core i7 i5 (Lynnfield) turbo boost not working
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linux |
Fix Released
|
Medium
|
|||
linux (Ubuntu) |
Invalid
|
Medium
|
Unassigned | ||
Bug Description
According to http://
Intel core i7 and i5 (Lynnfield) processors do not work well with ubuntu (both Ubuntu 9.04 and Ubuntu 9.10 Alpha 5).
In detail, turbo boost does not work and occasionally creates performance problems.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
/dev/snd/
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfbff8000 irq 55'
Mixer name : 'Realtek ALC889'
Components : 'HDA:10ec0889,
Controls : 48
Simple ctrls : 22
Card1.Amixer.info:
Card hw:1 'U0x46d0x825'/'USB Device 0x46d:0x825 at usb-0000:00:1a.7-6, high speed'
Mixer name : 'USB Mixer'
Components : 'USB046d:0825'
Controls : 2
Simple ctrls : 1
Card1.Amixer.
Simple mixer control 'Mic',0
Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
Capture channels: Mono
Limits: Capture 0 - 6144
Mono: Capture 6144 [100%] [30.00dB] [off]
Card2.Amixer.info:
Card hw:2 'Generic'/'HD-Audio Generic at 0xfbafc000 irq 56'
Mixer name : 'ATI R6xx HDMI'
Components : 'HDA:1002aa01,
Controls : 6
Simple ctrls : 1
Card2.Amixer.
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
DistroRelease: Ubuntu 12.04
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. P55A-UD4
NonfreeKernelMo
Package: linux (not installed)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
RelatedPackageV
linux-
linux-
linux-firmware 1.79
RfKill:
Tags: precise running-unity
Uname: Linux 3.2.0-29-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 09/16/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F15
dmi.board.name: P55A-UD4
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSof
dmi.product.name: P55A-UD4
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
description: | updated |
description: | updated |
affects: | ubuntu → linux (Ubuntu) |
Changed in linux (Ubuntu): | |
assignee: | nobody → Ubuntu Kernel ACPI Team (ubuntu-kernel-acpi) |
status: | New → Confirmed |
Changed in linux: | |
status: | Unknown → Fix Released |
Changed in linux: | |
importance: | Unknown → Medium |
Changed in linux (Ubuntu): | |
status: | Incomplete → Invalid |
The i5 support seems to be a little behind, even on the latest from Koala beta (which I went for having seen the same Phoronix article explaining that the 2.6.31 Kernel was required for compatibility).
In addition to the Turbo Boosting not working, I have also found performance to be on par or below that of a Core2Duo chip of similar Ghz, lm_sensors unable to detect/monitor the chip, and issues with the CPU scaling defaulting to a maximum (https:/ /bugs.launchpad .net/ubuntu/ +bug/436356 and https:/ /bugs.launchpad .net/ubuntu/ +bug/359559).
Given the popularity of these processors, I'd hoped that these things would be ironed out for the Koala release.
If I can supply any further information, please let me know.
MG