On Tue, 15 Mar 2016 20:38:41 +0100, Takashi Iwai wrote: > > On Tue, 15 Mar 2016 20:23:09 +0100, > Laura Abbott wrote: > > > > Hi, > > > > We received a bug report https://bugzilla.redhat.com/show_bug.cgi?id=1316119 > > that the headphone jack on a MacPro6,1 stopped working on an upgrade from 4.3 > > to 4.4. > > > > The bugzilla has the alsainfo, diffing shows that the Amp-Out vals are > > different. I tried a revert of 9f660a1c4 (" ALSA: hda/realtek - Fix silent > > headphone output on MacPro 4,1 (v2)") but that didn't help. > > > > Any ideas before asking for a bisect? Does this hardware version need to have > > the vref fixup as well? > > The obvious difference is the power state of each node. The recent > kernel has the finer power saving mode, and this might be the cause -- > Mac has some secret that requires some node to be powered up. > > Try to power on each node via hda-verb. For example, to power up the > node 0x05, run like: > hda-verb /dev/snd/hwC0D0 0x05 SET_POWER 0x01 Oops, a typo: the last argument must be 0x00, corresponding to D0: hda-verb /dev/snd/hwC0D0 0x05 SET_POWER 0x00 Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
