Re: [Discuss-gnuradio] segfault and gr-fcd

[Volker Schroer]

Hi Alex,
thank you for the quick response.

> Hi Volker,
>
> Although using a slider to tune hardware pll is a bad idea, I don't
> think the crash you see is because of that. It sounds more like an
> issue some people have seen on debian with libusb 1.0.9-pre-something
>
> Which version of libusb do you have? Can you run the included examples
> and qthid without crash?
I'm using libusb-1.0.9_rc3. I get a similar problem using qthid. qthid 
crashes before showing up the gui.
I think, libusb has a problem multiple open and closing the device. So I 
just changed the code of qthid to open the device only at the beginning 
and keep it open. Then qthid works.
> PS: The slider in your example isn't doing much as it has only one step ;-)
I know, but it was the easiest way to show the problem.

Perhaps I should downgrade libusb.

Volker