Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.6 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc6-wily/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1573864 Title: "HDMI: invalid ELD buf size -1" after connecting external display Status in linux package in Ubuntu: Incomplete Bug description: dmesg shows a lot of repated "snd_hda_codec_hdmi hdaudioC0D2: HDMI: invalid ELD buf size -1" errors after connecting external UHD display over USB Type-C. Sound played over the display's speaker works fine non-the-less. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-21-generic 4.4.0-21.37 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: cromo 2664 F.... pulseaudio /dev/snd/controlC0: cromo 2664 F.... pulseaudio CurrentDesktop: Unity Date: Fri Apr 22 20:59:48 2016 HibernationDevice: RESUME=UUID=3cd6beac-9b2b-4af8-9004-fdec2b01f2df InstallationDate: Installed on 2013-04-24 (1094 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1) MachineType: Dell Inc. XPS 13 9350 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=50ed3eed-05f6-4dce-b5d6-86a6519d89c1 ro quiet splash i8042.nopnp vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-21-generic N/A linux-backports-modules-4.4.0-21-generic N/A linux-firmware 1.157 SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-03-23 (30 days ago) dmi.bios.date: 01/08/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.2.3 dmi.board.name: 0VM5NC dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.2.3:bd01/08/2016:svnDellInc.:pnXPS139350:pvr:rvnDellInc.:rn0VM5NC:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: XPS 13 9350 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1573864/+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
