>>>>> On Mon, 3 Sep 2018 15:34:34 +0200, Steffen Grunewald 
>>>>> <steffen.grunew...@aei.mpg.de> said:

    >> I suggest you to retrieve the version of SYSLINUX 6.04; look here for 
more
    >> informations :
    >> 
https://groups.google.com/a/lbl.gov/forum/#!msg/warewulf/klTLgX-L4nw/IJZo3-jgAAAJ

Now I rembember that not the BIOS update fixed my Thinkpad problem,
but using a newer syslinux.efi from syslinux 6.04 was the proper fix.

-- 
regards Thomas

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