azap from LinuxTV dvb-apps strange signal behavior with Hauppauge WinTV-HVR 950Q












2















What I want to do



I have a Hauppauge WinTV-HVR 950Q USB-TV-Stick. I want to use this stick to successively tune to and read in a certain live TV stream.



What I do



I trigger a scan and save the scan results in a file. I call it channels.conf, like the v4l documentary proposes.



scan /home/username/Documents/dvb/atsc/us-CA-SF-Bay-Area > /home/username/Documents/dvb/atsc/conf/home_channels.conf


Everything works fine, the scan returns something like this(A correct channel file):



[0003]:503000000:8VSB:49:52:3

[0005]:503000000:8VSB:81:84:5

[0006]:503000000:8VSB:97:100:6

26 San Francisco, CA:551000000:8VSB:49:52:3

26 San Francisco, CA:551000000:8VSB:65:68:4

KTSF-D3:551000000:8VSB:81:84:5

KTSF-D4:551000000:8VSB:97:100:6

KTSF-D5:551000000:8VSB:113:116:7

KTSF-D6:551000000:8VSB:129:132:8

KPIX-DT:563000000:8VSB:49:52:1

KKPX ION:635000000:8VSB:49:52:3

KKPX qubo:635000000:8VSB:65:68:4

IONLife:635000000:8VSB:81:84:5

100:635000000:8VSB:487:488:100

200:635000000:8VSB:417:418:200

201:635000000:8VSB:422:423:201

202:635000000:8VSB:427:428:202

203:635000000:8VSB:432:433:203

204:635000000:8VSB:412:413:204

300:635000000:8VSB:442:443:300

400:635000000:8VSB:457:458:400

KSTS-HD:683000000:8VSB:49:52:3

Telemundo Exitos TV:683000000:8VSB:65:68:4

CNL-SOI:683000000:8VSB:81:84:5

KQEH:689000000:8VSB:49:52:1

KQED:689000000:8VSB:65:68:2

LIFE:689000000:8VSB:81:84:3

KIDS:689000000:8VSB:97:100:4

V-me:689000000:8VSB:113:116:5


Then I tune to a channel from the scan results. KIDS for example:



azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS


What I expect the program to do:



I expect the program to be tuned and to deliver results similar to this:



username@username:~$ azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS

using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'

tuning to 689000000 Hz

video pid 0x0061, audio pid 0x0064



status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 00dc | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

...


What it does:



In 2 out of 5 tries the azap just doesn't work at all. 



username@username:~$ azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS

using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'

tuning to 689000000 Hz

video pid 0x0061, audio pid 0x0064



status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 0000 | snr 00e4 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 0000 | snr 00c2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

...


The rest of the time it generally works initially, then switches the status to 00 and can not be used any more, even if there is incoming signal. 



status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 00d2 | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 00c8 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 00 | signal 00e6 | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK

...


The output even shows that there is high signal to noise ratio, low or rather no block errors or uncorrected errors at all at first, then it
This keeps me wondering since I see no reason for the program to switch. After double checking with a real TV I am very sure that I always have an incoming signal and that there should not be any reasons for a behavior like this.



Question



Can any of you guys see a reason for this behavior, could it be a problem with the Hardware that I'm using or rather a Software issue? Did anybody experience the same issues, how did you fix it? Any help is greatly appreciated!






linux hardware video







share|improve this question
















bumped to the homepage by Community♦ 14 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.






migrated from stackoverflow.com Feb 27 '12 at 19:37


This question came from our site for professional and enthusiast programmers.























    2















    What I want to do



    I have a Hauppauge WinTV-HVR 950Q USB-TV-Stick. I want to use this stick to successively tune to and read in a certain live TV stream.



    What I do



    I trigger a scan and save the scan results in a file. I call it channels.conf, like the v4l documentary proposes.



    scan /home/username/Documents/dvb/atsc/us-CA-SF-Bay-Area > /home/username/Documents/dvb/atsc/conf/home_channels.conf


    Everything works fine, the scan returns something like this(A correct channel file):



