On 07.05.2012 14:34, Midas wrote:
Am 06.05.2012 12:20, schrieb Klaus Schmidinger:
On 06.05.2012 11:59, Midas wrote:
Am 06.05.2012 11:51, schrieb Klaus Schmidinger:
On 06.05.2012 01:29, Midas wrote:
Am 05.05.2012 16:31, schrieb Klaus Schmidinger:
On 05.05.2012 09:22, Midas wrote: > Hi there, > > i have two satellite devices in an lnb-sharing setup. As said in the > topic since update to vdr 1.7.27 recordings do not put data on the > disk > anymore and AV liveview with the vdr-sxfe frontend freezes if > bonding > sets the Twinhan Card to master. > > The setup is Technisat Skystar HD and KWorld DVBS Satellite Card > (clone > of Twinhan VP1020), so it is DVBS2 and DVBS mixed. VDR is 1.7.27. > > I have been using vdr 1.7.21 before with lnb-sharing applied. In > the old > setup there was a similar problem in that switching to vertical > didn't > work reliably or at all respectively. I managed to overcome this > behaviour by patching the Twinhan driver to eliminate _any_ voltage > output on the card. Once i found a working patch vdr has been > running > for months without any problems anymore. > > Note that the 'new' issue occurs with the vanilla Twinhan driver > and my > patched version as well. > > Is it maybe possible to force the use of one card as Master bonding > device or does anyone have other ideas to overcome the problems?
If the master of a set of bonded devices doesn't get a signal, VDR should automatically switch the master to the next of the bonded devices. See cDvbTuner::Action(), case tsTuned:
if (bondedTuner&& bondedMaster) bondedMasterFailed = true; // give an other tuner a chance incase the sat cable was disconnected
Of course, making sure the devices work properly in the first place might be a good idea ;-)
Do i get the term Master wrong? Master in my assumption should be the device where the liveview signal comes from unless there is a recording in which case the device tuned to the recording transponder should be Master.
In the context of device bonding "master" means the device that actually controls the LNB (either trough voltage/tone or DiSEqC). It has nothing to do with whether this device is used for live view or recording.
In the first case the slave cannot steal the tuning parameters to prevent breaking liveview whereas in the second the liveview slave cannot interefere with the ongoing recording.
Concerning my issue the ongoing search for transponders on the non-liveview device seems to break with the liveview device which should not happen. Yet in case of recordings i am bit unsure what interferes with what. I am also still unsure if it is a driver or lnb sharing issue though the v/h issue in my former setup points to the first case at least for a certain kind.
Do i conclude right, setting the bondedMasterFailed to false in the switch construct would be a dirty hack to workaround my bogus setup?
I'm not sure about that. I would suggest you use VDR with only one single device at a time and make sure it can receive all polarizations and bands. If a device or driver fails to deliver that, you should try to fix it. VDR assumes that a device actually works ;-)
Just to add this missing info: Both devices work perfectly in a single device setup. Both devices were even capable in the former 1.7.21 dual device setup (with my patch).
Well, then please post your exact setup together with a step-by-step set of instructions on how to reproduce the problem. Maybe I can reproduce it here on my system.
Klaus
Thank you Klaus for your offer and your effort.
I guess this is one of the bugs (not necessarily a vdr one!) which are relativley hard to track. Yesterday i have reproduced the issue with a vanilla vdr 1.7.27 and the only plugin being xineliboutput to minimize potential bug sources. I did not observe any changes, the issue still appears.
My setup:
debian squeeze self-built Kernel 3.0.4 media-build git20120504 vdr 1.7.27 Technisat Skystar HD (PCI DVB-S2) -> clone of and recognized as Technotrend S-3200 (stb0899) KWorld DVB Satellite card -> clone of Twinhan VP1020 (PCI DVB-S) WinTV Nova T-Stick (USB DVB-T) xineliboutput cvs20120415 vdr-sxfe with vdpau on a 8400 GS PCIE nvidia driver 295.40
Satellite setup: One satellite cable that is being distributed with a splitter (diode protected). No priority circuit afaik. In vdr both devices are set to be connected to cable 1. This is a Diseqc setup and Astra 19.2E and Hotbird 13.0E are receivable. The rest of the setup remains unclear yet most likely the cable goes to a switch or something though surely not directly into the lnb.
Symptoms: AV signal sometimes stops while watching a DVB-S(2) channel (T not tested). Concerning the log this most likely happens when vdr fails to tune to a channel while scanning for new transponders in the background. Device bonding then tries to make another tuner tune to this channel which in this case obviously is the liveview device. This not only freezes the liveview AV but also makes recordings stop to write data on the disc though still being shown as recording in the vdr osd. Note that the liveview AV signal can be reactivated by switching to another channel. However this does not revive a recording. (Unsure: If i recollect correctly it is even possible to switch to channels which should not be allowed to switch to because of the active timer.)
How to reproduce: Install vdr 1.7.27, start watching a channel. After minutes the av signal freezes and the log tells us that device bonding has switched the master.
(Superstition: There is an imho very small chance this can be triggered by cpu load which might point to setup probs. I observed the issue once when i called the osd and in another case when i started compiling the media build drivers).
Looks like this comes from the "bondedMasterFailed" mechanism, which switches the master to an other device if one fails. Apparently this disturbs live viewing or recordings if a channel can't be tuned to in the EPG scan (or otherwise).
Since the whole device bonding (formerly known as "LNB sharing") is a makeshift solution, anyway, I guess putting in that bondedMasterFailed mechanism was just too much of a good thing. I guess it will be better if I just drop that.
Please try whether the following change fixes your problem:
--- dvbdevice.c 2012/04/04 09:49:12 2.70 +++ dvbdevice.c 2012/05/08 09:49:11 @@ -878,9 +878,6 @@ isyslog("frontend %d/%d timed out while tuning to channel %d, tp %d", adapter, frontend, channel.Number(), channel.Transponder()); lastTimeoutReport = time(NULL); } - cMutexLock MutexLock(&bondMutex); - if (bondedTuner && bondedMaster) - bondedMasterFailed = true; // give an other tuner a chance in case the sat cable was disconnected continue; } WaitTime = 100; // allows for a quick change from tsTuned to tsLocked
Klaus