[mythtv-users] 2005 laptop stutters after upgrade from 0.27 to 0.28

[faginbagin]

On 6/7/2017 10:46 AM, john.baab at gmail.com wrote:
> Nothing helpful to add for how to fix it, but I have been experiencing 
> stuttering on my ION remote frontends.  I get audio+video stuttering on 
> my ION and audio only on my ION 2.
> 
> I've ruled out all the tweaaks that have worked in the past; xorg config 
> tweaks, reducing the VDPAU playback profiles, and making sure audio 
> buffers are high enough.  Nothing in the logs to indicate an issue, I 
> may need to adjust logging levels.
> 
> I see this on both Mythbuntu upgrades and Xubuntu fresh install, I'm 
> running 17.04 on both with the latest MythTV packages from the Mythbuntu 
> PPA.

One thing I just remembered that might help is to double check how much 
memory is given to video in the BIOS. On my Acer Aspire Revo 3610, it's 
set under:
Advanced Chipset Features -> UMA Frame Buffer Size

The default setting is Auto, which for my system with 2GB translates to 
256MB. The max I can set it to is 512MB. It makes a difference playing 
HD video. A couple of years ago, the CMOS battery failed and whenever 
there was a power outage, I had trouble playing HD video until I went 
into the BIOS and fixed that setting. I finally took the machine apart, 
gave it a good cleaning and replaced the battery. It's been fine since.