    [0003]:503000000:8VSB:49:52:3
    
[0005]:503000000:8VSB:81:84:5
    
[0006]:503000000:8VSB:97:100:6
    
26 San Francisco, CA:551000000:8VSB:49:52:3
    
26 San Francisco, CA:551000000:8VSB:65:68:4
    
KTSF-D3:551000000:8VSB:81:84:5
    
KTSF-D4:551000000:8VSB:97:100:6
    
KTSF-D5:551000000:8VSB:113:116:7
    
KTSF-D6:551000000:8VSB:129:132:8
    
KPIX-DT:563000000:8VSB:49:52:1
    
KKPX ION:635000000:8VSB:49:52:3
    
KKPX qubo:635000000:8VSB:65:68:4
    
IONLife:635000000:8VSB:81:84:5
    
100:635000000:8VSB:487:488:100
    
200:635000000:8VSB:417:418:200
    
201:635000000:8VSB:422:423:201
    
202:635000000:8VSB:427:428:202
    
203:635000000:8VSB:432:433:203
    
204:635000000:8VSB:412:413:204
    
300:635000000:8VSB:442:443:300
    
400:635000000:8VSB:457:458:400
    
KSTS-HD:683000000:8VSB:49:52:3
    
Telemundo Exitos TV:683000000:8VSB:65:68:4
    
CNL-SOI:683000000:8VSB:81:84:5
    
KQEH:689000000:8VSB:49:52:1
    
KQED:689000000:8VSB:65:68:2
    
LIFE:689000000:8VSB:81:84:3
    
KIDS:689000000:8VSB:97:100:4
    
V-me:689000000:8VSB:113:116:5


    Then I tune to a channel from the scan results. KIDS for example:



    azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS


    What I expect the program to do:



    I expect the program to be tuned and to deliver results similar to this:



    username@username:~$ azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS
    
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
    
tuning to 689000000 Hz
    
video pid 0x0061, audio pid 0x0064
    

    
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 1f | signal 00dc | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
...


    What it does:



    In 2 out of 5 tries the azap just doesn't work at all. 



    username@username:~$ azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS
    
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
    
tuning to 689000000 Hz
    
video pid 0x0061, audio pid 0x0064
    

    
status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 0000 | snr 00e4 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 0000 | snr 00c2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
...


    The rest of the time it generally works initially, then switches the status to 00 and can not be used any more, even if there is incoming signal. 



    status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 1f | signal 00d2 | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 1f | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 1f | signal 00c8 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 1f | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
status 00 | signal 00e6 | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
    
...


    The output even shows that there is high signal to noise ratio, low or rather no block errors or uncorrected errors at all at first, then it
    This keeps me wondering since I see no reason for the program to switch. After double checking with a real TV I am very sure that I always have an incoming signal and that there should not be any reasons for a behavior like this.



    Question



    Can any of you guys see a reason for this behavior, could it be a problem with the Hardware that I'm using or rather a Software issue? Did anybody experience the same issues, how did you fix it? Any help is greatly appreciated!






    linux hardware video







    share|improve this question
















    bumped to the homepage by Community♦ 14 mins ago


    This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.






    migrated from stackoverflow.com Feb 27 '12 at 19:37


    This question came from our site for professional and enthusiast programmers.





















      2












      2








      2








      What I want to do



      I have a Hauppauge WinTV-HVR 950Q USB-TV-Stick. I want to use this stick to successively tune to and read in a certain live TV stream.



      What I do



      I trigger a scan and save the scan results in a file. I call it channels.conf, like the v4l documentary proposes.



      scan /home/username/Documents/dvb/atsc/us-CA-SF-Bay-Area > /home/username/Documents/dvb/atsc/conf/home_channels.conf


      Everything works fine, the scan returns something like this(A correct channel file):



      [0003]:503000000:8VSB:49:52:3
      
[0005]:503000000:8VSB:81:84:5
      
[0006]:503000000:8VSB:97:100:6
      
26 San Francisco, CA:551000000:8VSB:49:52:3
      
26 San Francisco, CA:551000000:8VSB:65:68:4
      
KTSF-D3:551000000:8VSB:81:84:5
      
KTSF-D4:551000000:8VSB:97:100:6
      
KTSF-D5:551000000:8VSB:113:116:7
      
KTSF-D6:551000000:8VSB:129:132:8
      
KPIX-DT:563000000:8VSB:49:52:1
      
KKPX ION:635000000:8VSB:49:52:3
      
KKPX qubo:635000000:8VSB:65:68:4
      
IONLife:635000000:8VSB:81:84:5
      
100:635000000:8VSB:487:488:100
      
200:635000000:8VSB:417:418:200
      
201:635000000:8VSB:422:423:201
      
202:635000000:8VSB:427:428:202
      
203:635000000:8VSB:432:433:203
      
204:635000000:8VSB:412:413:204
      
300:635000000:8VSB:442:443:300
      
400:635000000:8VSB:457:458:400
      
KSTS-HD:683000000:8VSB:49:52:3
      
Telemundo Exitos TV:683000000:8VSB:65:68:4
      
CNL-SOI:683000000:8VSB:81:84:5
      
KQEH:689000000:8VSB:49:52:1
      
KQED:689000000:8VSB:65:68:2
      
LIFE:689000000:8VSB:81:84:3
      
KIDS:689000000:8VSB:97:100:4
      
V-me:689000000:8VSB:113:116:5


      Then I tune to a channel from the scan results. KIDS for example:



      azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS


      What I expect the program to do:



      I expect the program to be tuned and to deliver results similar to this:



      username@username:~$ azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS
      
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
      
tuning to 689000000 Hz
      
video pid 0x0061, audio pid 0x0064
      

      
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00dc | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
...


