From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergey Dolgov Subject: Re: ata_piix, laptop cdrom, ICH7: EH, limiting speed to PIO Date: Tue, 18 Sep 2007 22:05:25 +0400 Message-ID: <20070918180525.GA21130@slk.laptop> References: <6bffcb0e0709120933p6d58127fv3c85076fe41daaca@mail.gmail.com> <20070912200706.GA2620@slk.laptop> <46E849B7.9040402@googlemail.com> <20070912212025.GB2620@slk.laptop> <46E8663E.3080205@googlemail.com> <46ED19F0.8060205@gmail.com> <46EE66EA.3090902@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Alexey Zaytsev Cc: Tejun Heo , Michal Piotrowski , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org List-Id: linux-ide@vger.kernel.org On Mon, Sep 17, 2007 at 09:18:26PM +0400, Alexey Zaytsev wrote: > On 9/17/07, Sergey Dolgov wrote: > > On 9/17/07, Tejun Heo wrote: > > > > [...] > > > >>>> BTW, this only happens when using libata of course. The > > > >>>> old CONFIG_IDE stuff works fine every time. > > > >>> This maybe one of libata weirdness (I really don't get it why some hardware > > > >>> works perfectly fine with an old IDE and don't work well with libata). > > > >> Hmmm... Is MWDMA2 mode used with ide driver too? > > > >> > > > > > > > > What's the best way to tell whether it does or not? (the log says > > > > "selected mode 0x22", see below) > > > > > > Yes, that's MWDMA2. Hmm... We're seeing many cases where MWDMA doesn't > > > work with libata while it works fine with IDE but have no idea what's > > > going on yet. :-( > > > > > > > This may be well a hardware problem. Same laptop (HP nx7300 GB848ES) > works fine with either 2.6.22 and 2.6.23-rc. Maybe actually using the > DVD is required to trigger the problem on the next reboot? No, that is not required. The problem shows up on a fresh start from powered-off state just as well. > Sergey, btw, on this laptop I've observed lockups twice with the -rc5. > After switching to 2.6.22 it was stable for at least one day. Can you > confirm or refute this? I've been using 2.6.23 rcs (rc3, rc6) since August, often for days without rebooting the machine. Haven't seen any lockups (except the ones on a return from suspend-to-RAM, but that's another story). -- Sergey