Good signal but cannot obtain lock

[ister]

Hello,
I understand I should get status "LF" and indication "FE_HAS_LOCK" for singal 74% (like in similar topic) and I get:

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root@srv1:~/tbs-110818/szap-s2# ./szap-s2 -a 1 -H -C 34 -c ../hotbird_szap-s2.conf "RAI2"
reading channels from file '../hotbird_szap-s2.conf'
zapping to 2 'RAI2':
delivery DVB-S, modulation QPSK
sat 0, frequency 10992 MHz V, symbolrate 27500000, coderate 3/4, rolloff 0.35
vpid 0x0201, apid 0x028b, sid 0x2140
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |

and

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root@srv1:~/tbs-110818/szap-s2# ./szap-s2 -a 1 -H -c ../hotbird_szap-s2.conf "RTR"
reading channels from file '../hotbird_szap-s2.conf'
zapping to 3 'RTR':
delivery DVB-S, modulation QPSK
sat 0, frequency 11034 MHz V, symbolrate 27500000, coderate auto, rolloff 0.35
vpid 0x0334, apid 0x033e, sid 0x06ac
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |

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root@srv1:~/tbs-110818/szap-s2# cat ../hotbird_szap-s2.conf
RAI1:10992:v:0:27500:512:60:8511
RAI2:10992:v:0:27500:513:651:8512
RTR:11034:v:0:27500:820:830:1708
NI:10930:h:0:27500:512:650:7501
RIK:12111:v:0:27500:782:331:782

My current configuration is:

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root@srv1:~/tbs-110818/szap-s2# uname -a
Linux srv1 2.6.38-11-server #50-Ubuntu SMP Mon Sep 12 21:34:27 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

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root@srv1:~/tbs-110818/szap-s2# dmesg |grep cx23885
[    9.691151] cx23885 driver version 0.0.2 loaded
[    9.691193] cx23885 0000:06:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
[    9.691490] CORE cx23885[0]: subsystem: 6981:8888, board: TurboSight TBS 6981 [card=30,autodetected]
[    9.951574] Modules linked in: cx23885(+) cx2341x videobuf_dvb dvb_core bttv(+) v4l2_common videodev v4l1_compat v4l2_compat_ioctl32 nouveau(+) videobuf_dma_sg videobuf_core ir_common ir_core btcx_risc ttm shpchp tveeprom drm_kms_helper drm i2c_algo_bit video x38_edac asus_atk0110 edac_core lp parport raid10 raid456 async_pq async_xor usbhid(+) xor async_memcpy async_raid6_recov hid pata_marvell floppy skge ahci libahci sky2 raid6_pq async_tx raid1 raid0 multipath linear
[   10.492116] cx25840 2-0044: cx23885 A/V decoder found @ 0x88 (cx23885[0])
[   11.279967] cx25840 2-0044: loaded v4l-cx23885-avcore-01.fw firmware (16382 bytes)
[   11.288817] cx23885_dvb_register() allocating 1 frontend(s)
[   11.289015] cx23885[0]: cx23885 based dvb card
[   12.138683] DVB: registering new adapter (cx23885[0])
[   12.168148] cx23885_dvb_register() allocating 1 frontend(s)
[   12.168320] cx23885[0]: cx23885 based dvb card
[   12.340081] DVB: registering new adapter (cx23885[0])
[   12.369570] cx23885_dev_checkrevision() Hardware revision = 0xa5
[   12.369757] cx23885[0]/0: found at 0000:06:00.0, rev: 4, irq: 19, latency: 0, mmio: 0xfe800000
[   12.370037] cx23885 0000:06:00.0: setting latency timer to 64

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root@srv1:~/tbs-110818/szap-s2# modinfo tbs6981fe
filename:       /lib/modules/2.6.38-11-server/kernel/drivers/media/dvb/frontends/tbs6981fe.ko
license:        TurboSight Proprietary: www.tbsdtv.com
author:         Konstantin Dimitrov <kosio.dimitrov@gmail.com>
description:    TurboSight TBS 6981 Dual DVBS/S2 frontend driver module
depends:
vermagic:       2.6.38-11-server SMP mod_unload modversions

Please provide some advice, I have spent considerable time trying to find out what is wrong.
The adapter is working fine in a different PC with Win7 and connected to Diseqc. For the above tests I disconnected the Diseqc to reduce the elements that may be faulty.
Regards

[SergioDanielG]

sure that fec parameter is correct? For example, in www.satbeams.com the fec parameter for TP 10992 V 27600 es 2/3 and you are using './szap-s2 -a 1 -H -C 34 -c ../hotbird_szap-s2.conf "RAI2"'.
And what about scan this tp: 10992000 V 27500 AUTO AUTO AUTO with scan-s2 ?

Other question... Do you have more than 1 dvb card in your pc? or do you use diseqc switch?

Best regards.

[SergioDanielG]

I'm sorry, 6981 is dual tuner... But your system identify it as two adapters or as two frontends?

You can see that with
# ls -l -R /dev/dvb/


Best regards.

[ister]

Hello SergioDanielG,
Thank you for your feedback. The TBS6981 driver delivers two adapters

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root@srv1:~/tbs-110818# ls -l -R /dev/dvb/
/dev/dvb/:
total 0
drwxr-xr-x 2 root root 120 2011-09-23 22:54 adapter0
drwxr-xr-x 2 root root 120 2011-09-23 22:54 adapter1

/dev/dvb/adapter0:
total 0
crw-rw---- 1 root video 212, 1 2011-09-23 22:54 demux0
crw-rw---- 1 root video 212, 2 2011-09-23 22:54 dvr0
crw-rw---- 1 root video 212, 0 2011-09-23 22:54 frontend0
crw-rw---- 1 root video 212, 3 2011-09-23 22:54 net0

/dev/dvb/adapter1:
total 0
crw-rw---- 1 root video 212, 5 2011-09-23 22:54 demux0
crw-rw---- 1 root video 212, 6 2011-09-23 22:54 dvr0
crw-rw---- 1 root video 212, 4 2011-09-23 22:54 frontend0
crw-rw---- 1 root video 212, 7 2011-09-23 22:54 net0

The TBS6981 adapter port “LNB1” is connected to one LNB pointing to Hotbird 13E0 (no switch is installed). The LNB is dual, the other output is connected to sat box, that can receive RAI1, RAI2 and RTR without a problem.

RAI1, RAI2, RTR are in http://www.lyngsat.com/hb6.html as shown in attached images therefore the following seem correct:
root@srv1:~/tbs-110818/szap-s2# cat ../hotbird_szap-s2.conf
RAI1:10992:v:0:27500:512:650:8511
RAI2:10992:v:0:27500:513:651:8512
RTR:11034:v:0:27500:820:830:1708
(RAI has 2/3 and RTR has 3/4 – I did a mistake in previous post). Also I have cross checked these values with the values shown in sat box.

The output I get is:

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root@srv1:~/tbs-110818/szap-s2# ./szap-s2 -c ../hotbird_szap-s2.conf "RAI1" -S 0 -C 23 -H -a 1
reading channels from file '../hotbird_szap-s2.conf'
zapping to 1 'RAI1':
delivery DVB-S, modulation QPSK
sat 0, frequency 10992 MHz V, symbolrate 27500000, coderate 2/3, rolloff 0.35
vpid 0x0200, apid 0x028a, sid 0x213f
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |

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root@srv1:~/tbs-110818/szap-s2# ./szap-s2 -c ../hotbird_szap-s2.conf "RAI2" -S 0 -C 23 -H -a 1
reading channels from file '../hotbird_szap-s2.conf'
zapping to 2 'RAI2':
delivery DVB-S, modulation QPSK
sat 0, frequency 10992 MHz V, symbolrate 27500000, coderate 2/3, rolloff 0.35
vpid 0x0201, apid 0x028b, sid 0x2140
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |

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root@srv1:~/tbs-110818/szap-s2# ./szap-s2 -c ../hotbird_szap-s2.conf "RTR" -S 0 -C 34 -H -a 1
reading channels from file '../hotbird_szap-s2.conf'
zapping to 3 'RTR':
delivery DVB-S, modulation QPSK
sat 0, frequency 11034 MHz V, symbolrate 27500000, coderate 3/4, rolloff 0.35
vpid 0x0334, apid 0x033e, sid 0x06ac
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |

Also scan-s2 provides me nothing but failures:

