Created attachment 39217 [details] glxinfo KMS Driver Stack details : ========================= 1) Kernel-2.6.32-21-generic-pae 2) Libdrm-2.4.19 3) Mesa-7.8 4) Xorg-server-1.7.4 5) ddx: xf86-video-ati-6.13.0 System Environment : =================== O.S. - Ubuntu-10.04(32 bit) Asic - M97 Mobility RadeonHD 4830 CPU - AMD Athlon(tm) 64 FX-60 Dual Core Processor@2.60 GHz Steps to Reproduce: =================== 1) Launch firefox and run Youtube HD stream using link below http://www.youtube.com/watch?v=hbLgszfXTAY 2) Select the resolution 720p 3) Let the stream buffer completely and playback Expected : The video plays without incident such as frozen and corruption. -------------- Observation : Video playback not smooth and exhibits stuttering at 720p while running Youtube HD stream
Created attachment 39219 [details] [review] Xorg.log
Created attachment 39220 [details] xorg.conf
Do things improve any with xf86-video-ati 6.13.2? Also what are you using to view the videos? Adobe's flash player? html5 video embed? gnash?
(In reply to comment #3) > Do things improve any with xf86-video-ati 6.13.2? Also what are you using to > view the videos? Adobe's flash player? html5 video embed? gnash? 1) Yes The Adobe flash player is used for viewing . 2) Please suggest whether Youtube on Linux is using UVD by design or not. 3) Since UVD is not implemented yet in driver , does the playing the HD stream with hardware accelearation enabled in You Tube window impacts the performance and buffering time.
(In reply to comment #4) > 1) Yes The Adobe flash player is used for viewing . > 2) Please suggest whether Youtube on Linux is using UVD by design or not. > 3) Since UVD is not implemented yet in driver , does the playing the HD stream > with hardware accelearation enabled in You Tube window impacts the performance > and buffering time. The open driver does not support UVD at this time, and adobe flash does not use any acceleration support provided by the open driver at this time.
You can try to add OverrideGPUValidation=true to /etc/adobe/mms.cfg ( http://blogs.adobe.com/penguinswf/2008/08/secrets_of_the_mmscfg_file_1.html )
(In reply to comment #5) > (In reply to comment #4) > > 1) Yes The Adobe flash player is used for viewing . > > 2) Please suggest whether Youtube on Linux is using UVD by design or not. > > 3) Since UVD is not implemented yet in driver , does the playing the HD stream > > with hardware accelearation enabled in You Tube window impacts the performance > > and buffering time. > The open driver does not support UVD at this time, and adobe flash does not use > any acceleration support provided by the open driver at this time. Resolved : fixed with the latest build
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