I have created a live usb of Ubuntu 12.04 with a 4GB persistence file. Firefox and other software get updated when running update manager. However, the linux kernel will not update and I am unable to install synaptic package manager, ubuntu tweak, etc. Is there a fix for this. Thanks in advance.
i found this solution also on askubuntu and i apply it and worked for me and i share again here:
Comment out line 15
Run the configuration script:
You should see a lot of debugging, and NOT the error line at the end.
To be sure, re-run the configuration. It should end immediately without any logs:
Now, you can restore the zz-update-grub file, just in case you want to install an other kernel later and Grub start to work with overlayfs...