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Old 30th January 2013
J65nko J65nko is offline
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Default Booting Linux using UEFI can brick Samsung laptops

From http://h-online.com/-1793958

Booting Linux using UEFI just once on various Samsung laptops is enough to permanently stop them working. Several reports have been posted on the Ubuntu bug tracker, but the problem is likely to also be present in other Linux distributions, as it appears to be caused by a kernel driver for Samsung laptops. Kernel developers are currently discussing a change which would disable the driver when booting via UEFI.
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump
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Old 30th January 2013
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jggimi jggimi is online now
More noise than signal
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...it appears to be caused by a kernel driver for Samsung...
Obligatory, from http://www.openbsd.org/lyrics.html#39
...Blobs are vendor-compiled binary drivers without any source code. Hardware makers like them because they obscure the details of how to make their hardware work. They hide bugs and workarounds for bugs. Newer versions of blobs can weaken support for older hardware and motivate people to buy new hardware.

Blobs are expedient. Many other open source operating systems cheerfully incorporate them; in fact their users demand them.

But when you need to trust the system, how do you check the blob for quality? For adherence to standards? How do you know the blob contains no malicious code? No incompetent code? Inspection is impossible; you can only test the black box. And when it breaks, you have no idea why.
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Old 11th February 2013
comet--berkeley comet--berkeley is offline
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Default Samsung UEFI bug: Notebook bricked from Windows

Linux developer Matthew Garrett, who does a lot of research into UEFI topics, writes in a blog post that by storing a large amount of data in UEFI variables, he managed to disrupt a Samsung notebook running Windows to such a degree that it subsequently refused to start.
From: http://www.h-online.com/open/news/it...s-1801439.html
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