official kernel and tuned the bootchain accordingly in each PR release.
I have no luxury like this, with my own device (rev.1501) I can do what I can to tune it but support on other HWREVs is not so easy. :mad:

Re: [HOWTO] Compiling new kernels on Harmattan device
 

True, it was a rhetorical Qn more than anything else :)

Re: [HOWTO] Compiling new kernels on Harmattan device
 

So strange. I am using kernel-plus with nat binary download. On first flash, everything was fine. Later, it seemed my bluetooth tethering just wouldn't work (couldn't connect second device). I rebooted. Then it went into a reboot loop. I was freaked out. Then I just let it sit for a minute and eventually it did boot. I'm still running it now. However I experience issues with reboots. Not sure if the plus patches have really bought me anything here other than more random instability.

Anyone care to comment regarding stability?

I could compile plus myself on device and see if that somehow makes a difference.

Re: [HOWTO] Compiling new kernels on Harmattan device
 

I have been running on the plus kernel since I compiled it, something like 2 weeks ago and then with the extfat-patched kernel for about a week or so.
Not once have I encountered any random instability. Granted, I do not overclock my device and have only fairly light tweaks on it, just basic Open Mode stuff.

@juiceme have you test the exfat yet?