Dead or not, I have to go with what works...
Originally Posted by nickrout
I finally figured out, by playing around with "YUM", how to upgrade just MythTV without updating anything else like the kernel or other packages.
It then upgraded MythTV and all related programs. The kernel is still the older version. So what was the result? Yum upgraded Mythbackend to 0.24-2 fixes branch (from 0.23), and well, my PVR150's are still working. The ONLY change is that I have noticed some delays in getting video about 10% of the time, with a small amount of video artifacts on those few channel changes. The majority of the time I still get perfect video on any of my PVR150's, which is fine by me.
yum upgrade mythtv
I am not a programmer - this I have said many times, but I have done some assembler and a little C programming many years ago. With what I have done and experienced so far in all the iterations I have tried, I can't help but put out a theory, in the hopes that it will reach someone with the necessary skills to either confirm (and perhaps fix) or deny my hypothesis. So here goes...
I would say that the bugs being tracked on the MythTV site, particularly (click on the number to see bug) 9177, 9201, 9769, 9830, 9846, 10206, and 10244, are all due to a bug in the kernel, and that MythTV is showing different manifestations of the bug, depending on what tweaks to the MythTV code are done to squash this bug. My best guess is that it is in the IVTV driver or a related library, and has been there for years, and rears its head under the right conditions. The last statement is just based on the fact that I had a working system under Mythbuntu 8.10, and as soon as I loaded Mythbuntu 9.10 (and all after it) video from my PVR150's stopped working. Various things were done in MythTV to fix it, but nothing worked 100%.
However, as I said before, I haven't given up on Ubuntu or Mythbuntu, I will still be using Mythbuntu 11.04 for my other backend, and all my frontends. This will at least get me by until this is figured out by someone smarter than me. I am also hoping that the hang I get trying to boot my servers (P4 875 based boards) on 11.10 is also fixed - maybe Mythbuntu 12 will be worth the wait.
Any and all comments welcome.