one other (rather hackish) hint if you want to test a proper
kernel/initramfs setup as ubuntu uses it:

(well, one way would be to base on a ubuntu kernel package, add your
patchset and just build that, since this will call the proper
postinstall scripts, use the needed configuration options for security
features etc and put things in the right places, but for a quicker way
to test your own build, see below)

a) do a normal install to USB from the imx51 live image (leave the SD card in 
place after installation)
b) copy the "vmlinuz-$version" of the kernel you want to test into /boot on the 
installed system
c) put the branch with modules for this kernel under /lib/modules
d) run: sudo update-initramfs -c -k <$version of the kernel you need the 
initramfs for>
d) run: sudo flash-kernel (so the initramfs gets proper padding and kernel and 
initramfs get put into the redboot patition on SD into the right places)
e) reboot

this will narrow down the possible causes of failure to kernel or
redboot changes and exclude any possibilities of issues caused by a
nonstandard boot setup.

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notification area applets crash on login
https://bugs.launchpad.net/bugs/392716
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