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ik7ezn@libero.it | 1 May 15:58
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OSS 4.0

Hi All.
Today I have installed Ubuntu 7.04  with kernel 2.6.20.

I have installed the OSS 4.0 (build 1002) last available.
Linrad  working ok but there is a problem. 
Without no input to the Delta44,  to video there is a series of spurious each 3000 Hz (12.000,15.000,18.000 etc.)

These spurious there is not with the Alsa driver or with Windows on the same hardware.

A help?

73  Ermanno / ik7ezn

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ik7ezn@libero.it | 1 May 20:21
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Re: OSS 4.0

Hi Pierre.

Also here, i have not stayed able to setup (U) with 02.29 and OSS 4.0.
Linrad exit with "*** stack smashing detected ***: ./xlinrad terminated".

I have also tried uselessly the oss 4.0 (999).

Ermanno / ik7ezn

> Hi Ermanno,
> 
> Here too, something strange happens with Oss 4.0
> I too have spurs every 1500 hz at the center of the waterfall graph. :-(
> This is with linrad-02.29 and Suse10.0 and Suse10.1
> 
> Are you able to setup your soundcards (Option U) with linrad-02.29 and 
> oss 4.0 ?
> ( Here linrad 02.29 terminates with a segmentation fault )
> 
> If I copy par_userint from linrad-02.28 to linrad-02.29,  linrad-02.29  works 
> but the noise level in the waterfall graph is about 10 db higher than with 
> linrad-02.28
> 
> Pierre/ON5GN
>  
> 
> On Tuesday 01 May 2007 15:58, ik7ezn@... wrote:
> > Hi All.
> > Today I have installed Ubuntu 7.04  with kernel 2.6.20.
> >
(Continue reading)

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Leif Asbrink | 1 May 21:47

Re: OSS 4.0

Hi Ermanno,

> Today I have installed Ubuntu 7.04  with kernel 2.6.20.
> 
> I have installed the OSS 4.0 (build 1002) last available.
> Linrad  working ok but there is a problem. 
> Without no input to the Delta44,  to video there is a 
> series of spurious each 3000 Hz (12.000,15.000,18.000 etc.)
> 
> These spurious there is not with the Alsa driver or with 
> Windows on the same hardware.
?????
I tried Ubuntu 7.04  with kernel 2.6.20 a few days ago, and today
I installed oss from oss-linux-v4.0-1002-i386.tar.bz2 under this
distribution. Everything looks absolutely normal. I only tried 
under X11, but I do not expect svgalib to behave differently.

Have you had a look at "I=Soundcard test mode" ? Presumably
there are pulses with a repetition rate of 3 kHz. Maybe the shape
of these pulses would give a hint.

73

Leif / SM5BSZ

> 
> A help?
> 
> 73  Ermanno / ik7ezn
>
(Continue reading)

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Leif Asbrink | 1 May 21:52

Re: OSS 4.0

Hi Ermanno and Pierre,

> Also here, i have not stayed able to setup (U) with 02.29 and OSS 4.0.
> Linrad exit with "*** stack smashing detected ***: ./xlinrad terminated".
> 
> I have also tried uselessly the oss 4.0 (999).

You did not by any chance forget to run ./configure and make xlinrad
after installing oss?

73

Leif / SM5BSZ

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ik7ezn@libero.it | 2 May 13:00
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Re: OSS 4.0

Hi Leif, Pierre.
I have not resolved yet.  
The problem seems present only with the drivers of the Delta44.  
I have installed same version of OSS and Ubuntu with other 2 cards audio without Delta44 and it works all OK
also the audio setup "U option" with 02.29.  
When you install the envy24 for the Delta44 the spurious ones and the noise they appear it also raises him
without input and not work the setup (U option).  
With the version of Ubuntu 6.06 and 6.10 didn't happen.  
I will continue with the tests  !!!

Ermanno / ik7ezn

---------- Initial Header -----------

From      : "Linrad mailinglist" linrad@...
To          : "Linrad mailinglist" linrad@...
Cc          : 
Date      : Tue, 1 May 2007 21:47:57 +0200
Subject : [linrad] Re: OSS 4.0

> Hi Ermanno,
> 
> > Today I have installed Ubuntu 7.04  with kernel 2.6.20.
> > 
> > I have installed the OSS 4.0 (build 1002) last available.
> > Linrad  working ok but there is a problem. 
> > Without no input to the Delta44,  to video there is a 
> > series of spurious each 3000 Hz (12.000,15.000,18.000 etc.)
> > 
> > These spurious there is not with the Alsa driver or with
(Continue reading)

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Leif Asbrink | 2 May 18:57

Re: OSS 4.0

Hello Ermanno,

> I have not resolved yet.  
> The problem seems present only with the drivers of the Delta44.  
> I have installed same version of OSS and Ubuntu with other 2 
> cards audio without Delta44 and it works all OK also the 
> audio setup "U option" with 02.29. 
> When you install the envy24 for the Delta44 the spurious 
> ones and the noise they appear it also raises him without 
> input and not work the setup (U option).  
> With the version of Ubuntu 6.06 and 6.10 didn't happen.  
> I will continue with the tests  !!!

