Good news! A very smart Arch user by the name of ronincoder discovered a fix for the headphone jack. I worked with ronincoder to make a kernel patch [1] and our patch made it into the 5.7 kernel release! It was also applied to the 5.4 LTS kernel. I booted both 5.7.2 and 5.4.46 and the headphone jack audio is loud and clear. :)
Does it work for you? It should if you have a Samsung Notebook 9 Pro NP930SBE-K01US or NP930MBE-K04US (ronincoder's is the former, mine is the latter). You can check your laptop model by running alsa_info.sh and looking at "Board Name". The Realtek ALC298 codec in the NP930SBE-K01US and NP930MBE-K04US identifies itself with "Subsystem Id" 0x144dc169 and 0x144dc176, respectively. If snd_hda_intel sees either of these ids it implements the fix. What about the speakers? I reported the no-sound-on-internal-speakers issue on the kernel bugzilla [2]. Linux sound maintainer Jaroslav Kysela speculates that there may be some amplifiers connected to the HDA codec which are not initialized by the BIOS, and are thus not active in Linux. He suggests dumping the codec communication for the Windows driver using QEMU. We could then parse the dump and replay the communication in Linux using Early Patching [3] or writing another kernel patch. It's been a month since Jaroslav made this suggestion and I've made some progress but I still don't have a good dump. Please join the discussion on the kernel bugzilla if you'd like to help me. ^^ [1] For reference, our patch made it into Linus' tree as commit 14425f1f521f (ALSA: hda/realtek: Add quirk for Samsung Notebook). [2] https://bugzilla.kernel.org/show_bug.cgi?id=207423 [3] https://www.kernel.org/doc/html/v4.17/sound/hd-audio/notes.html#early-patching -- 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/1834566 Title: Samsung Notebook 9 Pro - Internal Speaker Playback problem - HDA Intel - Realtek ALC298 Status in alsa-driver package in Ubuntu: Confirmed Bug description: Unable to get system speakers working running 19.04. At max volume, sound is barely perceptible through headphones. Pavucontrol shows sounds is present, but no amount of adjustments makes a difference. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 5.0.0-20.21-generic 5.0.8 Uname: Linux 5.0.0-20-generic x86_64 ApportVersion: 2.20.10-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: robert 3355 F.... pulseaudio CurrentDesktop: KDE Date: Fri Jun 28 00:44:13 2019 InstallationDate: Installed on 2019-06-05 (22 days ago) InstallationMedia: Kubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Digital Out, HDMI Symptom_Type: None of the above Title: [930MBE, Intel Kabylake HDMI, Digital Out, HDMI] Playback problem UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/25/2019 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P02AHK.029.190425.PS dmi.board.asset.tag: No Asset Tag dmi.board.name: NP930MBE-K04US dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: SGL9872A0S-C01-G001-S0001+10.0.17763 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 31 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP02AHK.029.190425.PS:bd04/25/2019:svnSAMSUNGELECTRONICSCO.,LTD.:pn930MBE:pvrP02AHK:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP930MBE-K04US:rvrSGL9872A0S-C01-G001-S0001+10.0.17763:cvnSAMSUNGELECTRONICSCO.,LTD.:ct31:cvrN/A: dmi.product.family: Notebook 9 Series dmi.product.name: 930MBE dmi.product.sku: SCAI-A5A5-A5A5-A5A5-PAHK dmi.product.version: P02AHK dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1834566/+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
