From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Lord Date: Wed, 21 Apr 2010 19:24:12 +0000 Subject: Re: System hangs when using USB 3.0 HD with on Ubuntu Message-Id: <4BCF50DC.20205@pobox.com> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Alan Stern Cc: Jonas Schwertfeger , Sarah Sharp , Dinh.Nguyen-KZfg59tc24xl57MIdRCFDg@public.gmane.org, Sergei Shtylyov , James Bottomley , Kay Sievers , David Zeuthen , linux-hotplug-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, USB Storage List , Matthew Dharm , linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Lennart Poettering , Douglas Gilbert On 21/04/10 03:07 PM, Alan Stern wrote: > On Wed, 21 Apr 2010, Jonas Schwertfeger wrote: > >> On 04/21/2010 08:17 PM, Mark Lord wrote: >> >> > Let's try again. Does the attached copy of hdparm work for everybody >> > now? It uses ATA_16 by default, for everything. >> >> No, it doesn't: >> >> /dev/sdb: >> outgoing cdb: 85 08 2e 00 00 00 01 00 00 00 00 00 00 40 ec 00 >> data: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > That line is supposed to be the data returned by the drive? It sure > doesn't look right. > > Jonas, can you run the same test, but this time with the drive attached > to your EHCI controller, and get a usbmon log? .. Yeah, I am also curious about that, how it works (or not) when connected via a USB2 cable instead of USB3. Thanks -- Mark Lord Real-Time Remedies Inc. mlord@pobox.com