The tests I made with exactly the same softwares was with a
Delta 44 on a Pentium IV 2.666 GHz. I see no anomalities.

You say the "U option does not work. Please have a look
at soundboard_init.log. This file should give a hint about
where the setup goes wrong.

I do not expect the device to run properly in case the
U option does not run properly. Surely you can edit the 
parameter file manually, but if the U option fails something 
is wrong.

By the way, I have been using OSS 4.0 for quite some time now
under Debian Etch. 

73
(Continue reading)

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Leif Asbrink | 3 May 13:46

Linrad-02.30 replaces 02-29.

Hello All,

Linrad-02.29 is now replaced by 02-30. I made a stupid mistake
(ss[1024] was changed to ss[256] in lsetad.c. I forgot that three
lines of text are stored in ss when the big size was no longer
needed for the SDR_14/IQ setup.

When Linrad-02.29 is run on a computer that have different 
characteristics for RDONLY, RDWR and WRONLY on the same
device number, a segfault will happen if there are more than
85 columns on the screen (more than 764 pixels with the 
smallest font.) This is not common however.

If only two modes are different, and this is quite common
if you have more than one soundcard, the maximum number
of characters allowed will be 128 which means that screens
with up to 1024 pixels are safe.

                        ----  o  ----

The code was pretty old and in Linrad-02.30 this kind of
problem does not exist. Lines are not allowed to become 
more than 80 characters wide regardless of the screen 
size.

If your Linrad-02.29 runs ok there is no need to upgrade.
Changes only affect the setup procedure, "U" in the main
menu.

73
(Continue reading)

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Leif Asbrink | 4 May 23:47

Linrad-02.30 short-lived.

Hi All,

I have received bug reports on Linrad-02.30 that will
make me upload 02-31 (and remove 02-30) pretty soon.

1) Calibration. The zero point of the main spectrum will
grow in proportion to the number of points behind each
pixel. This does not matter at all for the processing, but
it may be inconvenient.

The reason is that I have changed the way the waterfall
is computed when fft2 is not enabled. There is a difference 
only when fft1 is big enough to have more than one bin
behind each pixel on the screen. Old versions use the
average power from all pixels, but 02-29 and onwards use
the strongest bin within each group. This way the sensitivity
of the waterfall is improved by up to 6 dB depending on
averaging.

When I changed the scale factor for the waterfall to no longer
divide by the number of bins that will be summed, I unintendedly
changed the zero point for the main spectrum the same way and
therefore the main spectrum will shift vertically when 
the number of bins behind each pixel is changed.

The correction to this error is trivial and will be done
in 02-31.

2) This is a serious error. In case the parameters for fft1
are selected in a way that causes a long processing time for
(Continue reading)

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ik7ezn@libero.it | 6 May 09:51
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Re: Linrad-02.31

Hi Leif.
The vers. 02-31 has resolved the problem of delay in the keyboard input and also correct level of the
noise-floor in db-bluscale; ok in Win/svga/ X11.
I have found a problem in on-line modify parameters in Win/svga/ X11
During normal operation "A" and after have pressed "X" they could be varied only the parameters of the first
panel. After the 1st enter-key  return directly in normal operation "A".
Thank you for the hard job.

Ermanno / ik7ezn

---------- Initial Header -----------

From      : "Leif Asbrink" leif@...
To          : "ik7ezn@..." ik7ezn@...
Cc          : 
Date      : Sat, 5 May 2007 18:31:57 +0200
Subject : Linrad-02.31

> Hi All,
> 
> Linrad-02.31 is now uploaded.
> 
> The reason why 02-29 and 02-30 behave badly when large
> (and slow) transforms are selected for fft1 or fft2
> (or both) is that the menu thread now has a loop that
> sleeps most of the time, but that occasionally wakes
> up to check that the input is still running.
> This is motivated by the support for SDR-IQ and SDR-14
> that might become disconnected. Rather than just silently
> hang, Linrad will now show a message about the error
(Continue reading)

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ik7ezn@libero.it | 6 May 11:09
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Linrad-02.31 & users_hwaredriver

Hi All.
In linrad 02-31 if use users_hwaredriver and Icom-275 selections need
to correct an error:

Modify the line 601 :

 int serport_baudrate=9600; 

 or insert an new line 626 

 serport_baudrate=9600;

good fun.

Ermanno / ik7ezn

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