I hate to say this.. but "It works in Windows" (dual boot but nearly empty on Windows). Perhaps this is useful even though you do not like this phrase.
The Acer website has a 250 megabite Realtek driver for windows. I have it downloaded but have not done anything with it. I am not sure if that will help. When I query my snd card it says Intel but I know it is Realtek. The hdmi is intel bhikkhusubhuti@Subhuntu:~$ lspci -v | grep -A7 -i "audio" 00:1b.0 Audio device: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series High Definition Audio Controller (rev 21) Subsystem: Acer Incorporated [ALI] Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series High Definition Audio Controller Flags: bus master, fast devsel, latency 0, IRQ 311 Memory at 91410000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel 00:1c.0 PCI bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Express Port #1 (rev 21) (prog-if 00 [Normal decode]) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1650281 Title: External Microphone of headset not working when plugged in Status in alsa-driver package in Ubuntu: New Bug description: bhikkhusubhuti@Subhuntu:~$ lsb_release -rd Description: Ubuntu 16.10 Release: 16.10 bhikkhusubhuti@Subhuntu:~$ apt-cache policy alsa-base alsa-base: Installed: 1.0.25+dfsg-0ubuntu5 Candidate: 1.0.25+dfsg-0ubuntu5 Version table: *** 1.0.25+dfsg-0ubuntu5 500 500 http://archive.ubuntu.com/ubuntu yakkety/main amd64 Packages 500 http://archive.ubuntu.com/ubuntu yakkety/main i386 Packages 100 /var/lib/dpkg/status What I EXPECT: I plug in a working headset. The internal mic should be muted and speakers muted. The headset and mic should work . WHAT HAPPENS: The headphones work but the microphone does not work. The internal microphone (which gives me static)... still works even though it should be muted. (another problem? I have static in my internal microphone and therefore try to fix this with an external plug in mic) Perhaps there is a quick fix for hdajackretask advanced mode. I tried setting pins 18 and 19 like the youtube video but nothing worked. I can mute the internal mic through this program though. Pulse Audio has been modified to not do autostart and I start it manually (to make hdajackretask allow changes. Yes I start it and the bug still exists.. (it existed before I modified it to not repeatedly autoload). Note: Without pulseaudio, I have no sound devices listed (this is new to me) maybe a gnome thing which I am new to from lubuntu and mate previously. I tried irc #ubuntu and installed pulse volume control.. nope I tried ask ubuntu. lanchpad.net had outdated stuff that I am not clear on. My computer is Acer c1yf. Previously I opted for a shared bug report, but noticed it is different and something could be fixed through alsamixer. I was not able to get it to work nor understood what he did anyway. I played with Gnome alsa mixer, hdaJackretast (as youtube video says) and even the conf file but could not get anything to work. I am on the mainline build 4.9 and latest 1.15 BIOS for acer 131t r3 downlaoded a few days ago (which caused me boot problems to fix). I am up to speed to qualify for investigation so I wish some help. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: alsa-base 1.0.25+dfsg-0ubuntu5 Uname: Linux 4.9.0-040900-generic x86_64 ApportVersion: 2.20.3-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: bhikkhusubhuti 6668 F.... pulseaudio CurrentDesktop: GNOME Date: Thu Dec 15 20:09:07 2016 EcryptfsInUse: Yes InstallationDate: Installed on 2016-11-05 (40 days ago) InstallationMedia: Ubuntu-GNOME 16.10 "Yakkety Yak" - Release amd64 (20161012.1) PackageArchitecture: all SourcePackage: alsa-driver UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/04/2016 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V1.15 dmi.board.asset.tag: No Asset Tag dmi.board.name: Aspire R3-131T dmi.board.vendor: Acer dmi.board.version: V1.15 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.15 dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.15:bd07/04/2016:svnAcer:pnAspireR3-131T:pvrV1.15:rvnAcer:rnAspireR3-131T:rvrV1.15:cvnAcer:ct10:cvrV1.15: dmi.product.name: Aspire R3-131T dmi.product.version: V1.15 dmi.sys.vendor: Acer mtime.conffile..etc.modprobe.d.alsa-base.conf: 2016-12-14T15:49:54.217020 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1650281/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp