Just checked and this is exactly the same behavior of the XO-1.<div><br></div><div>Best regards<br><br><div class="gmail_quote">On Sun, Apr 25, 2010 at 9:52 AM, Tiago Marques <span dir="ltr"><<a href="mailto:tiagomnm@gmail.com">tiagomnm@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">It's an Iomega 160GB, which has a seagate drive inside, not sure which one.<div><br></div><div><a href="http://www.iomega.com/about/prreleases/2008/041708_media_xporter.html" target="_blank">http://www.iomega.com/about/prreleases/2008/041708_media_xporter.html</a></div>
<div><br></div><div>As I said in the previous e-mail, the drive works fine, it just doesn't do so when I have other devices plugged, which I understand may be normal given the total power I am pulling of the XO 1.5. I just wanted to know if you were are of that(and that SD cards take a toll on that power), because it could be some kind of design flaw that wasn't detected. If it is a known "problem", then it's all good :)</div>
<div><br></div><div>Best regards,</div><div>Tiago</div><div><div></div><div class="h5"><div><br><div class="gmail_quote">On Sat, Apr 24, 2010 at 11:19 PM, Paul Fox <span dir="ltr"><<a href="mailto:pgf@laptop.org" target="_blank">pgf@laptop.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>tiago wrote:<br>
> I forgot to mention that's not my case since even if I plug the two USB ends<br>
> it still can't power up.<br>
<br>
</div>on either XO model the extra cables won't make a difference -- all the<br>
power (1A available total) is available to any port. does your drive<br>
work on an XO-1? do you have power consumption specs for your drive?<br>
<font color="#888888"><br>
paul<br>
</font><div><div></div><div><br>
><br>
> Best regards,<br>
> Tiago<br>
><br>
> On Sat, Apr 24, 2010 at 7:42 PM, Sameer Verma <<a href="mailto:sverma@sfsu.edu" target="_blank">sverma@sfsu.edu</a>> wrote:<br>
><br>
> > On Sat, Apr 24, 2010 at 4:55 PM, Tiago Marques <<a href="mailto:tiagomnm@gmail.com" target="_blank">tiagomnm@gmail.com</a>> wrote:<br>
> > > Hi all,<br>
> > > I've ran into something on the 1.5 B2 I have here, which I'm in doubt if<br>
> > may<br>
> > > or may not be relevant for OLPC's hardware people(it seems not), so I'm<br>
> > > reporting it anyway.<br>
> > > All three USB ports can deliver enough power to an USB 2.5" HDD, no<br>
> > problem.<br>
> > > They cannot in the following conditions:<br>
> > > - An extra SD card is plugged in<br>
> > > - Another USB device is plugged in one port, even one of lower power<br>
> > like a<br>
> > > flash drive. (sometimes it only takes one, sometimes it takes two, SD<br>
> > card<br>
> > > power also seems to be an issue)<br>
> > > When I try to plug in the 2.5" HDD, it doesn't have enough power to<br>
> > spindle<br>
> > > at enough speed and sits there trying to start itself.<br>
> > > When plugging in an USB device or SD card after the 2.5" HDD is already<br>
> > > working, it suffers a loss of power and enters the restarting state. This<br>
> > is<br>
> > > true if the SD card is plugged in instead(with another USB device<br>
> > present),<br>
> > > which suggests me that the power is shared.<br>
> > > No other plugged devices seem to be rendered temporarily unaccessible due<br>
> > to<br>
> > > the power failure on the high power device.<br>
> > > Best regards,<br>
> > > Tiago<br>
> > > _______________________________________________<br>
> > > Devel mailing list<br>
> > > <a href="mailto:Devel@lists.laptop.org" target="_blank">Devel@lists.laptop.org</a><br>
> > > <a href="http://lists.laptop.org/listinfo/devel" target="_blank">http://lists.laptop.org/listinfo/devel</a><br>
> > ><br>
> ><br>
> > I see a similar issue with a Lacie drive on my Dell desktop. This<br>
> > drive actually comes with a cable that has two USB cables to draw<br>
> > power from two ports. With two ports, the platter spins without any<br>
> > problem. With one port, the disk clicks on the Dell.<br>
> ><br>
> > On a XO-1 G1G1, XO-1.5 B2 and XO-1.5 C2 I am able to power the same<br>
> > drive via one port only both with a SD card and without a SD card. The<br>
> > issue may very well be the USB drive power draw. I am using a LACIE<br>
> > Design by FA Porsche <a href="http://bit.ly/9HD5uI" target="_blank">http://bit.ly/9HD5uI</a><br>
> ><br>
> > This will be important for XS-on-XO scenarios, where we would<br>
> > piggyback the /library partition onto an external drive.<br>
> ><br>
> > cheers,<br>
> > Sameer<br>
> ><br>
> > --<br>
> > Dr. Sameer Verma, Ph.D.<br>
> > Associate Professor, Information Systems<br>
> > Director, Campus Business Solutions<br>
> > San Francisco State University<br>
> > <a href="http://verma.sfsu.edu/" target="_blank">http://verma.sfsu.edu/</a><br>
> > <a href="http://cbs.sfsu.edu/" target="_blank">http://cbs.sfsu.edu/</a><br>
> > <a href="http://is.sfsu.edu/" target="_blank">http://is.sfsu.edu/</a><br>
> ><br>
</div></div><div> > part 2 text/plain 129<br>
> _______________________________________________<br>
</div><div> > Devel mailing list<br>
> <a href="mailto:Devel@lists.laptop.org" target="_blank">Devel@lists.laptop.org</a><br>
> <a href="http://lists.laptop.org/listinfo/devel" target="_blank">http://lists.laptop.org/listinfo/devel</a><br>
<br>
</div><div><div></div><div>=---------------------<br>
paul fox, <a href="mailto:pgf@laptop.org" target="_blank">pgf@laptop.org</a><br>
</div></div></blockquote></div><br></div>
</div></div></blockquote></div><br></div>