From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1PlMza-0003Ib-OB for garchives@archives.gentoo.org; Fri, 04 Feb 2011 14:50:34 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id D9C85E0812; Fri, 4 Feb 2011 14:48:56 +0000 (UTC) Received: from mta-1.ms.rz.rwth-aachen.de (mta-1.ms.rz.RWTH-Aachen.DE [134.130.7.72]) by pigeon.gentoo.org (Postfix) with ESMTP id 9AF6CE0812 for ; Fri, 4 Feb 2011 14:48:56 +0000 (UTC) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-version: 1.0 Content-disposition: inline Content-type: text/plain; charset=ISO-8859-1 Received: from ironport-out-1.rz.rwth-aachen.de ([134.130.5.40]) by mta-1.ms.rz.RWTH-Aachen.de (Sun Java(tm) System Messaging Server 6.3-7.04 (built Sep 26 2008)) with ESMTP id <0LG3004J0L5JEWL0@mta-1.ms.rz.RWTH-Aachen.de> for gentoo-user@lists.gentoo.org; Fri, 04 Feb 2011 15:48:55 +0100 (CET) X-IronPort-AV: E=Sophos;i="4.60,426,1291590000"; d="scan'208";a="92274236" Received: from relay-2.ms.rz.rwth-aachen.de (HELO relay.rwth-aachen.de) ([134.130.7.75]) by ironport-in-1.rz.rwth-aachen.de with ESMTP; Fri, 04 Feb 2011 15:48:56 +0100 Received: from numa-i.igpm.rwth-aachen.de (numa-i.igpm.RWTH-Aachen.DE [134.130.161.252]) by relay.rwth-aachen.de (8.14.4+Sun/8.13.8/1) with ESMTP id p14Emtbe003579 for ; Fri, 04 Feb 2011 15:48:55 +0100 (CET) Received: from numa-i (localhost [127.0.0.1]) by numa-i.igpm.rwth-aachen.de (Postfix) with ESMTP id 48C149DD for ; Fri, 04 Feb 2011 15:48:50 +0100 (CET) Date: Fri, 04 Feb 2011 15:48:50 +0100 From: Helmut Jarausch Subject: Re: [gentoo-user] USB stick recognition problem To: gentoo-user@lists.gentoo.org In-reply-to: X-Mailer: Balsa 2.4.9 Message-id: <1296830930.11645.0@numa-i> Content-transfer-encoding: quoted-printable X-Archives-Salt: X-Archives-Hash: f4267ed4feec19d54abb3fc9820fdddb On 02/02/2011 04:48:40 PM, Paul Hartman wrote: > On Mon, Jan 31, 2011 at 3:43 AM, Helmut Jarausch > wrote: > > Hi, > > > > since a few weeks I have a strange effect with my USB stick. > > > > According to fdisk there is one partition on it > > /dev/sde1 =A0 =A0 =A0 =A0 =A0 =A0 =A038 =A0 =A0 7839719 =A0 =A0 3919841= =A0 =A0b =A0W95 FAT32 > > > > which I haven't changed for a long time. > > > > Whenever I insert this stick, the kernel log shows > > /dev/sde =A0but not /dev/sde1 =A0(and there is no file /dev/sde1) > > > > After Invoking fdisk /dev/sde with a simple 'p' command but nothing > > else, this device shows up. > > > > Has anybody an idea what's going on here? >=20 > I have a USB SD-card reader which cannot read the partition table=20 > when > first inserted into the PC. But, if I issue "hdparm -z /dev/sdg" then > the kernel re-reads the partition table and everything works fine > after that. You can try it, maybe it'll work for you, too. Thanks Paul and all other who tried to help. Sorry for my late reply, I have been too busy. My situation seems special. - the card reader is 2 years old (builtin) - the stick is about 1 year old 2 of my 3 USB stick work just fine up to kernel 2.6.36-? the stick in question has worked definitely. Probably since kernel 2.6.37 this one shows the mentioned problems. Paul's advice above works just fine! So, I think it's a timing problem as Paul has suggested in a later=20 mail. Where can I set the delay_use option of usb-storage to a higher=20 value? Many thanks again, Helmut. =