you have to ask the graphic driver developer since the graphic driver have the abillity todisable hdmi audio when bandwidth is not enough
-- 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/1346490 Title: Only audio over HDMI in certain modes Status in “alsa-driver” package in Ubuntu: New Bug description: I've hooked up my computer (Ubuntu server 14.04 LTS) to my receiver which in turn is hooked up to my TV. The problem is that audio only works on certain modes. For instance, if I set the mode to 1080i60 using xrandr, audio works fine. The same goes for 1080p25. However, when I increase the framerate on the progressive scans on the 1920x1080 resolution the audio switches off. E.g. 1080p60 (the preferred mode) shows the video just fine, but there's no audio. When the computer is directly connected to the TV I'm able to play audio despite using the preferred 1080p60 mode on the built-in TV speakers. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4 Uname: Linux 3.13.0-32-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: dennis 2606 F.... pulseaudio CurrentDesktop: Unity Date: Mon Jul 21 21:10:27 2014 InstallationDate: Installed on 2013-01-10 (556 days ago) InstallationMedia: Ubuntu-Server 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120817.3) 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: [To be filled by O.E.M., Intel PantherPoint HDMI, Digital Out, HDMI] Playback problem UpgradeStatus: Upgraded to trusty on 2014-07-21 (0 days ago) dmi.bios.date: 03/23/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F4 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: B75M-D3H dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF4:bd03/23/2012:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnB75M-D3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1346490/+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
