linux-kernel - Re: Samsung N130 ATA exception after 5min uptime -- Phoenix FailSafe issue?

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Message-ID: <20091129005157.GA6487@sig21.net>
Date:	Sun, 29 Nov 2009 01:51:57 +0100
From:	Johannes Stezenbach <js@...21.net>
To:	Greg KH <greg@...ah.com>
Cc:	Robert Hancock <hancockrwd@...il.com>,
	Mikhail Malygin <mmalygin@....de>,
	Hans Werner <hwerner4@....de>, Tejun Heo <tj@...nel.org>,
	Thomas Renninger <trenn@...e.de>, linux-kernel@...r.kernel.org
Subject: Re: Samsung N130 ATA exception after 5min uptime -- Phoenix
 FailSafe issue?

On Sat, Nov 28, 2009 at 04:17:45PM -0800, Greg KH wrote:
> On Sat, Nov 28, 2009 at 11:22:03PM +0100, Johannes Stezenbach wrote:
> > 
> > BTW, at 5min after boot it is 99% guaranteed that this ATA
> > exception will happen during the occasional fsck. That
> > doesn't feel right.
> 
> Well, I've never been doing a fsck at 5 minutes into boot, and neither do
> most Windows users :)

I've been through a lot of reboots with all the testing, and
the fsck took longer than 5min, and the ATA exception  struck.
fsck continued after the 30 second stall and succeeded.

> > but it would be better they'd support ACPI.
> > I mean if they have to support it for Windows 7 anyway, then
> > what's the point of not supporting it for other OSs?
> 
> Hey, no argument from me here, but I think the main issue is that they
> do not officially support Windows 7 on this platform yet either.  Hence,
> no ACPI support.  The ACPI support in the latest BIOS seems very rough,
> I think this is the first time they have ever implemented ACPI, so I
> would not count on it working properly just yet.

You can buy it officially with Windows 7 now, it seems to be fully supported.
http://www.samsung.com/us/consumer/office/mobile-computing/netbooks/NP-N130-KA04US/index.idx?pagetype=prd_detail&tab=support

> > While were at it I have another question:  When running on battery the
> > ethernet throughput drops to ~25Mbit/s.  After a bit of experimenting
> > I found that this is connected to a BIOS entry about "CPU Power
> > Saving Mode".  lspci shows that this changes "LnkCtl: ASPM L1
> > Enabled" to "LnkCtl: ASPM L0s L1 Enabled".  Having this config
> > option in the BIOS is inflexible.  IIRC there was an app in
> > Windows which allows to configure it at runtime.  Do you
> > know how to do it in Linux?
> 
> I do not konw anything about this.  Are you saying that Windows would
> allow you to turn the throughput back up at the expense of battery life
> through an application?  Do you know what that application is called and
> where I could find it?

I haven't actually tested throughput in Windows, but ISTR that there was
a Samsung app where you could configure various power saving features.
Might have been the "SAMSUNG Battery Manager".


Thanks,
Johannes
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