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Date: Fri, 5 Jun 2009 16:02:43 +0200 From: Grozdan <neutrino8@...il.com> To: Alan Cox <alan@...rguk.ukuu.org.uk> Cc: hancockrwd@...il.com, linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org Subject: Re: Kernel 2.6.30rc7 limits IDE to UDMA33 2009/6/5 Alan Cox <alan@...rguk.ukuu.org.uk>: >> older kernels have no problems setting the correct UDMA while 2.6.30 >> does have problems. Something must have definitely changed in this >> latest kernel. I'll go dig in my BIOS to see if I may need to >> change/force something. > > Unless you can actually work through the various kernels and release > candidates to find the one it changes its basically impossible to tell > what has occurred or why. > Well, I looked around in the BIOS and there isn't anything I can do to force a specific UDMA - it only offers disable and auto detect. Upgrading the BIOS firware won't do a thing since I'm already running the latest version of it. The BIOS correctly reports that my first disk is using Transfer Mode 6 and my second one Transfer Mode 5. I've also noticed that some Ubuntu users have the same problem on kernel 2.6.27 (which works for me) https://bugs.launchpad.net/ubuntu/+source/linux/+bug/285595 So if this can't be fixed in the kernel itself, I may need to resort to kernel params if I experience the problem again in the future. I may give all rc's of 2.6.30 a try and see which one introduces it... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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