Re: [Discuss-gnuradio] USRP1 problem, UHD problem, and one suggestion

[Brett L. Trotter]

On 05/26/2011 09:14 PM, Brett L. Trotter wrote:
> On 05/26/2011 08:06 PM, Nick Foster wrote:
>> On Thu, 2011-05-26 at 19:29 -0500, Brett L. Trotter wrote:
>>> USRP1:
>>> - When we have a very simple flowgraph with a USRP1 sink connected to a
>>> signal source and a USRP1 source connected to a WX scope- trying to shut
>>> down the app using the close box causes the USB on the host system to
>>> freeze up requiring a reboot. Yanking USRP power or ctrl+c'ing avoids
>>> this problem. This problem exists on many flowgraphs, both GRC generated
>>> and not- as far as I know it is limited to flowgraphs with both USRP1
>>> source and sink. This is a serious problem that has hit us on multiple
>>> platforms and machines and causes unnecessary reboots. It is honestly an
>>> unacceptable bug.
>> UHD or gr-usrp? What OS? What version of libusb? Do all USB devices
>> "freeze" or just the USRP? Does power cycling the USRP un-freeze it?
>> This is definitely not something I've seen before.
> gr-usrp
> Ubuntu x86_64 with libusrp /usr/lib/libusb-0.1.so.4.4.4
> RHEL-6 x86-64 with libusrp /usr/lib64/libusb-0.1.so.4.4.4
> I believe I've also seen it on FC14 and RHEL5
>
> USB devices continue to function, but it will not recognize new
> connection events of any device, the USRP will not reinitialize even if
> power cycled and reconnected, even to a different port.
>
Correction- apparently there's libusb1 installed here. Silly me looking
for /usr/lib/libusb-*.

RHEL-6:
libusb1-static-1.0.3-1.el6.x86_64
libusb-devel-0.1.12-23.el6.x86_64
libusb1-1.0.3-1.el6.x86_64
libusb-static-0.1.12-23.el6.x86_64
libusb1-devel-1.0.3-1.el6.x86_64


un  ia32-libusb-0.1-4                           <none>
                   ii  libusb-0.1-4
2:0.1.12-15ubuntu2                         ii  libusb-1.0-0
                   2:1.0.8-2                                  ii
libusb-1.0-0-dev                            2:1.0.8-2
               ii  libusb-dev
2:0.1.12-15ubuntu2                         un  libusb0
                   <none>                                     ii
libusbmuxd1                                 1.0.4-1