-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wed, 6 May 2009, Vishal Rao wrote:
> Is there going to be discussion during UDS amongst yourselves (devs) about > enabling low-latency for Karmic as well? Yes. > See this mailing list post by Lennart of PulseAudio/Fedora fame: > https://tango.0pointer.de/pipermail/pulseaudio-discuss/2009-February/003150.html One thing to keep in mind (that I've raised to other developers) is that Ubuntu tends to release with slightly older versions of software in the audio stack. This tends to complicate development and troubleshooting of audio problems. FeatureFreeze has been early enough to prevent updating ALSA (think kernelspace and userspace sync) and PulseAudio, both of which contribute quite heavily to user experience. For Hardy, this was a significant problem. New versions of ALSA necessary for improved PulseAudio integration were released immediately after 8.04 released. The best that could have been done would have been to configure PulseAudio to use dmix and dsnoop devices to work around the massive breakage that ensued. Of course that approach runs afoul of Lennart's strident recommendations that only hw be used. For Jaunty, we again encountered the situation where significant linux patches were necessary to prevent disastrous regressions from Intrepid's user experience, and of course these patches were developed and tested extremely late in the 9.04 cycle. Testing and tweaking of these fixes is ongoing (see the linux SRU), with many indications that all levels of the stack need to be realigned to resolve PulseAudio's behaviour. (It's worth noting that several pieces need to be aligned in Karmic: linux; - needs to remain synced with alsa-lib; alsa-plugins; pulseaudio) The Karmic development schedule has some points at which these syncs can be evaluated, and hopefully 9.10 will have the necessary pieces in place. Once there are devoted developers for these tasks, the user experience should improve noticeably. Dan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iD8DBQFKARzte9GwFciKvaMRAlv+AJ4hXzSOLBvEZPdp0bQ+ylQjK/cLHACbBx0i xjmZAWphkr2N+fcNweiUCU8= =b73s -----END PGP SIGNATURE----- -- Ubuntu-devel-discuss mailing list Ubuntu-devel-discuss@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss
