[mythtv-users] Getting this working should NOT be this hard!

[Harry Devine]

Brad DerManouelian wrote:
> On Oct 20, 2008, at 1:39 PM, Harry Devine wrote:
>
>   
>> I had to download dvb-utils for this, which wasn't a big deal, but  
>> when
>> I try to run the scan, I get:
>>
>> hdevine at hdevine-desktop:~$ sudo scan
>> /usr/share/doc/dvb-utils/examples/scan/atsc/us-PA-Philadelphia >
>> /tmp/channels.conf
>> [sudo] password for hdevine:
>> scanning /usr/share/doc/dvb-utils/examples/scan/atsc/us-PA- 
>> Philadelphia
>> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
>> main:2247: FATAL: failed to open '/dev/dvb/adapter0/frontend0': 16
>> Device or resource busy
>>
>> This was after I rebooted the box just to be sure.  Any ideas?
>>     
>
> mythbackend holds open the DVB tuner while it's running. Turn it off  
> before scanning.
>
> - Brad
>
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>   
OK, that makes sense.  But before I do that, I figured I'd try and see 
if the new drivers worked.  So I fired up LiveTV and tried to see what I 
could see.  The Analog channel of my local ABC affiliate was the same as 
it was before.  Very slow, choppy, and with no sound at all.  The DVB 
channel for the same affiliate just shows the OSD menu all the time, a 
still frame of whatever was on the channel when it got tuned, and the 
sound sounds like a baseball card stuck in a bicycle tire.

Here's what my frontend log shows, but I'm not sure what its telling me 
(seems like a few things wrong):
2008-10-20 17:23:13.313 TV: Attempting to change from None to WatchingLiveTV
2008-10-20 17:23:13.314 Using protocol version 40
2008-10-20 17:23:14.625 DPMS Deactivated
2008-10-20 17:23:14.679 Opening audio device 'default'. ch 2(2) sr 48000
2008-10-20 17:23:14.680 Opening ALSA audio device 'default'.
ALSA lib control.c:909:(snd_ctl_open_noupdate) Invalid CTL /dev/mixer
2008-10-20 17:23:14.699 AudioOutput Warning: Mixer attach error -2: No 
such file or directory
                        Check Mixer Name in Setup: '/dev/mixer'
2008-10-20 17:23:14.804 VideoOutputXv Error: Could not find suitable 
XVideo surface.
2008-10-20 17:23:14.804 VideoOutputXv: Falling back to X11 video output 
over a network socket.
                              *** May be very slow ***
2008-10-20 17:23:14.804 VideoOutputXv Error: XCreateImage failed: 
XJ_disp(0x1792c20) visual(0x16a7eb0)
                        XJ_depth(16) WxH(800x600) bpl(1600)
2008-10-20 17:23:14.805 VideoOutputXv Error: Failed to create X buffers.
2008-10-20 17:23:14.884 Couldn't load deinterlace filter
2008-10-20 17:23:14.889 OSD Theme Dimensions W: 640 H: 480
2008-10-20 17:23:15.495 TV: Changing from None to WatchingLiveTV
2008-10-20 17:23:15.497 Realtime priority would require SUID as root.
2008-10-20 17:23:15.501 VideoOutputXv Error: GetRefreshRate(): X11 
ModeLine query returned zeroes
Initialize Yadif Deinterlacer. In-Pixformat = 1 Out-Pixformat=1
yadifdeint: size changed from 0 x 0 -> 480 x 480
2008-10-20 17:23:15.557 VideoOutputXv Error: GetRefreshRate(): X11 
ModeLine query returned zeroes
2008-10-20 17:23:15.557 Video timing method: USleep with busy wait
2008-10-20 17:23:32.699 TV: Attempting to change from WatchingLiveTV to None
2008-10-20 17:23:33.036 TV: Changing from WatchingLiveTV to None
2008-10-20 17:23:33.132 DPMS Reactivated.

The DVB channel change spews out a ton of these errors in the frontend log:
2008-10-20 17:27:36.473 WriteAudio: buffer underrun
2008-10-20 17:27:36.516 WriteAudio: buffer underrun
2008-10-20 17:27:36.561 WriteAudio: buffer underrun
2008-10-20 17:27:36.604 WriteAudio: buffer underrun


Any ideas on what's going on here?  Are the new drivers that I installed 
earlier in the thread not really being used?
Thanks,
Harry