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root@srv1:~/tbs-110818/scan-s2# ./scan-s2 -a 1 -q /usr/share/dvb/dvb-s/Hotbird-13.0E
API major 5, minor 1
>>> tune to: 12539:hC34S0:S0.0W:27500:
WARNING: >>> tuning failed!!!
>>> tune to: 12539:hC34S0:S0.0W:27500: (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to: 12539:hC34S1:S0.0W:27500:
WARNING: >>> tuning failed!!!
>>> tune to: 12539:hC34S1:S0.0W:27500: (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to: 10719:vC34S0:S0.0W:27500:
WARNING: >>> tuning failed!!!
>>> tune to: 10719:vC34S0:S0.0W:27500: (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to: 10719:vC34S1:S0.0W:27500:
WARNING: >>> tuning failed!!!
>>> tune to: 10719:vC34S1:S0.0W:27500: (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to: 10723:hC34S0:S0.0W:29900:
WARNING: >>> tuning failed!!!
>>> tune to: 10723:hC34S0:S0.0W:29900: (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to: 10723:hC34S1:S0.0W:29900:
WARNING: >>> tuning failed!!!
>>> tune to: 10723:hC34S1:S0.0W:29900: (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to: 10757:vC34S0:S0.0W:27500:
WARNING: >>> tuning failed!!!
>>> tune to: 10757:vC34S0:S0.0W:27500: (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to: 10757:vC34S1:S0.0W:27500:
WARNING: >>> tuning failed!!!
>>> tune to: 10757:vC34S1:S0.0W:27500: (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to: 10775:hC34S0:S0.0W:28000:
WARNING: >>> tuning failed!!!
>>> tune to: 10775:hC34S0:S0.0W:28000: (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to: 10775:hC34S1:S0.0W:28000:
WARNING: >>> tuning failed!!!
>>> tune to: 10775:hC34S1:S0.0W:28000: (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to: 10795:vC34S0:S0.0W:27500:
WARNING: >>> tuning failed!!!
>>> tune to: 10795:vC34S0:S0.0W:27500: (tuning failed)

Any advice is appreciated
Thank you,

[SergioDanielG]

Try adding lnb and frontend parameters

-l lnb-type (DVB-S Only) (use -l help to print types) or
-l low[,high[,switch]] in Mhz
-f number : use given frontend (default 0)

To be sure as you are using the correc frontend , do a simbolic link.

# ln -s /dev/dvb/adapter1/frontend0 /dev/dvb/adapter1/frontend1

and then
$ ./szap-s2 -c ../hotbird_szap-s2.conf "RAI1" -S 0 -C 23 -H -a 1 -f 1

I remember a similar problem. I have 2 cards but same configuration, 2 adapters. I don't remember how correct it... and I'm not in Hotbird foot print to check it...

Best regards

[ister]

I reconnected cables and rebooted server. Then run the commands you instructed:

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root@srv1:~/tbs-110818/szap-s2# ./szap-s2 -c ../hotbird_szap-s2.conf "RAI1" -S 0 -C 23 -H -a 1 -f 0 -l UNIVERSAL
reading channels from file '../hotbird_szap-s2.conf'
zapping to 1 'RAI1':
delivery DVB-S, modulation QPSK
sat 0, frequency 10992 MHz V, symbolrate 27500000, coderate 2/3, rolloff 0.35
vpid 0x0200, apid 0x028a, sid 0x213f
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |

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root@srv1:~/tbs-110818/szap-s2# ./szap-s2 -c ../hotbird_szap-s2.conf "RAI1" -S 0 -C 23 -H -a 1 -f 0 -l DBS
reading channels from file '../hotbird_szap-s2.conf'
zapping to 1 'RAI1':
delivery DVB-S, modulation QPSK
sat 0, frequency 10992 MHz V, symbolrate 27500000, coderate 2/3, rolloff 0.35
vpid 0x0200, apid 0x028a, sid 0x213f
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
FE_SET_PROPERTY failed: Invalid argument
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |

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root@srv1:~/tbs-110818/szap-s2# ./szap-s2 -c ../hotbird_szap-s2.conf "RAI1" -S 0 -C 23 -H -a 1 -f 0 -l STANDARD
reading channels from file '../hotbird_szap-s2.conf'
zapping to 1 'RAI1':
delivery DVB-S, modulation QPSK
sat 0, frequency 10992 MHz V, symbolrate 27500000, coderate 2/3, rolloff 0.35
vpid 0x0200, apid 0x028a, sid 0x213f
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |

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root@srv1:~/tbs-110818/szap-s2# ./szap-s2 -c ../hotbird_szap-s2.conf "RAI1" -S 0 -C 23 -H -a 1 -f 0 -l ENHANCED
reading channels from file '../hotbird_szap-s2.conf'
zapping to 1 'RAI1':
delivery DVB-S, modulation QPSK
sat 0, frequency 10992 MHz V, symbolrate 27500000, coderate 2/3, rolloff 0.35
vpid 0x0200, apid 0x028a, sid 0x213f
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |

