I've tried ubuntu 11.04 beta 2 and have problem with my notebook (lenovo y560) being overheated. When I boot 10.10, /proc/acpi/fan is present, but when I boot 11.04
>>> ls /proc/acpi/
gives
>>> ac_adapter battery button event wakeup
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xdd100000 irq 47'
Mixer name : 'Realtek ALC272'
Components : 'HDA:10ec0272,17aac004,00100001'
Controls : 24
Simple ctrls : 13
Card1.Amixer.info:
Card hw:1 'NVidia'/'HDA NVidia at 0xd3000000 irq 16'
Mixer name : 'Nvidia GPU 0a HDMI/DP'
Components : 'HDA:10de000a,10de0101,00100100'
Controls : 16
Simple ctrls : 4
DistroRelease: Ubuntu 11.04
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
MachineType: LENOVO 20035
Package: linux (not installed)
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- BOOT_IMAGE=/casper/vmlinuz
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Regression: Yes
RelatedPackageVersions:
linux-restricted-modules-2.6.38-8-generic N/A
linux-backports-modules-2.6.38-8-generic N/A
linux-firmware 1.50
Reproducible: Yes
Tags: natty kernel-config regression-release needs-upstream-testing
Uname: Linux 2.6.38-8-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 01/14/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 1ECN30WW(V5.04)
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: LENOVO
dmi.board.version: Base Board Version
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnLENOVO:bvr1ECN30WW(V5.04):bd01/14/2010:svnLENOVO:pn20035:pvrLenovoIdeaPadY550P:rvnLENOVO:rnBaseBoardProductName:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.name: 20035
dmi.product.version: Lenovo IdeaPad Y550P
dmi.sys.vendor: LENOVO
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