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TBS6285 Mythbuntu DVB-T tuning fail

TBS6285 Mythbuntu DVB-T tuning fail

Postby tcinnes » Tue Feb 03, 2015 4:17 pm

I had the TBS6285 working perfectly for over a year on MYTHBUNTU 12 ... but recently upgraded to MYTHBUNTU 14 and now cannot get the card to work - here are some symptoms:

Have installed driver in with following output

root@mythtv2:~/tbs/scan-s2# dmesg | grep frontend
[ 15.422765] DVB: registering adapter 0 frontend 0 (TurboSight TBS 62x1 DVBC frontend)...
[ 15.614729] DVB: registering adapter 1 frontend 0 (TurboSight TBS 62x1 DVBC frontend)...
[ 15.806637] DVB: registering adapter 2 frontend 0 (TurboSight TBS 62x1 DVBC frontend)...
[ 15.994597] DVB: registering adapter 3 frontend 0 (TurboSight TBS 62x1 DVBC frontend)...


I when trying to tune to Australian DVB-T in MythTV I get "error parsing parameters"

so I resorted to using 'scan' and 'channels.conf' but I still get errors as follows:

root@mythtv2:~/tbs/scan-s2# scan /usr/share/dvb/dvb-t/au-Canberra-Black-Mt > ~/.tzap/channels.conf
scanning /usr/share/dvb/dvb-t/au-Canberra-Black-Mt
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
initial transponder 205500000 1 3 9 3 1 1 0
initial transponder 226500000 1 3 9 3 1 1 0
initial transponder 219500000 1 3 9 3 1 1 0
initial transponder 177500000 1 3 9 3 1 1 0
initial transponder 543500000 1 2 9 3 1 2 0
>>> tune to: 205500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE
__tune_to_transponder:1910: ERROR: Setting frontend parameters failed: 22 Invalid argument
>>> tune to: 205500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE
__tune_to_transponder:1910: ERROR: Setting frontend parameters failed: 22 Invalid argument
>>> tune to: 226500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE
__tune_to_transponder:1910: ERROR: Setting frontend parameters failed: 22 Invalid argument
>>> tune to: 226500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE
__tune_to_transponder:1910: ERROR: Setting frontend parameters failed: 22 Invalid argument
>>> tune to: 219500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE
__tune_to_transponder:1910: ERROR: Setting frontend parameters failed: 22 Invalid argument
>>> tune to: 219500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE
__tune_to_transponder:1910: ERROR: Setting frontend parameters failed: 22 Invalid argument
>>> tune to: 177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE
__tune_to_transponder:1910: ERROR: Setting frontend parameters failed: 22 Invalid argument
>>> tune to: 177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE
__tune_to_transponder:1910: ERROR: Setting frontend parameters failed: 22 Invalid argument
>>> tune to: 543500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_2_3:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE
__tune_to_transponder:1910: ERROR: Setting frontend parameters failed: 22 Invalid argument
>>> tune to: 543500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_2_3:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE
__tune_to_transponder:1910: ERROR: Setting frontend parameters failed: 22 Invalid argument
ERROR: initial tuning failed
dumping lists (0 services)
Done.



I suspect it is driver related ... is there a DVB-T driver for TBS6285?

any clues???
tcinnes
 
Posts: 1
Joined: Sat Jan 31, 2015 2:08 pm

Re: TBS6285 Mythbuntu DVB-T tuning fail

Postby smile » Sat Feb 28, 2015 11:25 am

Hi tcinnes
you installed the wrong driver.
"root@mythtv2:~/tbs/scan-s2# dmesg | grep frontend
[ 15.422765] DVB: registering adapter 0 frontend 0 (TurboSight TBS 62x1 DVBC frontend)...
[ 15.614729] DVB: registering adapter 1 frontend 0 (TurboSight TBS 62x1 DVBC frontend)...
[ 15.806637] DVB: registering adapter 2 frontend 0 (TurboSight TBS 62x1 DVBC frontend)...
[ 15.994597] DVB: registering adapter 3 frontend 0 (TurboSight TBS 62x1 DVBC frontend)..."
This is DVBC driver ,not DVBT.
please reinstall the driver.fellow the steps :

I.1 extract linux-tbs-drivers.tar.bz2 archive:

# tar xjvf linux-tbs-drivers.tar.bz2

I.2 go to driver package directory:

# cd linux-tbs-drivers

I.3 depending on your kernel version and if the kernel is x86 or
x86_64 (check output of 'uname -a') do:

- for x86 kernel 3.x (x86 32 bit installations of kernel 3.x):

# ./v4l/tbs-x86_r3.sh

- for x86 kernel 2.6.x (x86 32 bit installations of kernel 2.6.x):

# ./v4l/tbs-x86.sh

- for any x86_64 kernel (x86 64 bit installations of Linux):

# ./v4l/tbs-x86_64.sh

I.4 build and install the driver:

# make && make install

I.5 reboot in order to load the newly installed driver:

# shutdown -r now

pls try it again

Thanks
smile
 
Posts: 164
Joined: Sun Oct 09, 2011 9:51 am


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