Does either system have an encrypted home and/or swap? It sounds like the system may be going into hibernation or other S-state. Can you reproduce this issue then attach the output from:
cat /proc/acpi/wakeup If you dont mind, please also attach the files: /var/log/pm-suspend.log /var/log/syslog -- 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/1024491 Title: Centrino Advanced-N 6205 wifi doesn't resume (hard blocked) Status in “linux” package in Ubuntu: Triaged Bug description: Every day, when I wake up my ThinkPad x220 from sleep, its wifi doesn't come back. "rfkill list" shows: 1: phy0: Wireless LAN Soft blocked: no Hard blocked: yes and dmesg shows: [32330.371510] iwlwifi 0000:03:00.0: RF_KILL bit toggled to disable radio. toggling the hardware kill switch has no effect. Reloading the module doesn't resolve the problem. Suspending and resuming again doesn't resolve the problem. The only way I've found to get back online is to reboot. Oddly, I haven't been able to reproduce this by suspending and then resuming immediately. It seems to happen when the machine is left suspended for a period of time, like overnight. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-26-generic 3.2.0-26.41 ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19 Uname: Linux 3.2.0-26-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu8 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mdz 2236 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xf2620000 irq 52' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:14f1506e,17aa21da,00100000 HDA:80862805,80860101,00100000' Controls : 26 Simple ctrls : 8 Card29.Amixer.info: Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown' Mixer name : 'ThinkPad EC (unknown)' 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: Fri Jul 13 10:02:50 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) MachineType: LENOVO 4286CTO ProcEnviron: TERM=xterm LC_COLLATE=C PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/zsh ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-26-generic root=UUID=b4f82fbf-ca0b-4df1-86f6-2c4a94b99732 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.2.0-26-generic N/A linux-backports-modules-3.2.0-26-generic N/A linux-firmware 1.79 SourcePackage: linux StagingDrivers: mei UpgradeStatus: Upgraded to precise on 2012-03-14 (120 days ago) dmi.bios.date: 05/31/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8DET47WW (1.17 ) dmi.board.asset.tag: Not Available dmi.board.name: 4286CTO 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:bvr8DET47WW(1.17):bd05/31/2011:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4286CTO dmi.product.version: ThinkPad X220 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1024491/+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