t400 lenovo - is intrepid dangerous?

Jonathan Carter (highvoltage) jonathan at ubuntu.com
Mon Sep 29 21:08:40 UTC 2008

Hi Paul

The issue hasn't been quite resolved yet, but the modules that are
potentially dangerous have been removed from the daily builds. So, while
the daily builds won't be dangerous to your machine, your ethernet won't
work just quite yet either. The issue will probably be resolved by the
time Intrepid is released. The issue is an upstream problem in the Linux
kernel, so I'm quite sure that many people are doing whatever they can
to get it fixed.


Paul Gupta wrote:
> I have heard, from the following forum, and several others, that the
> upcoming kernel in intrepid as well as the e1000e (or e1000 driver, I'm
> not sure which one ubuntu includes)
> is !!!_DANGEROUS_!!! for the t400 series computer's wired ethernet card,
> and that the wireless  may be buggy
> are these things still true? I'm not sure if this bug is getting the
> attention it deserves...nor do I even know how to check the current status!
> Could you help me figure out if the upcoming kernel (and provided
> drivers) will be compatible with this laptop computer? (and safe!!?)
> Thank you,
> Paul Gupta
> (information gathered from below)
> ----
> taken from this forum post:
> http://forums.debian.net/viewtopic.php?p=178498&sid=ecffeefb62e130c41779d02a141a2e83
> An update:
> No, I actually haven't got linux onto this thing yet, for several reasons.
> Here's the first:
> Some websurfing revealed that there's been a bug discovered that can
> permanently damage hardware when the 2.6.27 experimental kernel is run
> with chipsets that need the e1000e module (like the one my ethernet
> hardware would have to use).
> Read carefully:
> http://forum.notebookreview.com/showpost.php?p=3969220&postcount=18
> In other words: My sense from surfing around the web is that other T400
> users have not yet consistently been able to use the Intel 5300 WiFi
> Link for their wireless without resorting to the 2.6.27 kernel, which we
> now know has a bug that would probably fry my ethernet card.
> Until people who know more than me get these problems sorted out, I'm
> going to hold off on linux on my T400.
> Otherwise the machine is great. And yes, the brightness of the LED
> monitor is easily adjustable. If you're really set on it, I would get
> one with one of the less-new wireless devices - seems like there's
> better support for those.
> BTW, I had to fool around in the BIOS to get the debian install cd to
> work. I set the Display to disable switchable graphics, and held them at
> "Discrete" (the ATI video card). I also needed to switch the SATA
> settings to "Compatibility" in order for the cd to be recognized. I do
> not know why.
> -BBB

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