This change was made by a bot.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
--
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/1264346
Title:
machine very slow with ondemand governor
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
On my laptop with this CPU:
model name : Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz
I am using the ondemand governor:
$ cat /sys/devices/system/cpu/c*/cpufreq/scaling_governor
ondemand
ondemand
ondemand
ondemand
and the system is very slow to answer some inputs:
- the text output pauses for several seconds while I am typing this text
- trying to scroll a firefox window takes several seconds
- switching tabs in firefox takes several seconds
- ...
Setting the governor to "performance" fixes this problem.
Note that this bug does not reveal itself immediately after boot. It
takes a suspend/resume to show up.
ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-15-generic 3.11.0-15.23
ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: bonnaudl 2373 F.... pulseaudio
Date: Thu Dec 26 18:17:23 2013
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=cf81afe7-8427-45fa-9149-c11d060a5a26
InstallationDate: Installed on 2013-04-27 (243 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: Dell Inc. Latitude E6520
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic
root=UUID=749a9901-bdd3-4b5f-b80e-69414667e058 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.11.0-15-generic N/A
linux-backports-modules-3.11.0-15-generic N/A
linux-firmware 1.116
SourcePackage: linux
UpgradeStatus: Upgraded to saucy on 2013-10-01 (86 days ago)
dmi.bios.date: 02/28/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.name: 0NVF5K
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA12:bd02/28/2012:svnDellInc.:pnLatitudeE6520:pvr01:rvnDellInc.:rn0NVF5K:rvrA01:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6520
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1264346/+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
