Some of our H.P. T620 thin clients are becoming stuck at the P.O.S.T. screen (H.P. boot logo) after upgrading to 10.04.100, and only a C.M.O.S. reset makes them boot. I have not been able to reproduce it on any of my ‘personal’ thin clients. Has anyone else seen this? Does anyone know how we might be able to prevent it?
It probably has something to do with the UEFI/secure boot that 10.04 introduces. Do you have a BIOS settings menu on the T620 that you can toggle UEFI or secure boot to try and replicate?
I might have figured out something related. I noticed that when I run efibootmgr after the update, the first option in the boot list is a U.S.B. hard drive. I remounted the efivars filesystem read/write and changed the boot order so that the Igel E.F.I. partition is first. That seems to prevent the boot problem from happening. Thank goodness that I’m a Gentoo user, since I might not have known about or used efibootmgr otherwise. 🙂
Simple one-line command:
mount -o remount rw /sys/firmware/efi/efivars && efibootmgr -o $(efibootmgr | grep IGEL_EFI_1 | sed ‘s/*//’ | awk ‘{print $1}’ | sed ‘s/Boot//’)
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