The machine goes into suspend but can't wake up from it. When inspecting /var/log/kern.log afterwards, no suspend-related messages are added to it at that time, while on my Dell Latitude E6400 which has working suspend there are. On the E6400 the first line that would show up is "PM: Syncing filesystems ... ", which is from the enter_state function in kernel/power/suspend.c . I added some print statements in that code to see if the M101z got near that point, and it does indeed enter the function, but acquiring a mutex seems to fail:
int enter_state(suspend_state_t state)
{
int error;
if (!valid_state(state))
return -ENODEV;
if (!mutex_trylock(&pm_mutex))
return -EBUSY;
printk(KERN_INFO "PM: Syncing filesystems ... ");
On the M101z the function returns after mutex_trylock, while on the E6400 it carries on.
I then found out about the s2ram instructions at http://en.opensuse.org/SDB:Suspend_to_RAM and found that suspend works when I pass the noapic boot option to the kernel. Locking the mutex succeeds in that case.
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-22-generic 2.6.35-22.35
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
NonfreeKernelModules: fglrx wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: ALC259 Analog [ALC259 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: raf 1708 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'SB'/'HDA ATI SB at 0xd0400000 irq 16'
Mixer name : 'Realtek ALC259'
Components : 'HDA:10ec0269,10280470,00100100'
Controls : 13
Simple ctrls : 8
Card1.Amixer.info:
Card hw:1 'HDMI'/'HDA ATI HDMI at 0xd0110000 irq 43'
Mixer name : 'ATI RS690/780 HDMI'
Components : 'HDA:1002791a,00791a00,00100000'
Controls : 4
Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Sat Nov 13 20:33:13 2010
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=8a09427d-f838-4dca-ad36-0f46eee42216
InstallationMedia: Ubuntu-Netbook 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: Dell Inc. Inspiron 1120
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=f9223b5e-ef82-433f-a550-f08dbadb24de ro crashkernel=384M-2G:64M,2G-:128M quiet splash
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
SourcePackage: linux
dmi.bios.date: 07/26/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A03
dmi.board.asset.tag: 1234567890
dmi.board.name: 090DNY
dmi.board.vendor: Dell Inc.
dmi.board.version: A03
dmi.chassis.asset.tag: 1234567890
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A03
dmi.modalias: dmi:bvnDellInc.:bvrA03:bd07/26/2010:svnDellInc.:pnInspiron1120:pvrA03:rvnDellInc.:rn090DNY:rvrA03:cvnDellInc.:ct8:cvrA03:
dmi.product.name: Inspiron 1120
dmi.product.version: A03
dmi.sys.vendor: Dell Inc.
noapic isn't sufficient to work around this: if I leave the machine suspended for a non-trivial amount of time (say more than a minute), it's again unable to wake up. In that case I also can't turn the machine off using the power button anymore, and have to disconnect the battery to restart.