yes. mer install -> install bootmenu -> add ubuntu.item -> refresh_bootmenu.d. I don't know what the problem is. what happends after the white screen with "staring linuxrc from ....." normally? the splash? my ubuntu.item is: ITEM_NAME="Jaunty on internal card, p3" ITEM_ID="Jaunty on internal, p3" ITEM_DEVICE="mmcblk0p3" ITEM_MODULES="mbcache jbd ext3" ITEM_FSTYPE="ext3" ITEM_FSOPTIONS="noatime,ro" ITEM_LINUXRC="linuxrc" and does refresh_bootmenu.d and install bootmenu in the menu utilities do the same job?
Using device names directly may not always work with Diablo kernel. Device names for card slots can change at boot time. It is better to use ${EXT_CARD}p2 See https://bugs.maemo.org/show_bug.cgi?id=2747 for details and feel free to vote for it.