[Libreboot] Thinkpad x200 with Libreboot 20160818: problem booting from USB

[Marcel Maci]

Hi all,
I get strange behaviour with Libreboot 20160818 on Thinkpad x200. When Grub 
shows up, I select "Boot from usb". It then loads the Trisquel menu where I 
select whatever I want (e.g. install, boot from live cd) and I get the error 
message:

Error: USB mass storage stalled
Error: you need to load kernel first

Press any key to continue

I tried the same with another usb-stick with Tails and it booted without any 
complaint (tried several times).
Other strange behaviour: sometimes I get a "kernel panic" message with the 
uppercase led blinking and the system stops (this can occur with both sticks, 
but with Tails the message just pops up a fraction of a second and then it 
continues booting). Does anybody know what the problem could be?
BTW: flashing the x200 was very slow (due to bad connection with the clip I had 
to reduce speed to 128 and it took 1.5 hours (!) - I also had to specify 
manually the "MX25L6405D" with the -c option), but the content of the flash 
chip seems to be correct (it said VERIFIED in the end).
Thx and greetings,
Marcel



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