You have been subscribed to a public bug: I noticed this after installing 20.04. At the beginning of new audio activity (playing video or generting system sounds eg. terminal bell) screen goes blank for few seconds.I can also reproduce it by opening settings in gnome and going to audio section.
The pulseadio in -vvv mode is attached around one of these events. This might not be entirely a pulseadio issue, so appreciate a pointer on how to narrow it down to the source of the issue. More info: $ lsb_release -rd Description: Ubuntu 20.04 LTS Release: 20.04 $ apt-cache policy pulseaudio pulseaudio: Installed: 1:13.99.1-1ubuntu3 Candidate: 1:13.99.1-1ubuntu3 Version table: *** 1:13.99.1-1ubuntu3 500 500 http://ca.archive.ubuntu.com/ubuntu focal/main amd64 Packages 100 /var/lib/dpkg/status -H --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: demystifier 4382 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-04-23 (7 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) Package: pulseaudio 1:13.99.1-1ubuntu3 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30 Tags: focal Uname: Linux 5.4.0-28-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 02/26/2020 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.0.7 dmi.board.name: 077Y9N dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.0.7:bd02/26/2020:svnDellInc.:pnXPS139300:pvr:rvnDellInc.:rn077Y9N:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9300 dmi.product.sku: 096D dmi.sys.vendor: Dell Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: apport-collected focal ice-lake-flicker -- [Ice Lake] screen goes blank for few seconds when there is new audio activity https://bugs.launchpad.net/bugs/1876228 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- 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
