Hi, I've currently have 2 MSI Megasky 580s running as inputs to a mythtv system. However even though they are completely identical cards running of the same aerial in a strong signal area I get wildly different tuning results for both cards - one of them doesn't lock even though the signal strength is high. I'm running an ~3 week old CVS checkout from the v4l-dvb repository, and have patched the zarlink code to include a USB sleep delay of 15us as described in the following mails: http://www.linuxtv.org/pipermail/linux-dvb/2007-February/015910.html http://linuxtv.org/pipermail/linux-dvb/2007-February/015863.html Both cards work fine on Windows - I believe it may have something to do with the Automatic Gain Control but can't figure it out. I've added an i2c write to zl10535 code as described in the following mail but it has no effect. http://www.linuxtv.org/pipermail/linux-dvb/2007-February/015927.html I happy to test any patches or code that people may have. Thanks Mandeep Gill Output from "lsmod" Module Size Used by dvb_usb_gl861 7108 0 dvb_usb 20364 1 dvb_usb_gl861 dvb_core 72496 1 dvb_usb dvb_pll 13764 1 dvb_usb zl10353 6024 2 qt1010 6020 2 i2c_isa 4992 0 Output from "uname -a" Linux bowser 2.6.20-gentoo-r3 #1 Mon Mar 19 19:13:37 GMT 2007 x86_64 AMD Sempron(tm) Processor 3200+ AuthenticAMD GNU/Linux Output from Tzap on Tuner 0 - same aerial, locks and works fine tzap -a 0 "BBC ONE" using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' reading channels from file '/root/.tzap/channels.conf' tuning to 641833330 Hz video pid 0x0258, audio pid 0x0259 status 00 | signal 7c2c | snr 0000 | ber 00000000 | unc 00000000 | status 1e | signal 8200 | snr cfcf | ber 00000000 | unc 00000000 | FE_HAS_LOCK status 1e | signal 8304 | snr cfcf | ber 00000000 | unc 00000000 | FE_HAS_LOCK status 1e | signal 81dc | snr cfcf | ber 00000000 | unc 00000000 | FE_HAS_LOCK status 1e | signal 820c | snr cece | ber 00000000 | unc 00000000 | FE_HAS_LOCK status 1e | signal 81b0 | snr d2d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK Output from Tzap on Tuner 1 - same aerial, doesn't lock tzap -a 1 "BBC ONE" using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0' reading channels from file '/root/.tzap/channels.conf' tuning to 641833330 Hz video pid 0x0258, audio pid 0x0259 status 00 | signal 76c4 | snr 0000 | ber 00000000 | unc 00000000 | status 00 | signal 7608 | snr 0000 | ber 00000000 | unc 00000000 | status 00 | signal 757c | snr 0000 | ber 00000000 | unc 00000000 | status 00 | signal 75b8 | snr 0000 | ber 00000000 | unc 00000000 | status 00 | signal 75c4 | snr 0000 | ber 00000000 | unc 00000000 | status 00 | signal 763c | snr 0000 | ber 00000000 | unc 00000000 | status 00 | signal 7614 | snr 0000 | ber 00000000 | unc 00000000 | _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
