Thank you for your reply, Please see below the output of alsa-info.sh before and after the headphone plugged in Before: http://www.alsa-project.org/db/?f=a316eebf7b150b5897838be37bce4e8c9d95eaae After: http://www.alsa-project.org/db/?f=0f163003e9005972db5f97f21a45be67816e3801 I have 6 Jacks at the rear panel and two at the top (one output one input) I am afraid I do not know how to switch channel mode to retask. Also, the computer is of a certain age, and the issue has started several month ago but I never really looked into it, so I am not sure that change in power management will be relevant has it seems quite recent. Looking forward for your reply, On 30/03/15 06:23, Raymond Yau wrote: > > > > > First some details: > > I have an VT1708S sound card with a rear panel and and top/front > panel My Speakers are plugged on the rear panel corresponding to the > "surround" channel on alsamixer. While I always have my headset > plugged in on the top panel. > > > > This is not user specific but system wide. > > > > Now the issue; > > The Surround channel is always muted when PulseAudio starts, doesn't > mater if the headset are plugged in or not. I have used alsamixer to > unmute and run "sudo alsa-store" but it hasn't worked > > I also tried to stop PulseAudio Daemon that restore the mixer's > level but it hasn't work. > > This issue has started months ago, but never got around to sort it > before. > > > > You have to post output of alsa-info.sh before and after you plugged > the headphone > > How many audio jacks in rear panel, you need to switch channel mode to > retask the input jacks as output if you want suuround40 or surround51 > > The recent change in power management or hardware fault in your front > audio panel jack detection may affect rear panel > > https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda/patch_via.c?id=688b12cc3ca8a5155b95ce8d01e0e43006813b27 > > > > _______________________________________________ > pulseaudio-discuss mailing list > pulseaudio-discuss at lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20150330/72acf983/attachment.html>
