It’s pretty ironic that I maintain a guide on how easy it is to get MythTV working on Ubuntu, but when I upgraded my own MythTV box from Dapper to Edgy I completely broke it. I can sum the problems up in just two words: bloody ATI.
It’s a well known fact that ATI cards have flaky Linux support, but my Radeon 9250 has served me pretty well… until now. It turns out that by adding Xorg 7.1 support (required for Edgy) to driver 8.27, ATI broke their VideoOverlay feature. This means that you can only see the top half of the picture, no matter what resolution you use. Without VideoOverlay, the picture suffers from horrible tearing.
Anyway, a bit of googling and I learned that the problem was already fixed in version 8.30 of the driver. Great, I thought, and promptly installed the latest version. To my horror, it turns out that ATI dropped support for my 9250 card in version 8.29!
So, I did what I should have done long ago – sent off for an Nvidia 5200. Thanks to the wonders of http://www.dabs.com/, I had it in my grubby mitts just 10 hours later (standard delivery!). Within 10 minutes of sticking it into my PC, I had a great picture on my TV.
The moral? Linux and ATI – just don’t do it.