ERROR: Open frontend0 failed (Solved)

[talion]

Hello guys,

I did make tents of clean and proper installation but couldnt get this card working. When i do lsdvb i am getting this error;

TBS PCIE (544:6178 6905:1) on PCI Domain:0 Bus:0 Device:0 Function:0
DEVICE:0 ADAPTER:0 ERROR: Open frontend0 failed

sudo ls -l /dev/dvb/adapter0
total 0
crw-rw---- 1 root video 212, 0 Mar 18 01:45 demux0
crw-rw---- 1 root video 212, 1 Mar 18 01:45 dvr0
crw-rw---- 1 root video 212, 3 Mar 18 01:45 frontend0
crw-rw---- 1 root video 212, 2 Mar 18 01:45 net0


[ 9.396471] TBS PCIE Detected TBS6905 Board Rev 1
[ 9.399613] DVB: registering new adapter (TBS PCIE DVB Adapter)
[ 9.566904] TurboSight TBS 6908/5/3 Frontend Attaching...
[ 10.574261] DVB: registering adapter 0 frontend 0 (TurboSight TBS 6905 DVBS/S2 frontend)...
[ 10.574386] DVB: registering new adapter (TBS PCIE DVB Adapter)
[ 10.574778] TurboSight TBS 6908/5/3 Frontend Attaching...
[ 10.577413] DVB: registering adapter 1 frontend 0 (TurboSight TBS 6905 DVBS/S2 frontend)...
[ 10.577522] DVB: registering new adapter (TBS PCIE DVB Adapter)
[ 10.736014] TurboSight TBS 6908/5/3 Frontend Attaching...
[ 11.718433] DVB: registering adapter 2 frontend 0 (TurboSight TBS 6905 DVBS/S2 frontend)...
[ 11.718581] DVB: registering new adapter (TBS PCIE DVB Adapter)
[ 11.719033] TurboSight TBS 6908/5/3 Frontend Attaching...
[ 11.722919] TurboSight TBS6905/8 MAC Addresses: 00:22:ab:90:ab:88 - 00:22:ab:90:ab:8b
[ 11.722925] DVB: registering adapter 3 frontend 0 (TurboSight TBS 6905 DVBS/S2 frontend)...

[ 9.213583] dvb_core: module verification failed: signature and/or required key missing - tainting kernel
[ 9.566504] tbs6908fe: module license 'TurboSight Proprietary: http://www.tbsdtv.com' taints kernel.
[ 9.566509] Disabling lock debugging due to kernel taint

Module Size Used by
tbsfe 16384 4
tbs6908fe 28672 4
tbs_pcie_dvb 36864 1
dvb_core 106496 1 tbs_pcie_dvb


PS: Used this guides closed source section;
https://www.linuxtv.org/wiki/index.php/ ... stallation


Anyone help me please?

Thanks!

-Talion

[crazycat]

maybe some process already use dvb adapter and lsdvb fail open frontend ?
try dvb utils from my repos - dvbls, scan-s2

[talion]

Thank you Crazycat, as you said we noticed it has used by a process which has been installed by the old administrator of server.

Regards,

Talion

[clang]

sorry to warm up this topic, but i got the same error and i think i did another mistake.
I only get positive feedback fron lsdvb if i am logged in as root. as admin i get the mentioned above error.
looks for me like a permission error.

[stilmant]

I only get positive feedback fron lsdvb if i am logged in as root. as admin i get the mentioned above error.
looks for me like a permission error.

Not sure of your environment but see the group of the /dev device like
crw-rw---- 1 root video 212, 0 Mar 18 01:45 demux

it is 'video' here, so your user needs to belong to that group.

Regards,

[clang]

Actually it is the following permission on /dev/dvb

drwxr-xr-x. 6 root root 120 Jul 7 12:57 dvb

Yesterday all was well until I did a reboot.. and now for any user is says "Open frontend0 failed". I will try to stop any process (like tvheadend) and cheack again..