[mythtv-users] Firewire channel changing and Switched Digital Video?

[Greg]

When Mythtv makes a channel change I can see the stb change channel's. 
The problem is if the channel is a switched digital video channel, I get 
a warning saying the channel isn't available or press "C" to continue.. 
I use firewire for changing channels (6200ch),it works great for 
that,but for some reason the channel won't switch on the video and I get 
a recording of Spectrum logo... It works fine for channels that aren't 
SDV...

Is there a solution for this? Is there someway to send a keep alive siginal?

Thanks,

        Greg

STB: Arris Dcx 3200-m

Mythtv .29 on Ubuntu 18.04