Arch Linux

nomorewindows

Member

Registered: 2010-04-03

Posts: 3,370

[Solved by bug request] bt878 tv ok, no radio

Been using the same tv tuner + radio fm combo card and since update to linux 3 still able to use xawtv but will not tune fm radio using xawtv package radio program.  Card will still tune fm radio on a windows machine with the btwincap.sourceforge.net driver + amcap program.

Last edited by nomorewindows (2012-09-19 17:27:08)

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nomorewindows

Member

Registered: 2010-04-03

Posts: 3,370

Re: [Solved by bug request] bt878 tv ok, no radio

I noticed switching between the ttv program and the radio program that the audio of the tuned tv station is still going so the problem is that the radio is not being tuned at all for whatever reason.  Presuming it has something to do with the kernel module?

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I may have to CONSOLE you about your usage of ridiculously easy graphical interfaces...
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nomorewindows

Member

Registered: 2010-04-03

Posts: 3,370

Re: [Solved by bug request] bt878 tv ok, no radio

Switching back to the lts kernel gives us the functionality back again.

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I may have to CONSOLE you about your usage of ridiculously easy graphical interfaces...
Look ma, no mouse.

chewy

Member

Registered: 2005-01-01

Posts: 4

Re: [Solved by bug request] bt878 tv ok, no radio

same problem with a haupagge board (bt848), have you found any other solution?

blextil

Member

Registered: 2012-02-08

Posts: 4

Re: [Solved by bug request] bt878 tv ok, no radio

And same problem still exists even with new 3.2.4-1-ARCH kernel. Card is PixelViewPro.

options bttv card=37 tuner=5 radio=1

Linux R:O:T 3.2.4-1-ARCH #1 SMP PREEMPT Sat Feb 4 11:21:15 UTC 2012 i686 AMD Athlon(tm) XP 3200+ AuthenticAMD GNU/Linux

LTS pre v3 kernel works just fine. Has anybody got any clue how to solve this problem?

blextil

Member

Registered: 2012-02-08

Posts: 4

Re: [Solved by bug request] bt878 tv ok, no radio

maybe this could be helpful to someone: http://www.spinics.net/lists/linux-media/msg40001.html

nomorewindows

Member

Registered: 2010-04-03

Posts: 3,370

Re: [Solved by bug request] bt878 tv ok, no radio

I can in fact run radio and xawtv at the same time, the audio comes through, but the picture on the xawtv turns black.  Wonder if /dev/radio is even being touched and that explains why it doesn't retune in FM mode?

Just happened to find a kernel26 in the AUR:  rtai-kernel  (grub it now while you still can)
It may take awhile to compile it from scratch and the full thing (it must be is a 1 GB package install, 120MB package file).

Last edited by nomorewindows (2012-02-17 03:10:11)

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I may have to CONSOLE you about your usage of ridiculously easy graphical interfaces...
Look ma, no mouse.

grapeli23

Member

Registered: 2009-08-19

Posts: 13

Re: [Solved by bug request] bt878 tv ok, no radio

Works.
Add a line in the card definition file bttv-cards.c.

.has_radio      = 1,

http://www.spinics.net/lists/linux-media/msg45899.html

nomorewindows

Member

Registered: 2010-04-03

Posts: 3,370

Re: [Solved by bug request] bt878 tv ok, no radio

That means I'd have to download the full kernel just to change one line.  The card may differ on this also.
Speaking of differing cards, it lists my card (card=10) and there isn't even an entry for (10 or 0xa) in the bttv-cards.c for it?  This is on the working kernel.

Last edited by nomorewindows (2012-04-26 14:47:09)

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I may have to CONSOLE you about your usage of ridiculously easy graphical interfaces...
Look ma, no mouse.

nomorewindows

Member

Registered: 2010-04-03

Posts: 3,370

Re: [Solved by bug request] bt878 tv ok, no radio

Looking back at the 2.6.35-7-RTAI bttv-cards.c, the following line as pointed out by http://www.spinics.net/lists/linux-media/msg45899.html above, is missing this:

	        tun_setup.mode_mask = T_ANALOG_TV | T_DIGITAL_TV;
		tun_setup.type = btv->tuner_type;
		tun_setup.addr = addr;

		if (bttv_tvcards[btv->c.type].has_radio)
			tun_setup.mode_mask |= T_RADIO;

		bttv_call_all(btv, tuner, s_type_addr, &tun_setup);

whereas his suggestion was:

	        tun_setup.mode_mask = T_ANALOG_TV;
		tun_setup.type = btv->tuner_type;
		tun_setup.addr = addr;

		if (btv->has_radio)
			tun_setup.mode_mask |= T_RADIO;

		bttv_call_all(btv, tuner, s_type_addr, &tun_setup);

Seems as though the mode_mask has been modified by the fact that the T_DIGITAL_TV was taken out. 
Maybe this should be noted upstream, unless this was intentional, but I don't think so.

After compiling, it does not take the T_DIGITAL_TV, so his change must be what's necessary.

Last edited by nomorewindows (2012-07-14 23:53:49)

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I may have to CONSOLE you about your usage of ridiculously easy graphical interfaces...
Look ma, no mouse.

nomorewindows

Member

Registered: 2010-04-03

Posts: 3,370

Re: [Solved by bug request] bt878 tv ok, no radio

As of kernel 3.5.3, radio operation has been restored.

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I may have to CONSOLE you about your usage of ridiculously easy graphical interfaces...
Look ma, no mouse.