kernel-packages team mailing list archive

[Aki Rossi <aki.rossi@xxxxxx>]

Blacklisting the samsung-laptop module in UEFI mode fixes the related but
separate issue of the kernel crashing on bootup. The root cause of the
bricking was that Samsung's firmware had an undocumented requirement of 5KB
of free UEFI variable space to be able to start up. The kernel crash would
cause a log dump, which could cause the variable store to be filled beyond
this limit. (Matthew Garrett provided a more detailed report in his blog
last year: http://mjg59.dreamwidth.org/25091.html )

Handling of UEFI variables was changed in the kernel (in Ubuntu 13.10 and
newer), and Samsung supposedly made fixes to their firmware, so the
bricking issue is fixed. As far as this bug is concerned, the installation
procedure is to update your firmware to the newest version and then install
Ubuntu as usual.

Driver support for particular laptop models should probably be addressed in
separate bug reports.


On 23 May 2014 21:05, Theis Christensen <christensen.theis@xxxxxxxxx> wrote:

> the so called "fix" has been there for over a year, what is the status on
> this bug?
> is it closed and people has accepted that they have a laptop where not all
> features are working, or is someone working on it?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1040557
>
> Title:
>   UEFI boot live-usb bricks SAMSUNG 530U3C,np700z5c laptop
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu-cdimage/+bug/1040557/+subscriptions
>


-- 
Aki Rossi

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1040557

Title:
  UEFI boot live-usb bricks SAMSUNG 530U3C,np700z5c laptop

Status in Ubuntu CD image build software:
  Fix Released
Status in Release Notes for Ubuntu:
  Fix Released
Status in Release Notes for Ubuntu quantal series:
  Fix Released
Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Oneiric:
  Fix Released
Status in “linux” source package in Precise:
  Fix Released
Status in “linux” source package in Quantal:
  Fix Released

Bug description:
  I cannot provide detailed log massages because laptop is bricked right
  now.

  If you have courage to try it select UEFI boot from bios and than try
  to boot laptop using liveusb (made form Precise Pangolin 12.04.1
  amd64).

  Laptop hangs up in black screen. If you force power-off, after it,
  laptop wont start. I mean it not event start bios, just black screen
  no sounds nothing.

  I filing this report, because i already bricked second laptop. At
  first i thought it was unrelated issue and laptop was fixed by
  warranty service (replaced motherboard), but after second time i quite
  sure.

To manage notifications about this bug go to:
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