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: --- 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! :) _______________________________________________ ivtv-users mailing list ivtv-users@ivtvdriver.org http://ivtvdriver.org/mailman/listinfo/ivtv-users
