Ant <
ANT...@zimage.com> wrote:
> I decided to upgrade the old 15" early 2013 MBP's Mac OS X
> v10.10.5/Yosemite to mac OS Sierra/v10.12 since I needed to return it
> soon. Since my new 15" MBP replacement mostly works, I might as well try
> to reproduce it on the working old one. After upgrading and rebooting, I
> logged back into my usual administrator account. I USB connected my
> work's SIMless Samsung Galaxy S6 edge and retried. It worked perfectly!
> I checked mac OS' System Information's USB details and saw it listed:
>
http://i.imgur.com/mmcfkYJ.png
>
> I wonder why the new 15" mid-2015 MBP doesn't connect to it. Here is its
> System Information with the connected, but missing Samsung Galaxy S6
> edge:
http://i.imgur.com/iDRDnIt.png ... :(
>
> It looks like Apple changed its USB setups like removing USB2 in its 15"
> MBP (Retina) between early 2013 and mid-2015 models in terms of USB?
More likely that later system versions simplified the way the USB device
tree is displayed in System Information.
I have multiple saved profiles for my Late 2013 15-inch MacBook Pro that
I made while running OS X 10.9 (Mavericks), OS X 10.10 (Yosemite) and OS
X 10.11 (El Capitan). The same computer shows multiple USB 3.0 Hi-speed
and Superspeed buses in the Mavericks and Yosemite profiles, but only a
single USB 3.0 bus in the El Capitan profile.
Another point is that the Mid 2012 and Early 2013 MacBook Pro models had
USB 3.0 ports plus a separate internal-only USB 2.0 bus for some
peripherals (e.g. the FaceTime camera), which showed up as a separate
bus in System Information (at least, in Yosemite or earlier).
The USB 3.0 ports in 2012 and later models are compatible with USB 2.0
and USB 1.1 peripherals.
> I wonder if the new MBP's USB hardware is defected or something.
If other external USB 2.0 peripherals (or USB 3.0 peripherals reporting
a maximum speed of 480 Mb/s) are working, I'd suspect driver
compatibility issues specific to the OS version and/or Samsung.
> Are there software USB testers?
Apple had a developer tool called USB Prober but the last version I
spotted dates back to 2012 and Xcode 4.3, so it may be unreliable in
recent OS X versions.
--
David Empson
dem...@actrix.gen.nz