** Tags removed: kernel-bug-exists-upstream-4.10 ** Tags added: kernel-bug-exists-upstream-4.11
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1504227 Title: Sound output starts several seconds late using DisplayPort with [AMD/ATI] Tahiti XT HDMI Audio [Radeon HD 7970 Series] [1002:aaa0] Status in linux package in Ubuntu: Triaged Bug description: I am using simultaneously : - an audio headset connected to the analog audio output, - a DisplayPort cable to connect my display to my 'AMD Tahiti XT [Radeon HD 7970 ...]' graphics + sound card. Using the 'Sound' panel of 'gnome-control-center', I systematically get following behaviour for sound output : - If I choose the 'Line Out - Built-in Audio' device, the sound output comes immediately : For example, inside the 'Test Speakers' window, the correct sound systematically starts as soon as I hit any 'Test' button (under 'Front Left' or 'Front Right'). - But if I choose the 'HDMI / DisplayPort - Tahiti XT HDMI Audio [Radeon HD 7970 Series]' device, the sound output starts several seconds LATE : For example, inside the 'Test Speakers' window, the sound starts at the end of the 2nd time I hit any 'Test' button (under 'Front Left' or 'Front Right'). Then continuous sound is correct and in sync. But after approx. 10s of silence (no sound to output), new sound output starts several seconds LATE again. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-14-generic 4.2.0-14.16 ProcVersionSignature: Ubuntu 4.2.0-14.16-generic 4.2.2 Uname: Linux 4.2.0-14-generic x86_64 ApportVersion: 2.19-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0c: z_admin 1665 F...m pulseaudio /dev/snd/controlC0: z_admin 1665 F.... pulseaudio /dev/snd/controlC1: z_admin 1665 F.... pulseaudio CurrentDesktop: GNOME Date: Thu Oct 8 17:46:05 2015 HibernationDevice: RESUME=UUID=ccecc437-66d2-4e39-ac56-76ab11e18140 InstallationDate: Installed on 2015-09-27 (10 days ago) InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20150924) IwConfig: enp2s0 no wireless extensions. lo no wireless extensions. MachineType: To be filled by O.E.M. To be filled by O.E.M. ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-14-generic root=UUID=a5c156d8-eac3-47fa-835c-b2c4ebda969d ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-14-generic N/A linux-backports-modules-4.2.0-14-generic N/A linux-firmware 1.149 RfKill: SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/07/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2501 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: M5A97 R2.0 dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2501:bd04/07/2014:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnM5A97R2.0:rvrRev1.xx:cvnToBeFilledByO.E.M.: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: To be filled by O.E.M. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1504227/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
