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Old 04-08-2006, 10:53 AM   #1
MTBer
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Sabrent SBT-TVFM 7130 TV Card


I am having trouble getting my Sabrent SBT-TVFM 7130 TV Card working under linux. I live in the US and use cable tv. If I use MythTV or KDETV I get a black screen. Also KDETV gives this error:
Unable to grab video.
Video display is not possible with the current plugin configuration. Try playing with the configuration options of the V4L2 plugin.

I added this line to modprobe.conf.local:

#options saa7134 card=3 tuner=17

As told in this mini howto:linuxtv.org/v4lwiki/index.php/Sabrent_SBT-TVFM


This is part of my current dmesg:

saa7130[0]: found at 0000:04:06.0, rev: 1, irq: 11, latency: 32, mmio: 0xfdbff000
saa7130[0]: subsystem: 1131:0000, board: Sabrent SBT-TVFM (saa7130) [card=42,autodetected]
saa7130[0]: board init: gpio is 38500
saa7130[0]: Huh, no eeprom present (err=-5)?
: chip found @ 0xc2 (saa7130[0])saa7130[0]: found at 0000:04:06.0, rev: 1, irq: 11, latency: 32, mmio: 0xfdbff000
saa7130[0]: subsystem: 1131:0000, board: Sabrent SBT-TVFM (saa7130) [card=42,autodetected]
saa7130[0]: board init: gpio is 38500
saa7130[0]: Huh, no eeprom present (err=-5)?
: chip found @ 0xc2 (saa7130[0])
tuner 0-0061: type set to 17 (Philips NTSC_M (MK2))
: chip found @ 0xc6 (saa7130[0])
saa7130[0]: registered device video0 [v4l2]
saa7130[0]: registered device vbi0
saa7130[0]: registered device radio0

I don't know if any of this is correct especially the card=3 tuner=17 because the card is autodetected as 42 and it told me to put the lines in modules.config and i have no such file. I put them in modprobe.conf.
 
Old 04-08-2006, 10:55 AM   #2
MTBer
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I have suse 10 with a 2.6.13 kernel.
 
Old 04-08-2006, 01:21 PM   #3
Cathbadh
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I just got the same card yesterday. I operate on a Gentoo 2.6.15-r7 kernel.
I have my troubles getting it to work, too. However, I am successful in getting a composite signal displayed.
It is wierd that your card is being autodetected despite its lack of EEPROM. Mine is certainly not autodetected and I have been passing the card=42 option with limited success
The module mixes up the composite and television signals so I can watch the composite input, but I can only see static on the tv input because I can't tune it when the module thinks the cable input is a composite signal.

If I run kdetv, and pull down the video menu, I have two choices at the bottom of "video4linux2" and "video4linux." If I choose the "video4linux" option, I can reproduce your error message. For the other one it is the same thing as with tvtime.

I will try various card= options and see if I can get one that works
 
Old 04-08-2006, 02:02 PM   #4
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What tuner number are you using?
 
Old 04-08-2006, 02:18 PM   #5
Cathbadh
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I didn't actually set it to a specific number. I tried all 69 tuner numbers and it got me nowhere. They all worked almost exactly the same.
 
Old 04-08-2006, 02:23 PM   #6
Cathbadh
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Here is the shell script that I used that sped up that process:

#/bin/sh
MAXTUNER=69
i=0
while [ $i -lt $MAXTUNER ];
do
rmmod tuner saa7134
modprobe saa7134 card=42 tuner=$i
echo "Actual tuner is:" $i
sleep 1 # this is to make sure /dev/video is registered when tvtime starts
tvtime
i=$(($i+1))
done

unfortunately it didn't help things for me so I will use it to go through the card options
 
Old 04-08-2006, 02:57 PM   #7
Cathbadh
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Nothing but static. Tell me how far you get so I can judge if I have a bad card or connection or not.
 
Old 04-08-2006, 08:00 PM   #8
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I tried a dvd player to try with composite input and I get green static as opposed to a black screen. When I run the script I get this output for every tuner:

Actual tuner is: 68
Running tvtime 0.99.
Reading configuration from /etc/tvtime/tvtime.xml
Reading configuration from /root/.tvtime/tvtime.xml
xvoutput: No XVIDEO port found which supports YUY2 images.

*** tvtime requires hardware YUY2 overlay support from your video card
*** driver. If you are using an older NVIDIA card (TNT2), then
*** this capability is only available with their binary drivers.
*** For some ATI cards, this feature may be found in the experimental
*** GATOS drivers: http://gatos.souceforge.net/
*** If unsure, please check with your distribution to see if your
*** X driver supports hardware overlay surfaces.

I have a modern nvidia card so I don't understand this.
 
Old 04-08-2006, 08:05 PM   #9
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I installed the nvidia drivers but SUSE is still using the vesa drivers.
 
Old 04-08-2006, 11:50 PM   #10
Cathbadh
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You're diving into the wonderful world of video cards. If you have installed the drivers, you need to configure xorg.conf to use that driver instead of vesa. Video hardware accelleration is a big confusing mess. Lucky for you, you have an NVidia. I cannot help you with this issue and it is kind of off-topic.
 
Old 04-11-2006, 06:02 PM   #11
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Any luck yet?
 
Old 04-12-2006, 07:25 PM   #12
MTBer
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I had sucess with tuner 62
 
Old 04-13-2006, 05:46 PM   #13
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The 2 inputs also seem to be mixed on my card. I can get TV on Composite1 but i can't change the channel and there is no sound. Does anyone know how to g fix this?
 
Old 04-14-2006, 12:26 AM   #14
Cathbadh
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Just a noob's guess, but it might be possible just by rearranging some digits in this portion of code from saa7134-cards.c:

[SAA7134_BOARD_SABRENT_SBTTVFM] = {
/* Michael Rodriguez-Torrent <mrtorrent@asu.edu> */
.name = "Sabrent SBT-TVFM (saa7130)",
.audio_clock = 0x00187de7,
.tuner_type = TUNER_PHILIPS_NTSC_M,
.radio_type = UNSET,
.tuner_addr = ADDR_UNSET,
.radio_addr = ADDR_UNSET,
.inputs = {{
.name = name_comp1,
.vmux = 1,
.amux = LINE1,
},{
.name = name_tv,
.vmux = 3,
.amux = LINE2,
.tv = 1,
},{
.name = name_svideo,
.vmux = 8,
.amux = LINE1,
}},
.radio = {
.name = name_radio,
.amux = LINE2,
},
},

Changing this might provide a solution, but it would much more likely trash your kernel. Backup this file, and make another bootable backup kernel before messing with this. I certainly have not tried this, and I am a little scared to.
 
Old 04-14-2006, 12:57 AM   #15
Cathbadh
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Well, that seemed to work to an extent. Changing the .vmux variables of the composite and tv seemed to clear up the changeup, but I still get nothing but static on all channels. I hope this works for you.
Right now, my priority is video. Once I get that working, I will try to get the audio as well.
 
  


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