      What it does:



      In 2 out of 5 tries the azap just doesn't work at all. 



      username@username:~$ azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS
      
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
      
tuning to 689000000 Hz
      
video pid 0x0061, audio pid 0x0064
      

      
status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 0000 | snr 00e4 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 0000 | snr 00c2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
...


      The rest of the time it generally works initially, then switches the status to 00 and can not be used any more, even if there is incoming signal. 



      status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00d2 | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00c8 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00e6 | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
...


      The output even shows that there is high signal to noise ratio, low or rather no block errors or uncorrected errors at all at first, then it
      This keeps me wondering since I see no reason for the program to switch. After double checking with a real TV I am very sure that I always have an incoming signal and that there should not be any reasons for a behavior like this.



      Question



      Can any of you guys see a reason for this behavior, could it be a problem with the Hardware that I'm using or rather a Software issue? Did anybody experience the same issues, how did you fix it? Any help is greatly appreciated!






      linux hardware video







      share|improve this question
















      What I want to do



      I have a Hauppauge WinTV-HVR 950Q USB-TV-Stick. I want to use this stick to successively tune to and read in a certain live TV stream.



      What I do



      I trigger a scan and save the scan results in a file. I call it channels.conf, like the v4l documentary proposes.



      scan /home/username/Documents/dvb/atsc/us-CA-SF-Bay-Area > /home/username/Documents/dvb/atsc/conf/home_channels.conf


      Everything works fine, the scan returns something like this(A correct channel file):



      [0003]:503000000:8VSB:49:52:3
      
[0005]:503000000:8VSB:81:84:5
      
[0006]:503000000:8VSB:97:100:6
      
26 San Francisco, CA:551000000:8VSB:49:52:3
      
26 San Francisco, CA:551000000:8VSB:65:68:4
      
KTSF-D3:551000000:8VSB:81:84:5
      
KTSF-D4:551000000:8VSB:97:100:6
      
KTSF-D5:551000000:8VSB:113:116:7
      
KTSF-D6:551000000:8VSB:129:132:8
      
KPIX-DT:563000000:8VSB:49:52:1
      
KKPX ION:635000000:8VSB:49:52:3
      
KKPX qubo:635000000:8VSB:65:68:4
      
IONLife:635000000:8VSB:81:84:5
      
100:635000000:8VSB:487:488:100
      
200:635000000:8VSB:417:418:200
      
201:635000000:8VSB:422:423:201
      
202:635000000:8VSB:427:428:202
      
203:635000000:8VSB:432:433:203
      
204:635000000:8VSB:412:413:204
      
300:635000000:8VSB:442:443:300
      
400:635000000:8VSB:457:458:400
      
KSTS-HD:683000000:8VSB:49:52:3
      
Telemundo Exitos TV:683000000:8VSB:65:68:4
      
CNL-SOI:683000000:8VSB:81:84:5
      
KQEH:689000000:8VSB:49:52:1
      
KQED:689000000:8VSB:65:68:2
      
LIFE:689000000:8VSB:81:84:3
      
KIDS:689000000:8VSB:97:100:4
      
V-me:689000000:8VSB:113:116:5


      Then I tune to a channel from the scan results. KIDS for example:



      azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS


      What I expect the program to do:



      I expect the program to be tuned and to deliver results similar to this:



      username@username:~$ azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS
      
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
      
tuning to 689000000 Hz
      
video pid 0x0061, audio pid 0x0064
      

      
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00dc | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
...


      What it does:



      In 2 out of 5 tries the azap just doesn't work at all. 



      username@username:~$ azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS
      
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
      
tuning to 689000000 Hz
      
video pid 0x0061, audio pid 0x0064
      

      
status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 0000 | snr 00e4 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 0000 | snr 00c2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
...


      The rest of the time it generally works initially, then switches the status to 00 and can not be used any more, even if there is incoming signal. 



      status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00d2 | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00c8 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 1f | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
status 00 | signal 00e6 | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
      
...


      The output even shows that there is high signal to noise ratio, low or rather no block errors or uncorrected errors at all at first, then it
      This keeps me wondering since I see no reason for the program to switch. After double checking with a real TV I am very sure that I always have an incoming signal and that there should not be any reasons for a behavior like this.



      Question



      Can any of you guys see a reason for this behavior, could it be a problem with the Hardware that I'm using or rather a Software issue? Did anybody experience the same issues, how did you fix it? Any help is greatly appreciated!






      linux hardware video




      linux hardware video






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Feb 27 '12 at 23:07









      Gilles

      539k12810891606




      539k12810891606










      asked Feb 27 '12 at 19:32









      mmomentmmoment

      1133




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          1 Answer
          1






          active

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          0














          Did you try using the atsc initial tuning data?



