Error -- intel_do_flush_locked with V3.6.1git on Ubuntu 12.04

GNU Radio
1

Hello list readers,

i tried to install on fresh LinuxMInt13 (a version of Ubuntu 12.04) to
compile and install with the build_gnuradio-script the new 3.6.1git
version out of the git archives. (not josh)

it seems to me a good idea to add the prereqs liborc-0.4-dev.

This works really fine. Every thing seems to be ok, simple examples did
work (i.e. tone generator)

But examples with FunCube Dongle or RTL-DVB-TStick showed a “hard” error
which closes the the actual running grc-program at start up time…

Example: fcd_nbfm_rx.grc gives
Using Volk machine: sse2_32_orc

gr_fir_fff: using SSE
intel_do_flush_locked failed: Invalid argument

Done

I had another installation based on SUSE 11.4 (self compiled packet)
which works fine with FCD and RTL.

As I did not find any solution for this reported error, I like to ask
the “knowledge base” list readers :wink:

Does anybody now of similar errors
is it a new problem?
Is there any advice to solve the error
Does anybody know of a workaround for gnuradio since this error is
reported with different other applications and system software.

Your tips are very welcome

Thanks in advance

M. Hartje

Prof. Dr.-Ing. Michael H.
Labor Hochspannungstechnik / Labor elektrische Messtechnik
Neustadtswall 30; D-28199 Bremen
Tel +49 421 5905-3444 FAX +49 421 5905-3476

2

On Tue, Jun 5, 2012 at 4:39 PM, Michael H.
[email protected] wrote:

Hello list readers,

i tried to install on fresh LinuxMInt13 (a version of Ubuntu 12.04) to
compile and install with the build_gnuradio-script the new 3.6.1git
version out of the git archives. (not josh)

it seems to me a good idea to add the prereqs liborc-0.4-dev.

That wouldn’t work with e.g. Ubuntu 11.04 because it has only orc
0.4.11 and both UHD and GNU Radio requires a version strictly greater
than 0.4.11

This works really fine. Every thing seems to be ok, simple examples did
work (i.e. tone generator)

But examples with FunCube Dongle or RTL-DVB-TStick showed a “hard” error
which closes the the actual running grc-program at start up time…

Example: fcd_nbfm_rx.grc gives
Using Volk machine: sse2_32_orc

gr_fir_fff: using SSE
intel_do_flush_locked failed: Invalid argument

I haven’t seen this error but I can assure you that the Funcube Dongle
source will not work on systems with libusb-1.0.9. I will submit a
patch for that soon - until then stick to the RTL device.

Alex

3

intel_do_flush_locked failed: Invalid argument

This is a problem with Intel graphics drivers.

Switching to a software graphics stack ( Mesa ) worked for me.