I am having an unusual problem here. Ever since I upgraded to 12.04 my wireless connection seems to randomly drop from time to time. Re-connecting to it in NetworkManager solves it until the next time it drops.
I saw from https://bugs.launchpad.net/ubuntu/+source/linux/+bug/548992 that this could be due to power management issues, so I added 'wireless-power off' to /etc/network/interfaces and iwconfig tells me 'Power Management:off' but I am still getting the same problem.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-7-generic-pae 3.2.0-7.13
ProcVersionSignature: Ubuntu 3.2.0-7.13-generic-pae 3.2.0-rc7
Uname: Linux 3.2.0-7-generic-pae i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
ApportVersion: 1.90-0ubuntu1
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: jono 1545 F.... pulseaudio
/dev/snd/controlC0: jono 1545 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfc020000 irq 49'
Mixer name : 'Conexant CX20561 (Hermosa)'
Components : 'HDA:14f15051,17aa211c,00100000'
Controls : 13
Simple ctrls : 12
Card1.Amixer.info:
Card hw:1 'U0x46d0x825'/'USB Device 0x46d:0x825 at usb-0000:00:1d.7-2.3, high speed'
Mixer name : 'USB Mixer'
Components : 'USB046d:0825'
Controls : 2
Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'Mic',0
Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
Capture channels: Mono
Limits: Capture 0 - 6144
Mono: Capture 4608 [75%] [24.00dB] [on]
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7VHT16WW-1.06'
Mixer name : 'ThinkPad EC 7VHT16WW-1.06'
Components : ''
Controls : 1
Simple ctrls : 1
Card29.Amixer.values:
Simple mixer control 'Console',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Mon Jan 2 17:05:43 2012
HibernationDevice: RESUME=UUID=d4956f74-d9ca-40be-958a-44a5e9ad75d2
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120102)
MachineType: LENOVO 7417CTO
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-7-generic-pae root=UUID=312c6990-bc81-4ca1-926b-fd503b7a19dd ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-7-generic-pae N/A
linux-backports-modules-3.2.0-7-generic-pae N/A
linux-firmware 1.67
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/26/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7UET81WW (3.11 )
dmi.board.name: 7417CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7UET81WW(3.11):bd11/26/2009:svnLENOVO:pn7417CTO:pvrThinkPadT400:rvnLENOVO:rn7417CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 7417CTO
dmi.product.version: ThinkPad T400
dmi.sys.vendor: LENOVO
Hi Jono,
Would it be possible for you to test the latest upstream kernel? Refer to https:/ /wiki.ubuntu. com/KernelMainl ineBuilds .
The latest mainline kernel can be found at: kernel. ubuntu. com/~kernel- ppa/mainline/ v3.2-rc7- precise/
http://