[mythtv-users] performance and missing channels

Michael T. Dean mtdean at thirdcontact.com
Mon Oct 4 21:30:33 EDT 2004

On 10/04/2004 07:28 PM, Tilman Kispersky wrote:

> Thanks for your patience.


> I installed CVS-LATEST ivtv but not kernel patch yet.
> I'm not sure if this is newer than or equal to 0.10-pre2-ckXXX

It's 0.1.10-pre2, but without any of the ck patches (Chris is currenly 
on 114f, so there have been a *lot* of interim versions).

> tvee: tuner=<unknown> (idx=85, type=-1)
> tvee: tuner fmt=NTSC(M) (eeprom=0x08, v4l2=0x00001000)

You have the TCL 2002N tuner.  This tuner is not supported by the tuner 
module included with the Linux kernel. Therefore, you need to patch your 
tuner module to get access to all your channels.

Unfortunately, patching your tuner module will probably require you to 
patch/re-compile/re-install your tuner module.  Whereas Axel Thimm has 
packages available for Fedora Core, I don't know of any sources of 
patched modules for Debian.  (Any Debian packagers out there who want to 
make some available????)

The patch you need can be found at 
http://www.poptix.net/ivtv/Sep-2004/msg00773.html .  You will need the 
patch for Linux 2.x (either 2.4 or 2.6, depending on your kernel 
version).  Note that there are five patch "files" on that page 
(ivtv-0.1.10-pre2-ck100z, ivtv-0.1.10-pre2-ck108j, linux-2.4.27, linux, and a video4linux snapshot releases), so make sure you take the 
appropriate parts (look for the filenames in the lines starting with 
"diff -Naur").

Once you patch your tuner module, you can simply specify:
options tuner type=50
and continue using ivtv 0.1.9.

If you prefer to upgrade, I recommend ivtv-0.1.10-pre2-ck100z with the 
appropriate patch from the same page as the Linux patch.  Note that if 
you're using Linux 2.6, you may (depending on how your kernel was 
compiled) also need a patch for the use of sys_* calls ( 
http://www.poptix.net/ivtv/Sep-2004/msg00829.html ).


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