Software rendering not giving any audio or video output

I’ve been using Kodi (or XBMC as it was then) since it was on the original xbox so firstly thanks for the excellent software you guys have been providing for years. Recently I’ve been running it on a Windows machine, but it’s the only windows device in the house (everything else is FreeBSD, OSX or Linux) so I’m moving it over to a Linux PC as I find maintaining windows hard work.

Everything seems to be working apart from software rendering. I tried playing a Hi10p file and got no audio or video output, just a black screen. Hitting O brought up stats, and I could pause playback, so Kodi hadn’t hung, just no output. I’m on an old Radeon HD 6450 so I understood it’s not going to be decoded in HW, but I’d expect a stuttering playback if it was the CPU being underpowered to do the SW decoding. As a test I turned off VDPAU HW acceleration and tried playing a file that worked with it enabled (i.e. one that was supported by HW acceleration) and got the same result, no audio or video, so it looks like software rendering is dead for some reason.

I’m running Kodi 17-rc2 on Ubuntu 16.04.1 and the graphics card is the aforementioned Radeon HD 6450. I’ve uploaded a debug log to pastebin for the playback of the Hi10p file. I can add another debug log for the none Hi10p file if that would be useful and let me know if I can provide any more information on hardware setup, installed packages, package versions, etc.

Thanks for any help you can provide!