Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

While diagnosing a problem with lirc I tried to list the USB devices on my system by running lsusb and it simply hang there without displaying anything. I can't even close it with Ctrl+C, I have to close the terminal I launch it from.

I guess it means there is something wrong with the USB "system" and that's why my IR receiver doesn't work.

I searched on the web and did not find much about this problem. What should I try to diagnose this?

share|improve this question
Run the command again then open another terminal and run dmesg | tail and post the errors. – wojox May 1 '11 at 17:50
Welcome to Ask Ubuntu! We need more hardware information to help you, can you look at this question and then edit your question adding the information. – Jorge Castro May 1 '11 at 18:13

Imho, first try disconnect all what you can from your usb ports, run lsusb, then connect one device, run it again and so on. Plus, more informations about IR receiver, your HW and used kernel may be helpful

you can see what kernel you are using now by running

uname -rvi
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.