On Sunday 27 August 2006 20:21, Eric Paynter wrote:
> I picked up a new Hauppauge PVR-500 this weekend, and, like many, I
> had the problem with video0 having the appearance of a very weak
> signal while video1 was fine. Digging through the archives, I found a
> thread with a patch:
>
> http://ivtvdriver.org/pipermail/ivtv-users/2006-June/002998.html
>
> Unfortunately, this patch is only good for ivtv 0.4.x series on
> kernel <= 2.6.15.
>
> I'm stuck with 2.6.17 because my wireless drivers are broken on
> 2.6.15. But there doesn't even exist a tuner.c file on which to try
> to apply the patch in those kernel sources. After digging around in
> the kernel code, I found that the affected code now resides in
> tuner-types.c.
>
> Note: This patch does *not* solve the fact that the tuner is
> mis-identified as a TCPN_2121P30A instead of a TCPN_2221P30A. Those
> changes where all over the map and I didn't want to break anything,
> so I made the simplest change possible, which fixed the problem, and
> now I'm not going to touch it. Rumour is that 2.6.18 will have a fix
> included, so wait until then for the full fix. Here is the
> ridiculously simple patch that solves the immediate problem:
Yes, the fix is in 2.6.18. And I actually suspect there is both a
TCPN_2121P30A and a TCPN_2221P30A, however I don't have solid proof of
it. If so, then they seem to behave pretty much identical. It would be
nice if someone can confirm that they have a PVR500 with a
TCPN_2121P30A as opposed to a TCPN_2221P30A.
Hans
>
>
>
> --- tuner-types.c 2006-08-27 10:52:28.000000000 -0700
> +++ tuner-types.c.patched 2006-08-27 10:53:05.000000000 -0700
> @@ -995,9 +995,9 @@
> /* ------------ TUNER_SAMSUNG_TCPN_2121P30A - Samsung NTSC
> ------------ */
>
> static struct tuner_range tuner_samsung_tcpn_2121p30a_ntsc_ranges[]
> = { - { 16 * 130.00 /*MHz*/, 0xce, 0x01, },
> - { 16 * 364.50 /*MHz*/, 0xce, 0x02, },
> - { 16 * 999.99 , 0xce, 0x08, },
> + { 16 * 130.00 /*MHz*/, 0xce, 0x01+4, },
> + { 16 * 364.50 /*MHz*/, 0xce, 0x02+4, },
> + { 16 * 999.99 , 0xce, 0x08+4, },
> };
>
> static struct tuner_params tuner_samsung_tcpn_2121p30a_params[] = {
>
>
>
> This can also be found here for the word-wrap impared:
>
> http://www.madslab.com/pvr500_samsung_patch_2.6.17.diff
>
>
> To make this work, make sure your tuners are idle and do the
> following:
>
> Download the patch file and store it somewhere. Then as root, do:
>
> cd /usr/src/linux/drivers/media/video/
> patch -p0 < /path/to/samsung_patch_2.6.17.diff
> cd /usr/src/linux
> make ; make modules_install
> rmmod ivtv ; rmmod tuner
> modprobe tuner ; modprobe ivtv
>
>
> Done! No reboot - didn't even have to restart the backend. I did all
> this while my wife was watching a previously recorded show and she
> didn't even feel it. After she was done, I switched to live TV and it
> was fixed. Woo hoo!!! :)
>
> -Eric
>
> p.s. Thanks Hans for figuring this one out! :)
>
>
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