linux-kernel - [BUG 2.6.21-rc3-git9] SATA NCQ failure with Samsum HD401LJ

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Date:	Fri, 16 Mar 2007 12:20:02 +0100
From:	Max Kellermann <max@...mpel.org>
To:	linux-kernel@...r.kernel.org
Subject: [BUG 2.6.21-rc3-git9] SATA NCQ failure with Samsum HD401LJ

Hi,

I have been trying to upgrade my 2.6.19 kernel for a while now,
without success.  All kernel versions since 2.6.20 failed with a
timeout while trying to write to my SATA hard disk.  After I wait for
a while (during which all I/O to the hard disk blocks), the kernel
message "NCQ disabled due to excessive errors" appears, and the system
seems to work perfectly.

My system is an Athlon64 X2 on an Asus A8N-Premium.  I'm using the
sata_nv driver for the on-board SATA controller.  My only hard disk is
a Samsum HD401LJ (400 GB).

The kernel is build statically, and the only module is nvidia.ko.  If
someone believes it may make a difference, I can try the kernel
without the proprietary module.

Please see the kernel config and dmesg attached to this email.

I don't know the libata subsystem well, but I suspect my hard drive
has to be added to the NCQ blacklist.

Max

View attachment "config-2.6.21-rc3-git9-woodpecker" of type "text/plain" (42080 bytes)

View attachment "woodpecker.dmesg" of type "text/plain" (30933 bytes)