Re: Recent changes to ALSA for power saving
On Wed, May 27, 2009 at 08:03:48AM CEST, Alexandre Strube wrote: > On Tue, May 26, 2009 at 11:18 PM, Daniel Chen wrote: > > > > We expect there will be regressions in the form of audible pops when > > the AMPs power down (and/or up). If you experience this symptom in > > > > Continually lowering the volume for, say, one second prior to disabling > wouldn't mitigate this issue? This would have to be done at the driver level, and may not be feesable. Daniel may be able to give a better answer as to whether this is possible however. Luke -- 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
Re: Recent changes to ALSA for power saving
On Tue, May 26, 2009 at 11:18 PM, I wrote: >> We expect there will be regressions in the form of audible pops when >> the AMPs power down (and/or up). If you experience this symptom in On Wed, May 27, 2009 at 8:03 AM, Alexandre Strube wrote: > Continually lowering the volume for, say, one second prior to disabling > wouldn't mitigate this issue? That is a potential workaround, but the correct fix would be in linux's sound/pci/hda/*.c. Dan -- 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
Re: Recent changes to ALSA for power saving
On Tue, May 26, 2009 at 11:18 PM, Daniel Chen wrote: > We expect there will be regressions in the form of audible pops when > the AMPs power down (and/or up). If you experience this symptom in > Continually lowering the volume for, say, one second prior to disabling wouldn't mitigate this issue? -- [] Alexandre Strube su...@ubuntu.com -- 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
Recent changes to ALSA for power saving
Hi all, Luke and I have just pushed a one-line change to 9.10's /etc/modprobe.d/alsa-base.conf that enables HDA controllers to power down their amps after ten idle seconds. This change anticipates the larger power-savings objectives for 9.10. We expect there will be regressions in the form of audible pops when the AMPs power down (and/or up). If you experience this symptom in 9.10, please file a bug using "ubuntu-bug alsa-base". Be sure to change the summary of the bug afterward to "[9.10 regression] HDA power_save=10". Thanks, Dan -- 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
