From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: PROBLEM: "lost interrupt (Status 0x50)" from DVD drive, long wait on 2.6.31 till 2.6.32rc6 Date: Tue, 01 Dec 2009 15:11:47 +0900 Message-ID: <4B14B3A3.4090103@kernel.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:54940 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751138AbZLAGLb (ORCPT ); Tue, 1 Dec 2009 01:11:31 -0500 In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Erik Postma Cc: Jeff Garzik , linux-ide@vger.kernel.org Hello, On 11/16/2009 12:57 PM, Erik Postma wrote: > 2009/11/15 Erik Postma : >> (...) >> [7.7.] Other information that might be relevant to the problem >> (please look in /proc and include all information that you >> think to be relevant): >> >> Here's dmesg: >> (...) > > Just now I had a boot where it did something different; here's what I > guess is the relevant part of dmesg. This is the same kernel and of > course the same hardware as described in the earlier email. Does the > fact that it's unpredictable mean there's possibly hardware issues? > Still have not seen any sign of trouble on 2.6.30 or earlier. > > [ 6.872066] ata4.00: qc timeout (cmd 0xa0) > [ 6.872123] ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action > 0x6 frozen > [ 6.872183] ata4.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0 > [ 6.872184] cdb 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 > [ 6.872186] res 51/20:03:00:00:00/00:00:00:00:00/a0 Emask > 0x5 (timeout) > [ 6.872337] ata4.00: status: { DRDY ERR } > [ 6.872417] ata4: soft resetting link > [ 7.052604] ata4.00: configured for UDMA/33 > [ 7.053051] ata4: EH complete Timeouts on TURs. These seem pretty common for optical drives for some reason. I can't think of anything which has changed since .30 which could have affected execution of NODATA command. Is the drive useable once those timeouts passed? Does having a media in the drive or not make any difference? Thanks. -- tejun