When I suspend either of my two ThinkPad X220's under Xubuntu, they fail to properly wake up about 1 in 15-25 times. What happens is very strange though, and I believe that it sheds light on the problem, which I need some help deciphering:
When I open the lid after suspend and it fails to wake up, I get an LCD with a black screen (powered on, backlight on, but nothing displayed). However, the computer operates 100% normally. That is, I can type my password to unlock the screensaver that SHOULD be displayed, hit return, then start typing commands (I always have a Terminal open), and they happen! For example, I can type "sudo reboot" followed by my password, and the computer reboots! The machine also responds, for example, to SysRq + REISUB, or anything else that it would normally respond to. It'd just that there is no display at all...Just a black screen.
I'm on kernel 3.0.0-13
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AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu4
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
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xf2620000 irq 51'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:14f1506e,17aa21da,00100000 HDA:80862805,80860101,00100000'
Controls : 20
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 [off]
DistroRelease: Ubuntu 11.10
HibernationDevice: RESUME=UUID=57bb36d1-1e7f-4aed-90c3-066f0b05fed1
InstallationMedia: Xubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
MachineType: LENOVO 4286CTO
Package: linux (not installed)
ProcEnviron:
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-13-generic root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.0.0-13.22+mjgaspmfix-generic 3.0.6
RelatedPackageVersions:
linux-restricted-modules-3.0.0-13-generic N/A
linux-backports-modules-3.0.0-13-generic N/A
linux-firmware 1.60
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
StagingDrivers: mei
Tags: oneiric staging
Uname: Linux 3.0.0-13-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin audio cdrom dialout dip fax floppy fuse lpadmin netdev plugdev sambashare scanner tape vboxusers video
dmi.bios.date: 07/01/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET49WW (1.19 )
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:bvr8DET49WW(1.19):bd07/01/2011:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4286CTO
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO
There is an Ubuntuforums thread on this here: http://