Subject: [mythtv-users] Re: mythtv 0.14, bttv 0.9.12/13 + Kernel 2.6.3-4 - low brightness red screen on channel change

[Gregory J. McGee]

This little bttv bug has been the bane of my existence (OK, perhaps just
annoying) for awhile, although there is usually nothing on other than on
SciFi worth recording anyway. I'm delighted it's fixed, now I can record
Monster Garage and American Chopper as well as Farscape and such.

I'm running Mandrake Cooker, and thacs 9.2 mythtv build--works great,
Thacs 10.0 build has issues for me not transcoding and both it and the
lates cvs crater mid recording regularly. I haven't tried rebuilding the
src rpms as it would be easier to just build from source, as he has some
funky macros for his multi-distro builds.

Finally built a custom kernel, needed preemption anyway, was taking a
hit with audio dropouts while doing other things on the box.

(2.6.3-4mdk IIRC) I simply omitted bttv in "make xconfig", changed a few
other unrelated things (preemption, Athlon optimized, killed off some
things) and built.

The following is somewhat MDK10-cooker specific, but essentially it
covers 2.4 as well, just omit bttv and build it externally.

(2.6--- make mrproper (after saving .config) make prepare (after moving
it back and tweaking to taste) make modules && make modules_install &&
make bzImage && make modules_install (don't ask, the depfile gets "lost"
or something) && make install.

If mkinitrd complains about the dc395_trm module missing, just rerun
with ---omit-scsi-modules (that module has been renamed and is part of
the std kernel now IIRC)

Once you are all built/installed, and redefine /usr/src/linux, reboot,
redo the nvidia modules as usual (if applicable), and run make && make
install in the bttv tree. Ignore any complaints about stale modules,
they appear bogus, as it works fine.. You may get complaints about the
dvb modules, I ignored them as I have no such hardware.

The module build (and _maybe_ the nvidia build) will look at the running
kernel for versioning, so redefining may not be absolutely required, but
building other things using kernel headers later may get... weird. I
suggest it anyway.

Fire up xawtv, usually you will have video and no audio on a bttv myth
setup if you are using a patch cord (muted line in, remember?)

Mythtv and Tvtime now change channels properly. xawtv always did, it
seemed to always reset on any channel change, working around the bug.
-- 
Gregory J. McGee <gjmcgee at cableone.net>