Verified with Linux E6400 4.12.0-041200rc1-generic #201705131731 SMP Sat May 13 21:32:36 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
powertop show Audio codec hwC0D2: Intel, hwC0D1: Conexant and hwC0D0: IDT at 100% -- 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/1690357 Title: Computer very slow since update to Ubuntu 17.04 Status in linux package in Ubuntu: Confirmed Bug description: After upgrading my Dell Latitude E6400, computer was running very slowly. After few search, with powertop, I found that three modules was consuming lot of CPU: - snd_hda_codec_idt - snd_hda_codec_generic - snd_hda_intel (like https://askubuntu.com/questions/91359/100-0-usage-by-audio-codec-hwc0d0-realtek) After adding them in /etc/modprobe.d/blacklist-snd.conf, my computer works again like a charm, with cost of missing sound. Ubuntu 4.10.0-20.22-generic 4.10.8 --- ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: XFCE DistroRelease: Ubuntu 17.04 HibernationDevice: RESUME=UUID=0ae2ebf0-deb2-41a5-9097-993b2b8ae91c InstallationDate: Installed on 2016-03-03 (435 days ago) InstallationMedia: Xubuntu Core 15.04 - amd64 - 20150425 MachineType: Dell Inc. Latitude E6400 Package: linux (not installed) PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20-generic root=UUID=bbcbd90b-01c5-4ac8-8b33-bdfef07019fc ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8 RelatedPackageVersions: linux-restricted-modules-4.10.0-20-generic N/A linux-backports-modules-4.10.0-20-generic N/A linux-firmware 1.164.1 Tags: zesty Uname: Linux 4.10.0-20-generic x86_64 UpgradeStatus: Upgraded to zesty on 2017-05-02 (10 days ago) UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo wireshark _MarkForUpload: True dmi.bios.date: 12/21/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: A20 dmi.board.name: 0W620R dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA20:bd12/21/2009:svnDellInc.:pnLatitudeE6400:pvr:rvnDellInc.:rn0W620R:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Latitude E6400 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1690357/+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
