Opened 17 years ago
Closed 17 years ago
#3495 closed defect (worksforme)
Can't view a valid QAM channel unless tuning to the other channel on the same freq first
Reported by: | anonymous | Owned by: | danielk |
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Priority: | minor | Milestone: | 0.21 |
Component: | dvb | Version: | head |
Severity: | medium | Keywords: | dvb, qam |
Cc: | Ticket locked: | no |
Description
I am using QAM and have two channels on the same freq. (multiplex) Here is their channel.conf values.
KVUE1:573000000:QAM_256:64:65:42 KEYE1:573000000:QAM_256:66:67:41
When watching live TV I can not view KEYE1 with out first tuning to KVUE1. If I don't this results in a black screen and mythtv telling me it can't get a signal. If I then switch to another channel say like...
KXAN1:585000000:QAM_256:67:68:2
and then try to go back to KEYE1 I get the blank screen again unless I again go to KVUE1 right before.
If I have recording on KEYE1 it just puts an empty file on my recordings screen.
I did notice in the backend logs that I get a "DTVSM(0): Ignoring encrypted program" when the problem occurs but that doesn't show up if i go to KVUE1 first.
The problem is with mythtv because I used azap to tune to KEYE1 and was able to view it with mplayer without going to KVUE1 first.
I am using gentoo and the mythtv-0.20.1_p13344 ebuild and through trial and error figured out the bug entered mythtv sometime after mythtv 0.20 because the ebuild 0.20_p13110 worked.
I know the devs don't like the ebuild version numbers so here are actual version info.
The version that works correctly:
mythbackend ~ # mythbackend --version Library API version: 0.20.20060828-3 Source code version: exported Options compiled in:
linux release using_v4l using_oss using_alsa using_ivtv using_lirc using_dvb using_x11 using_xv using_xrandr using_opengl_vsync using_opengl using_frontend using_backend using_bindings_perl
The version that is broken:
mythbackend ~ # mythbackend --version Library API version: 0.20.20060828-4 Source code version: exported Options compiled in:
linux debug using_v4l using_oss using_alsa using_ivtv using_lirc using_dvb using_x11 using_xv using_xrandr using_opengl_vsync using_opengl using_frontend using_backend using_bindings_perl
The card I am using is a AirStar?-HD5000-PCI
Here is the modinfo on b2c2_flexcop
filename: /lib/modules/2.6.19-gentoo-r5/kernel/drivers/media/dvb/b2c2/b2c2-flexcop.ko author: Patrick Boettcher <patrick.boettcher@… description: B2C2 FlexcopII/II(b)/III digital TV receiver chip license: GPL vermagic: 2.6.19-gentoo-r5 SMP preempt mod_unload PENTIUM4 depends: dvb-pll,stv0299,lgdt330x,i2c-core,nxt200x,stv0297,bcm3510,firmware_class,mt312,mt352
Attached to this ticket is a gdb and mythbackend log of the problem happening. I first went to KEYE1 (1531) to show I can't view it. I then go to KVUE1 (1511) and then back to KEYE1 (1531) to show I am able to view it this time.
Attachments (2)
Change History (5)
comment:1 follow-up: 2 Changed 17 years ago by
If you need any additional information or need me to test anything just email me and I would be more then glad to help.
comment:2 Changed 17 years ago by
I am seeing this same behavior on the same two channels (I am in the same city). FC6 with .20 fixes.
comment:3 Changed 17 years ago by
Resolution: | → worksforme |
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Status: | new → closed |
backtrace of problem occurring