Public bug reported: Hi.
I'm running Ubuntu MATE 16.04 running kernel `4.4.0-128-generic`. Since applying updates this morning I'm now unable to shut my machine down cleanly. If I shut down or restart, the error `snd_hda_codec_realtek hdaudioC0D0: unable to sync register` is output 3 times and the machine doesn't power down. I have to finish the shutdown manually by holding the power button. Wasn't sure which debug steps to follow for this error, but this is the corresponding extract from `/var/log/kern.log`: ``` Jun 22 21:14:04 leonard kernel: [ 37.378508] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register 0x2f0d00. -5 Jun 22 21:14:04 leonard kernel: [ 37.378876] snd_hda_codec_hdmi hdaudioC0D2: HDMI: invalid ELD buf size -1 Jun 22 21:14:04 leonard kernel: [ 37.379239] snd_hda_codec_hdmi hdaudioC0D2: HDMI: invalid ELD buf size -1 Jun 22 21:14:04 leonard kernel: [ 37.379602] snd_hda_codec_hdmi hdaudioC0D2: HDMI: invalid ELD buf size -1 Jun 22 21:14:04 leonard kernel: [ 37.405753] snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5 Jun 22 21:14:04 leonard kernel: [ 37.405873] snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5 Jun 22 21:14:04 leonard NetworkManager[904]: <info> [1529698444.9269] ModemManager disappeared from bus ``` I made the report using `ubuntu-bug linux` so hopefully this will provide the necessary debug info. If I need to post more info, let me know what you need. Thanks ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-128-generic 4.4.0-128.154 ProcVersionSignature: Ubuntu 4.4.0-128.154-generic 4.4.131 Uname: Linux 4.4.0-128-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chris 1660 F.... pulseaudio CurrentDesktop: MATE Date: Fri Jun 22 21:19:43 2018 HibernationDevice: RESUME=UUID=6bc8046c-253e-4b27-bb37-27d8e02c255d InstallationDate: Installed on 2017-01-25 (513 days ago) InstallationMedia: Ubuntu-MATE 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 5986:1112 Acer, Inc Bus 001 Device 002: ID 8087:0a2b Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Notebook N24_25BU ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-128-generic.efi.signed root=UUID=f03f5e5c-4a97-462b-8e17-63e66a434dc9 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-128-generic N/A linux-backports-modules-4.4.0-128-generic N/A linux-firmware 1.157.19 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/01/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 5.12 dmi.board.asset.tag: Tag 12345 dmi.board.name: N24_25BU dmi.board.vendor: Notebook dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Notebook dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.12:bd12/01/2016:svnNotebook:pnN24_25BU:pvrNotApplicable:rvnNotebook:rnN24_25BU:rvrNotApplicable:cvnNotebook:ct10:cvrN/A: dmi.product.name: N24_25BU dmi.product.version: Not Applicable dmi.sys.vendor: Notebook ** Affects: linux (Ubuntu) Importance: Undecided Status: Confirmed ** Tags: amd64 apport-bug xenial -- 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/1778274 Title: snd_hda_codec_realtek hdaudioC0D0: Unable to sync register Status in linux package in Ubuntu: Confirmed Bug description: Hi. I'm running Ubuntu MATE 16.04 running kernel `4.4.0-128-generic`. Since applying updates this morning I'm now unable to shut my machine down cleanly. If I shut down or restart, the error `snd_hda_codec_realtek hdaudioC0D0: unable to sync register` is output 3 times and the machine doesn't power down. I have to finish the shutdown manually by holding the power button. Wasn't sure which debug steps to follow for this error, but this is the corresponding extract from `/var/log/kern.log`: ``` Jun 22 21:14:04 leonard kernel: [ 37.378508] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register 0x2f0d00. -5 Jun 22 21:14:04 leonard kernel: [ 37.378876] snd_hda_codec_hdmi hdaudioC0D2: HDMI: invalid ELD buf size -1 Jun 22 21:14:04 leonard kernel: [ 37.379239] snd_hda_codec_hdmi hdaudioC0D2: HDMI: invalid ELD buf size -1 Jun 22 21:14:04 leonard kernel: [ 37.379602] snd_hda_codec_hdmi hdaudioC0D2: HDMI: invalid ELD buf size -1 Jun 22 21:14:04 leonard kernel: [ 37.405753] snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5 Jun 22 21:14:04 leonard kernel: [ 37.405873] snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5 Jun 22 21:14:04 leonard NetworkManager[904]: <info> [1529698444.9269] ModemManager disappeared from bus ``` I made the report using `ubuntu-bug linux` so hopefully this will provide the necessary debug info. If I need to post more info, let me know what you need. Thanks ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-128-generic 4.4.0-128.154 ProcVersionSignature: Ubuntu 4.4.0-128.154-generic 4.4.131 Uname: Linux 4.4.0-128-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chris 1660 F.... pulseaudio CurrentDesktop: MATE Date: Fri Jun 22 21:19:43 2018 HibernationDevice: RESUME=UUID=6bc8046c-253e-4b27-bb37-27d8e02c255d InstallationDate: Installed on 2017-01-25 (513 days ago) InstallationMedia: Ubuntu-MATE 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 5986:1112 Acer, Inc Bus 001 Device 002: ID 8087:0a2b Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Notebook N24_25BU ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-128-generic.efi.signed root=UUID=f03f5e5c-4a97-462b-8e17-63e66a434dc9 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-128-generic N/A linux-backports-modules-4.4.0-128-generic N/A linux-firmware 1.157.19 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/01/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 5.12 dmi.board.asset.tag: Tag 12345 dmi.board.name: N24_25BU dmi.board.vendor: Notebook dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Notebook dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.12:bd12/01/2016:svnNotebook:pnN24_25BU:pvrNotApplicable:rvnNotebook:rnN24_25BU:rvrNotApplicable:cvnNotebook:ct10:cvrN/A: dmi.product.name: N24_25BU dmi.product.version: Not Applicable dmi.sys.vendor: Notebook To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1778274/+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