> With the Azurewave AD-SP400 (Twinhan VP-1041 / Technisat HD2 / > ?poss. Terratec Cinergy S2 PCI HD) > there seems to be a driver bug when tuning some channels immediately > after boot or after resuming from sleep (which is entered after 1 minute > idle). > So the initialisation seems to be unsuitable for tuning some channels. > > But... if another channel is tuned successfully first then the bad > channels *CAN* be tuned > (if you are quick and do it before it sleeps again). > > It looks like the problem channels are all horizontal but perhaps other > parameters are > relevant too/instead. > > Can anyone help? > Instructions for reproducing the problem on Astra 19.2E or Hotbird 13.0E > are below. > > I don't know whether the problem is in the mantis, stb0899, stb6100 or > lnbp21 code. Problem solved with the patch below. I found that both problems tuning channels (#1 immediately after boot and #2 after sleep) are caused by the lnbp21 voltage OFF setting. To fix #1: the LNB voltage needs to be turned on when the lnbp21 is attached, and to fix #2: turning the voltage off on sleep needs to be disabled. To keep the voltage on, we need to make sure that register bit LNBP21_EN is always set. I note that as well as controlling the voltage regulator blocks this register bit also controls a loopthrough switch -- clearing the bit takes the lnbp21 out of the LNB line, which could be used to allow other circuitry to do LNB power and control. I don't have any info on how the card is actually wired. It seems best to keep the EN bit always set, because I know clearing it causes trouble. It turns out there is already a mechanism for specifying register bits to be overridden in the lnbp21 attach call (already used for another card) and we just need to apply the following one-line patch to the VP-1041 attach. This is against the repository at http://mercurial.intuxication.org/hg/s2-liplianin. Signed-off-by: Hans Werner <hwerner4@xxxxxx> diff -r 28324bc3d694 linux/drivers/media/dvb/mantis/mantis_dvb.c --- a/linux/drivers/media/dvb/mantis/mantis_dvb.c +++ b/linux/drivers/media/dvb/mantis/mantis_dvb.c @@ -239,7 +239,7 @@ int __devinit mantis_frontend_init(struc vp1041_config.demod_address); if (stb6100_attach(mantis->fe, &vp1041_stb6100_config, &mantis->adapter)) { - if (!lnbp21_attach(mantis->fe, &mantis->adapter, 0, 0)) { + if (!lnbp21_attach(mantis->fe, &mantis->adapter, LNBP21_EN, 0)) { printk("%s: No LNBP21 found!\n", __FUNCTION__); mantis->fe = NULL; } Regards, Hans > > > > When it goes into sleep mode I see the following in dmesg: > > > [ 522.821625] _stb0899_read_reg: Reg=[0xf12a], data=58 > > > > > > > > > [ 522.821632] stb0899_i2c_gate_ctrl: Disabling I2C Repeater ... > > > > > > > > > [ 522.821634] stb0899_write_regs [0xf12a]: 58 > > > > > > > > > [ 522.822681] stb0899_sleep: Going to Sleep .. (Really tired .. :-)) > > > > > > So the Twinhan 1041 is quite useless for me at the moment. > > > > Try the following channels.conf for Astra at 19.2E: > > > > TVEi;CANALSATELLITE:11567:vS0C56M2:S19.2E:22000:58:59:61:0:9022:1:1024:0 > > > ZDF;ZDFvision:11953:hS0C34M2:S19.2E:27500:110:120=deu,121=2ch;125=deu:130:0:28006:1:1079:0 > > > > Then do the following (in this order): > > 0. point dish to 19.2E. > > 1. tune to TVEi > > szap-s2 -a 0 -r -p -V -c ~/channels.conf.astra1 "TVEi;CANALSATELLITE" > > > > 2. hit ctrl-c, and wait 1 minute until the frontend sleeps (check dmesg) > > > > 3. try to tune to ZDF. It FAILS (hangs). > > szap-s2 -a 0 -r -p -V -c ~/channels.conf.astra1 "ZDF;ZDFvision" > > > > 4. ctrl-c and then szap-s2 to TVEi. That WORKS. > > > > 5. ctrl-c and then quickly (before sleep) szap-s2 to ZDF. Now it WORKS > > too. > > You can keep changing to other channels provided that it is not allowed > to > > get into a sleep. > > > > Similar problems are seen using scan-s2 instead of szap-s2. > > > For Hotbird try the following channels.conf.hotbird: > > BBC World News:12596:vS0C34M2:S13.0E:27500:163:92:41:0:8204:318:9400:0 > Nile > News:12539:hS0C34M2:S13.0E:27500:1185+1184:1187=ara:0:0:8983:318:9100:0 > Toscana Channel:11541:vS0C56M2:S13.0E:22000:521:522:0:0:3622:200:1800:0 > ZDF:11054:hS0C56M2:S13.0E:27500:570:571=deu:572:0:8011:318:12700:0 > > Then do the following (in this order): > 0. point dish to 13.0E. > 1. tune to Toscana Channel (or BBC World News) > szap-s2 -a 0 -r -p -V -c ~/channels.conf.hotbird "Toscana Channel" > > 2. hit ctrl-c, and wait at least 1 minute until the frontend sleeps (check > dmesg) > > 3. try to tune to Nile News (or ZDF). It FAILS (hangs with -r -p or > doesn't lock without those options). > szap-s2 -a 0 -r -p -V -c ~/channels.conf.hotbird "Nile News" > > 4. Do ctrl-c and then szap-s2 to Toscana Channel (or BBC World News). That > WORKS. > > 5. Do ctrl-c and then quickly (before sleep) szap-s2 to Nile News (or > ZDF). Now it > WORKS too! > You can keep changing to other channels provided that it is not allowed to > get into a sleep. > > Or even simpler: > just boot the computer (or sudo modprobe -r mantis && sudo modprobe > mantis) > and skip number 1 and number 2, i.e. do 0,3,4,5. > > > Can someone reproduce this? (or fix the problem ;-) ). > > Hans -- Release early, release often. Psssst! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen: http://www.gmx.net/de/go/multimessenger _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