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root@srv1:~/tbs-110818/szap-s2# ./szap-s2 -c ../hotbird_szap-s2.conf "RAI1" -S 0 -C 23 -H -a 1 -f 0 -l C-BAND
reading channels from file '../hotbird_szap-s2.conf'
zapping to 1 'RAI1':
delivery DVB-S, modulation QPSK
sat 0, frequency 10992 MHz V, symbolrate 27500000, coderate 2/3, rolloff 0.35
vpid 0x0200, apid 0x028a, sid 0x213f
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
FE_SET_PROPERTY failed: Invalid argument
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 03 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |

Here I receive error message “FE_SET_PROPERTY failed: Invalid argument“

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root@srv1:~/tbs-110818/szap-s2# ./szap-s2 -c ../hotbird_szap-s2.conf "RAI1" -S 0 -C 23 -H -a 1 -f 0 -l 3700,12700
reading channels from file '../hotbird_szap-s2.conf'
zapping to 1 'RAI1':
delivery DVB-S, modulation QPSK
sat 0, frequency 10992 MHz V, symbolrate 27500000, coderate 2/3, rolloff 0.35
vpid 0x0200, apid 0x028a, sid 0x213f
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
FE_SET_PROPERTY failed: Invalid argument
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |

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root@srv1:~/tbs-110818/szap-s2# ./szap-s2 -c ../hotbird_szap-s2.conf "RAI1" -S 0 -C 23 -H -a 1 -f 0 -l 10700,12700
reading channels from file '../hotbird_szap-s2.conf'
zapping to 1 'RAI1':
delivery DVB-S, modulation QPSK
sat 0, frequency 10992 MHz V, symbolrate 27500000, coderate 2/3, rolloff 0.35
vpid 0x0200, apid 0x028a, sid 0x213f
using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0'
FE_SET_PROPERTY failed: Invalid argument
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |
status 01 | signal  74% | snr   0% | ber 0 | unc 0 |

I have also bttv devices (without a tunner) in the same server, could this be a reason for any conflict? The options I set are:

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root@srv1:~/tbs-110818/szap-s2# cat /etc/modprobe.d/bttv.conf
options i2c-algo-bit bit_test=1
options bttv gbuffers=16 card=102,102,102,102,102,102,102,102 radio=0,0,0,0,0,0,0,0 tuner=4,4,4,4,4,4,4,4 chroma_agc=1 combfilter=2 full_luma_range=1 coring=1 autoload=0

Regards

[ister]

I have blacklisted bttv and used default settings for modules i2c-algo-bit and tvaudio. No success.

I have recompiled the latest drivers using make clean, make distclean, make rminstall and then ./v4l/tbs-x86_64.sh, make, make install and reboot. No again success.

I have changed the cable and now it is using a different LNB (different brand/make) and it is pointing to Astra 19E2. No success again.
./szap-s2 -c ../astra_szap-s2.conf -S 0 -a 1 -f 0 -H "BBC" gives me signal 74% and does not lock. The file ../astra_szap-s2.conf is the one included with the drivers.

I do not understand why the signal is again 74%, the new LNB is more in the center of the satellite dish and I am better located in the footprint of Astra 19E2 (Athens, Greece).

My first LNB is "inverto rt" 0.2db.

Any advice is appreciated, I have run out of ideas.

[ister]

All abovementioned builds are using the latest driver (2011/08/18).
I thought of trying the instructions at http://blog.mohammadzadeh.info/index.ph ... e-tbs-6980 for building the module. The build procedure is successful, the module loads but still no lock can be obtained.

The above instructions build the module release on 2010/10/24. Both drivers give me the same software version:

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dmesg | grep tbs6981fe
[   11.112385] tbs6981fe: module license 'TurboSight Proprietary' taints kernel.
[   38.447127] tbs6981fe: software version is 1.95

and

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dmesg | grep cx
[    9.503099] cx23885 driver version 0.0.2 loaded

Is this normal or I am not building/installing something correctly?
Regards,

[ister]

After installing and uninstalling different driver versions and different patches I found on the internet I always had failure. No lock could be achieved.

Then I installed the latest driver again and tried adapter port LNB2 (adapter0). Success.

I do not understand, is my adapter port 1 faulty?

[sami8519]

Did you try these steps( I am not a tbs agent; maybe they have vanished)

1- Using both LNB! and LNB2 at the same time?
2-Using the power cable the comes inside the box?

Hope you solve your problem and if not then return it back to them as the support of tbs products is poor.