# UHD Driver Not Working **URL:** \ **Category:** GNU Radio\ **Created:** [June 16, 2014, 8:29pm UTC](https://www.ruby-forum.com/t/uhd-driver-not-working/230404 "2014-06-16T20:29:57Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![jason\_sam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7993a0/32.png) [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Post date:** [June 16, 2014, 8:29pm UTC](https://www.ruby-forum.com/t/uhd-driver-not-working/230404/1 "2014-06-16T20:29:57Z")
An attempt to use PyBOMBS to install GNU Radio resulted in no errors. However, the UHD driver must have installed incorrectly, because the source and sink blocks are not working. Is there any way to fix this problem? -Carl ---
**Author:** ![carolcp](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/839c29/32.png) [@carolcp](https://www.ruby-forum.com/u/carolcp)\ **Post date:** [June 17, 2014, 9:06am UTC](https://www.ruby-forum.com/t/uhd-driver-not-working/230404/2 "2014-06-17T09:06:03Z")
On Tue, Jun 17, 2014 at 2:25 AM, Carl C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > An attempt to use PyBOMBS to install GNU Radio resulted in no errors. > However, the UHD driver must have installed incorrectly, because the source > and sink blocks are not working. Is there any way to fix this problem? > > -Carl I guess you are not installing on Ubuntu Linux. I experienced the same problem [1] when using PyBOMBS to install gnuradio on Debian Wheezy. Nevertheless the link below may worth referred. In short, you may try these in sequence: a). Run “./pybombs env” and then “source ../target/setup\_env.sh” b). Search for “uhd\_usrp\_source.xml” and make sure that this is in your GRC path c). Manually remove all ghost version of uhd and reinstall it using pybombs. 1. [http://gnuradio.4.n7.nabble.com/PyBOMBS-installed-gnuradio-uhd-usrp-sink-not-found-td48388.html](http://gnuradio.4.n7.nabble.com/PyBOMBS-installed-gnuradio-uhd-usrp-sink-not-found-td48388.html) ---
**Author:** ![carolcp](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/839c29/32.png) [@carolcp](https://www.ruby-forum.com/u/carolcp)\ **Post date:** [June 17, 2014, 6:06pm UTC](https://www.ruby-forum.com/t/uhd-driver-not-working/230404/3 "2014-06-17T18:06:11Z")
On Tue, Jun 17, 2014 at 11:41 AM, fnguyen [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > I’m not really sure what’s up, but I’ve set up the environments and > verified the paths. Anyone else have any ideas? > > Any advice is much appreciated. > > Thanks, > Francis yum install gnuradio I believe they are keeping GNU Radio up to date pretty well on Fedora these days. Tom ---
**Author:** ![carolcp](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/839c29/32.png) [@carolcp](https://www.ruby-forum.com/u/carolcp)\ **Post date:** [June 17, 2014, 5:43pm UTC](https://www.ruby-forum.com/t/uhd-driver-not-working/230404/4 "2014-06-17T17:43:01Z")
Hey Carl, I’m having the same issue on my Fedora boxes. I have two Fedora 20 boxes. On the first one I removed everything related to UHD and GNU Radio and then ran pybombs as uhd first and then GNU Radio. That worked fine for that box so maybe give that a try; however, I replicated the same steps on my 2nd Fedora box, but it’s still missing the UHD components(source and sink blocks in GRC and unable to do uhd\_find\_devices, etc.). On occasion when I remove everything and reinstall uhd and Gnuradio, it’ll have the uhd drivers, but not GRC and its related components. I’m not really sure what’s up, but I’ve set up the environments and verified the paths. Anyone else have any ideas? Any advice is much appreciated. Thanks, Francis