Hi dCrypt, I'm not a developer at all. I'm not even sure why I read this list, but can you determine if the problem is associated with a particular kernel version? i.e. if it works on x.y.z but fails on x.y.(z+1) you have a starting point. If you use the word "regression" and a kernel version number you might get more attention - but I'm only guessing. Good luck, blind Pete dCrypt wrote: > Hi again, > > I'm sorry if I sound quite rude, but I'm not sure if I am doing it right > or not. I subscribed to this mailing list in order to ask for help, or to > help with a bug that I've found (as instructed in the wiki > http://linuxtv.org/wiki/index.php/Bug_Report), but it seems to me that the > mailing list is filled up with developing messages. I don't want to > participate in the development, I am a developer but I don't have the > skills nor the knowledge. > > If this is not the right place to direct my questions, I would appreciate > some advice. > > Thank you very much, and best regards. > > -----Mensaje original----- > De: linux-media-owner@xxxxxxxxxxxxxxx > [mailto:linux-media-owner@xxxxxxxxxxxxxxx] En nombre de dCrypt > Enviado el: jueves, 01 de enero de 2015 22:04 > Para: linux-media@xxxxxxxxxxxxxxx > Asunto: [BUG] Dual tuner TV card, works using one tuner only, doesn't work > if both tuners are used > > Hi, > > I just subscribed to the mailing list to submit information on the bug > which is driving me crazy since one month ago. > > I have a VDR based PVR at home, installed over an Ubuntu 14.04 LTS. > Everything was working perfectly, until beginning of December. It seems to > me that something changed that broke my PVR pretty bad. > > The problem is the following: tuning (zap) both tuners (it's not needed > that both are tuned simultaneously, only one after the other, in no > particular order) makes the tuners to enter an state where they can't lock > the signal anymore. > > Facts: > > - My TV card is a Cinergy T PCIe Dual from Terratec > (http://www.linuxtv.org/wiki/index.php/TerraTec_Cinergy_T_PCIe_dual). > - The problem arose in the form of "frontend x/0 timed out while tuning to > channel ..." in /var/log/syslog. It happened when both tuners are active, > during EPG scan. The problem does not happen if VDR is run with -D > parameter to limit the number of frontends enabled. Disabling the EPG scan > with both frontends enabled minimizes the problem, but doesn't solve it > because tuning both frontends without any EPG scan makes the error happen > again. - I initially thought about a problem in the DVB-T signal, because > it all started the 1st of December, during the transition to a new set of > frequencies in Spain. > - Everything was working perfectly before the 1st, and the problems > started suddenly. > - I setup testing board for debugging, different board and processor, less > memory, lots of Linux distros tested, Windows tested as well. > - Both tuners works in windows without problems. Confirmed. > - I have completely discarded problems/errors in hardware (because in > Windows I can enable both tuners without problems) and VDR (because I can > reproduce the problems at OS level, without even having VDR installed). > - I have almost narrowed the problem at the cx23885 driver, because when > it happens, I can restart the TV card to working conditions by executing > "rmmod cx23885" and "modprobe cx23885"; however, as with "rmmod" several > dependencies are unloaded as well, I am stuck and I am unable to go on > with debugging to find out where the problem really is. > - Tools used to test and confirm the problem are: VDR, MythTV, TVHeadend, > dvbscan, dvbv5-scan, dvbv5-zap and others > - Linux distros tested: Ubuntu, Fedora, Suse, yaVDR (not sure if the card > worked at all), MythBuntu ("dvb-fe-tool -a 1 -c DVBT" was required to > force DVB-T mode for the second tuner), and probably others > - I have a Sony PlayTV also with dual tuners, which works without any > problem. > http://www.linuxtv.org/wiki/index.php/Sony_PlayTV_dual_tuner_DVB-T > > So, that's why I ask for your help. How can I further debug the problem? > Is there something I can do? > > BR, and happy new year! > > > INFO & TEST: > > --------------------------------------------------------------------> > > pvr@prueba:~$ sudo lspci -vvv -s 03:00.0 03:00.0 Multimedia video > controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder > (rev 04) > Subsystem: TERRATEC Electronic GmbH Cinergy T PCIe Dual > Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- > ParErr- > Stepping- SERR- FastB2B- DisINTx- > Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- > <TAbort- <MAbort- >SERR- <PERR- INTx- > Latency: 0, Cache Line Size: 4 bytes > Interrupt: pin A routed to IRQ 16 > Region 0: Memory at fba00000 (64-bit, non-prefetchable) [size=2M] > Capabilities: [40] Express (v1) Endpoint, MSI 00 > DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s > <64ns, L1 <1us > ExtTag- AttnBtn- AttnInd- PwrInd- RBE- FLReset- > DevCtl: Report errors: Correctable- Non-Fatal- Fatal- > Unsupported- > RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ > MaxPayload 128 bytes, MaxReadReq 512 bytes > DevSta: CorrErr- UncorrErr+ FatalErr- UnsuppReq+ AuxPwr- > TransPend- > LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, > Exit > Latency L0s <2us, L1 <4us > ClockPM- Surprise- LLActRep- BwNot- > LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ > ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- > LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ > DLActive- BWMgmt- ABWMgmt- > Capabilities: [80] Power Management version 2 > Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA > PME(D0+,D1+,D2+,D3hot+,D3cold-) > Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- > Capabilities: [90] Vital Product Data > Product Name: " > End > Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+ > Address: 0000000000000000 Data: 0000 > Capabilities: [100 v1] Advanced Error Reporting > UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- > RxOF- MalfTLP- ECRC- UnsupReq+ ACSViol- > UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- > RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- > UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- > RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol- > CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- > NonFatalErr- > CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- > NonFatalErr- > AERCap: First Error Pointer: 14, GenCap- CGenEn- ChkCap- > ChkEn- > Capabilities: [200 v1] Virtual Channel > Caps: LPEVC=0 RefClk=100ns PATEntryBits=1 > Arb: Fixed+ WRR32+ WRR64+ WRR128- > Ctrl: ArbSelect=WRR64 > Status: InProgress- > Port Arbitration Table [240] <?> > VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans- > Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- > WRR256- > Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=ff > Status: NegoPending- InProgress- > Kernel driver in use: cx23885 > > --------------------------------------------------------------------> > > pvr@prueba:~$ dmesg | grep cx > [ 12.812789] cx23885 driver version 0.0.3 loaded > [ 12.812997] CORE cx23885[0]: subsystem: 153b:117e, board: TerraTec > Cinergy T PCIe Dual [card=34,autodetected] > [ 12.949340] cx25840 11-0044: cx23885 A/V decoder found @ 0x88 > (cx23885[0]) > [ 13.723953] cx25840 11-0044: loaded v4l-cx23885-avcore-01.fw firmware > (16382 bytes) > [ 13.739701] cx23885_dvb_register() allocating 1 frontend(s) > [ 13.739704] cx23885[0]: cx23885 based dvb card > [ 13.852565] DVB: registering new adapter (cx23885[0]) > [ 13.852569] cx23885 0000:03:00.0: DVB: registering adapter 0 frontend 0 > (DRXK DVB-T)... > [ 13.852749] cx23885_dvb_register() allocating 1 frontend(s) > [ 13.852750] cx23885[0]: cx23885 based dvb card > [ 13.958613] DVB: registering new adapter (cx23885[0]) > [ 13.958618] cx23885 0000:03:00.0: DVB: registering adapter 1 frontend 0 > (DRXK DVB-C DVB-T)... > [ 13.958934] cx23885_dev_checkrevision() Hardware revision = 0xa5 > [ 13.958939] cx23885[0]/0: found at 0000:03:00.0, rev: 4, irq: 16, > latency: 0, mmio: 0xfba00000 > > --------------------------------------------------------------------> > > pvr@prueba:~$ sudo dvbv5-zap "La 1 HD." -c channelsv5.conf -a 0 -x using > demux '/dev/dvb/adapter0/demux0' > reading channels from file 'channelsv5.conf' > service has pid type 05: 115 > tuning to 770000000 Hz > (0x00) Quality= Good Signal= 100,00% C/N= 11,30dB UCB= 2 postBER= 0 > preBER= 57,9x10^-6 PER= 48,8x10^-6 > Lock (0x1f) Quality= Good Signal= 100,00% C/N= 11,80dB UCB= 3 postBER= 0 > preBER= 55,1x10^-6 PER= 0 > pvr@prueba:~$ > pvr@prueba:~$ sudo dvbv5-zap "La 1 HD." -c channelsv5.conf -a 0 -x using > demux '/dev/dvb/adapter0/demux0' > reading channels from file 'channelsv5.conf' > service has pid type 05: 115 > tuning to 770000000 Hz > (0x00) Quality= Good Signal= 100,00% C/N= 11,80dB UCB= 3 postBER= 0 > preBER= 63,6x10^-6 PER= 56,3x10^-6 > Lock (0x1f) Quality= Good Signal= 100,00% C/N= 12,20dB UCB= 4 postBER= > 5,39x10^-6 preBER= 0 PER= 0 > pvr@prueba:~$ > pvr@prueba:~$ sudo dvbv5-zap "La 1 HD." -c channelsv5.conf -a 0 -x using > demux '/dev/dvb/adapter0/demux0' > reading channels from file 'channelsv5.conf' > service has pid type 05: 115 > tuning to 770000000 Hz > (0x00) Quality= Good Signal= 100,00% C/N= 12,20dB UCB= 4 postBER= > 1,01x10^-6 preBER= 58,6x10^-6 PER= 61,0x10^-6 > Lock (0x1f) Quality= Good Signal= 100,00% C/N= 12,10dB UCB= 4 postBER= 0 > preBER= 55,1x10^-6 PER= 0 > pvr@prueba:~$ > pvr@prueba:~$ sudo dvbv5-zap "La 1 HD." -c channelsv5.conf -a 1 -x using > demux '/dev/dvb/adapter1/demux0' > reading channels from file 'channelsv5.conf' > service has pid type 05: 115 > tuning to 770000000 Hz > (0x00) Signal= 0,00% > Viterbi(0x07) Signal= 100,00% C/N= 10,00dB > Viterbi(0x07) Signal= 100,00% C/N= 0,00dB > Viterbi(0x07) Signal= 100,00% C/N= 0,00dB > Viterbi(0x07) Signal= 100,00% C/N= 0,00dB > Viterbi(0x07) Signal= 100,00% C/N= 0,00dB > Viterbi(0x07) Signal= 100,00% C/N= 0,00dB > > ^Cpvr@prueba:~$ sudo dvbv5-zap "La 1 HD." -c channelsv5.conf -a 0 -x using > demux '/dev/dvb/adapter0/demux0' > reading channels from file 'channelsv5.conf' > service has pid type 05: 115 > tuning to 770000000 Hz > (0x00) Quality= Good Signal= 100,00% C/N= 12,10dB UCB= 4 postBER= > 850x10^-9 preBER= 58,0x10^-6 PER= 51,4x10^-6 > Viterbi(0x07) Signal= 100,00% C/N= 0,00dB > Viterbi(0x07) Signal= 100,00% C/N= 0,00dB > Viterbi(0x07) Signal= 100,00% C/N= 0,00dB > Viterbi(0x07) Signal= 100,00% C/N= 8,80dB > Viterbi(0x07) Signal= 100,00% C/N= 10,00dB > > ^Cpvr@prueba:~$ sudo rmmod cx23885 > pvr@prueba:~$ sudo modprobe cx23885 > pvr@prueba:~$ > pvr@prueba:~$ > pvr@prueba:~$ sudo dvbv5-zap "La 1 HD." -c channelsv5.conf -a 1 -x using > demux '/dev/dvb/adapter1/demux0' > reading channels from file 'channelsv5.conf' > service has pid type 05: 115 > tuning to 770000000 Hz > (0x00) Signal= 0,00% > Lock (0x1f) Quality= Good Signal= 100,00% C/N= 10,40dB UCB= 0 postBER= 0 > preBER= 55,1x10^-6 PER= 0 > pvr@prueba:~$ sudo dvbv5-zap "La 1 HD." -c channelsv5.conf -a 1 -x using > demux '/dev/dvb/adapter1/demux0' > reading channels from file 'channelsv5.conf' > service has pid type 05: 115 > tuning to 770000000 Hz > (0x00) Quality= Good Signal= 100,00% C/N= 10,40dB UCB= 0 postBER= 0 > preBER= 36,7x10^-6 PER= 0 > Lock (0x1f) Quality= Good Signal= 100,00% C/N= 11,90dB UCB= 1 postBER= 0 > preBER= 331x10^-6 PER= 0 > pvr@prueba:~$ sudo dvbv5-zap "La 1 HD." -c channelsv5.conf -a 1 -x using > demux '/dev/dvb/adapter1/demux0' > reading channels from file 'channelsv5.conf' > service has pid type 05: 115 > tuning to 770000000 Hz > (0x00) Quality= Good Signal= 100,00% C/N= 11,90dB UCB= 1 postBER= 0 > preBER= 175x10^-6 PER= 40,7x10^-6 > Lock (0x1f) Quality= Good Signal= 100,00% C/N= 12,30dB UCB= 2 postBER= 0 > preBER= 55,1x10^-6 PER= 0 > pvr@prueba:~$ sudo dvbv5-zap "La 1 HD." -c channelsv5.conf -a 0 -x using > demux '/dev/dvb/adapter0/demux0' > reading channels from file 'channelsv5.conf' > service has pid type 05: 115 > tuning to 770000000 Hz > (0x00) Signal= 0,00% > Viterbi(0x07) Signal= 100,00% C/N= 11,60dB > Viterbi(0x07) Signal= 100,00% C/N= 0,00dB > Viterbi(0x07) Signal= 100,00% C/N= 0,00dB > Viterbi(0x07) Signal= 100,00% C/N= 0,00dB > > ^Cpvr@prueba:~$ sudo dvbv5-zap "La 1 HD." -c channelsv5.conf -a 1 -x using > demux '/dev/dvb/adapter1/demux0' > reading channels from file 'channelsv5.conf' > service has pid type 05: 115 > tuning to 770000000 Hz > (0x00) Quality= Good Signal= 100,00% C/N= 12,30dB UCB= 2 postBER= 0 > preBER= 138x10^-6 PER= 54,3x10^-6 > Viterbi(0x07) Signal= 100,00% C/N= 10,20dB > Viterbi(0x07) Signal= 100,00% C/N= 11,70dB > Viterbi(0x07) Signal= 100,00% C/N= 0,00dB > Viterbi(0x07) Signal= 100,00% C/N= 10,40dB > > ^Cpvr@prueba:~$ > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at > http://vger.kernel.org/majordomo-info.html -- blind Pete Sig goes here... -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
