** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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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.
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