[mythtv-users] mythtv-setup issue: KWorld USB ATSC TV Stick UB435-Q V3

[James Miller]

On Fri, 27 Mar 2015, Saul wrote:

> The node in /dev is created by kernel, no USE flag involved.
> After looking at your post on Gentoo forums I'd say there is a
> difference between your dmesg and the one from linuxtv wiki. Most
> notably this:
>
> i2c i2c-10: tda18212: NXP TDA18212HN successfully identified
>
> TV receiver/tuner is a complex device, it needs several drivers to
> function properly.

Thanks for your input, Saul. I checked lsmod output more carefully last 
night, and tda18212 was among those in the output--although I must admit 
that I cannot say for certain that it did not show up there after I'd 
done a manual modprobe of it (was sort of a whirlwind tinkering session).

> You can always boot Mythbuntu from a USB stick and see what modules are
> loaded for your stick. My guess is at least three or four, possibly
> more.
>
> Once all modules are loaded your DVB node will become alive.
>
> The next problem is going to be userland, it is where USE flags come in
> play. However, if you emerge mythtv it should tell you if any flags
> need to be corrected. Just rebuilding your @world is probably in vain.

I discovered another, unrelated problem in trying to follow Hika's 
advice--having to do with a multilib conflict and my selected profile--but 
that's Gentoo-specific, so I won't go into it here. That issue is in the 
process of being corrected (hopefully) as I write this.

I actually previously booted another distro (Bodhi) and had this stick 
inserted at the time: I did make note of the modules it loaded for this 
device. I tried to compile all those into the kernel once I began my 
Gentoo installation, though some could only be compiled as modules. Just 
last night I began introducing some changes to loaded modules to see 
whether that will help: at least 3 additional modules related to the stick 
are now loading, but the DVB node still appears to be inactive. I should 
mention that, although it was clear that Bodhi was loading a few modules 
for this stick, I did not actually try using the stick from within Bodhi, 
so I'm not certain that all needed modules were being loaded under that 
OS.

I hope to be able to post a progress report as soon as my Gentoo issue 
gets sorted.