          $ head -n 20 /usr/share/dvb/atsc/us-ATSC-center-frequencies-8VSB
          
# US ATSC center frequencies, use if in doubt
          

          
A  57028615 8VSB
          
A  63028615 8VSB 
          
A  69028615 8VSB
          
A  79028615 8VSB
          
A  85028615 8VSB
          
A 177028615 8VSB
          
A 183028615 8VSB
          
A 189028615 8VSB
          
A 195028615 8VSB
          
A 201028615 8VSB
          
A 207028615 8VSB
          
A 213028615 8VSB
          
A 473028615 8VSB
          
A 479028615 8VSB
          
A 485028615 8VSB
          
A 491028615 8VSB
          
A 497028615 8VSB
          
A 503028615 8VSB


          How does it behave using vlc to tune?



          vlc atsc://frequency=689028615 :dvb-adapter=0





          share|improve this answer

























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            0














            Did you try using the atsc initial tuning data?



            $ head -n 20 /usr/share/dvb/atsc/us-ATSC-center-frequencies-8VSB
            
# US ATSC center frequencies, use if in doubt
            

            
A  57028615 8VSB
            
A  63028615 8VSB 
            
A  69028615 8VSB
            
A  79028615 8VSB
            
A  85028615 8VSB
            
A 177028615 8VSB
            
A 183028615 8VSB
            
A 189028615 8VSB
            
A 195028615 8VSB
            
A 201028615 8VSB
            
A 207028615 8VSB
            
A 213028615 8VSB
            
A 473028615 8VSB
            
A 479028615 8VSB
            
A 485028615 8VSB
            
A 491028615 8VSB
            
A 497028615 8VSB
            
A 503028615 8VSB


            How does it behave using vlc to tune?



            vlc atsc://frequency=689028615 :dvb-adapter=0





            share|improve this answer






























              0














              Did you try using the atsc initial tuning data?



              $ head -n 20 /usr/share/dvb/atsc/us-ATSC-center-frequencies-8VSB
              
# US ATSC center frequencies, use if in doubt
              

              
A  57028615 8VSB
              
A  63028615 8VSB 
              
A  69028615 8VSB
              
A  79028615 8VSB
              
A  85028615 8VSB
              
A 177028615 8VSB
              
A 183028615 8VSB
              
A 189028615 8VSB
              
A 195028615 8VSB
              
A 201028615 8VSB
              
A 207028615 8VSB
              
A 213028615 8VSB
              
A 473028615 8VSB
              
A 479028615 8VSB
              
A 485028615 8VSB
              
A 491028615 8VSB
              
A 497028615 8VSB
              
A 503028615 8VSB


              How does it behave using vlc to tune?



              vlc atsc://frequency=689028615 :dvb-adapter=0





              share|improve this answer




























                0












                0








                0







                Did you try using the atsc initial tuning data?



                $ head -n 20 /usr/share/dvb/atsc/us-ATSC-center-frequencies-8VSB
                
# US ATSC center frequencies, use if in doubt
                

                
A  57028615 8VSB
                
A  63028615 8VSB 
                
A  69028615 8VSB
                
A  79028615 8VSB
                
A  85028615 8VSB
                
A 177028615 8VSB
                
A 183028615 8VSB
                
A 189028615 8VSB
                
A 195028615 8VSB
                
A 201028615 8VSB
                
A 207028615 8VSB
                
A 213028615 8VSB
                
A 473028615 8VSB
                
A 479028615 8VSB
                
A 485028615 8VSB
                
A 491028615 8VSB
                
A 497028615 8VSB
                
A 503028615 8VSB


                How does it behave using vlc to tune?



                vlc atsc://frequency=689028615 :dvb-adapter=0





                share|improve this answer















                Did you try using the atsc initial tuning data?



                $ head -n 20 /usr/share/dvb/atsc/us-ATSC-center-frequencies-8VSB
                
# US ATSC center frequencies, use if in doubt
                

                
A  57028615 8VSB
                
A  63028615 8VSB 
                
A  69028615 8VSB
                
A  79028615 8VSB
                
A  85028615 8VSB
                
A 177028615 8VSB
                
A 183028615 8VSB
                
A 189028615 8VSB
                
A 195028615 8VSB
                
A 201028615 8VSB
                
A 207028615 8VSB
                
A 213028615 8VSB
                
A 473028615 8VSB
                
A 479028615 8VSB
                
A 485028615 8VSB
                
A 491028615 8VSB
                
A 497028615 8VSB
                
A 503028615 8VSB


                How does it behave using vlc to tune?



                vlc atsc://frequency=689028615 :dvb-adapter=0






                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Mar 4 '12 at 7:51









                Mat

                39.5k8121127




                39.5k8121127










                answered Mar 3 '12 at 19:34









                billbill

                1




                1






























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