Screen getting locked when laptop is idle

[Kushal Jain]

Hi, I have Lenovo G550, and I installed Ubuntu 11.04 on it. Everything was working fine till few days but now I am experiencing this problem.

When I close the lid, the screen gets black and I get no response. I tried to press Alt F1, F2 etc. but nothing worked. After that, I tried to change my power settings but it also didn't worked. The only action that I left with is to restart my laptop.

As I am new to Ubuntu and using it first time, stepwise solution will be highly appreciated.

Below are the info. that I think we be helpful to you:-

Exact kernel version:
Linux kushal-Lenovo-G550 2.6.38-10-generic #46-Ubuntu SMP Tue Jun 28 15:05:41 UTC 2011 i686 i686 i386 GNU/Linux

kushal@kushal-Lenovo-G550:~$ lsb_release -rd
Description: Ubuntu 11.04
Release: 11.04

kushal@kushal-Lenovo-G550:~$ apt-cache policy pkgname
N: Unable to locate package pkgname

If you need any further information, please let me know.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: kushal 1377 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf4700000 irq 49'
   Mixer name : 'Conexant CX20561 (Hermosa)'
   Components : 'HDA:80862802,80860101,00100000 HDA:14f15051,17aac001,00100000'
   Controls : 20
   Simple ctrls : 9
DistroRelease: Ubuntu 11.04
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
MachineType: LENOVO 2958
Package: linux (not installed)
ProcEnviron:
 LANGUAGE=en_IN:en
 LANG=en_IN
 LC_MESSAGES=en_IN.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-10-generic root=UUID=0da309b7-8cfe-4f34-8b5a-24e0e639f2cb ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-10-generic N/A
 linux-backports-modules-2.6.38-10-generic N/A
 linux-firmware 1.52
Tags: natty running-unity
Uname: Linux 2.6.38-10-generic i686
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 08/21/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 18CN33WW(V2.06)
dmi.board.name: NITU1
dmi.board.vendor: LENOVO
dmi.board.version: REFERENCE
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnLENOVO:bvr18CN33WW(V2.06):bd08/21/2009:svnLENOVO:pn2958:pvrLenovoG550:rvnLENOVO:rnNITU1:rvrREFERENCE:cvnNoEnclosure:ct10:cvrN/A:
dmi.product.name: 2958
dmi.product.version: Lenovo G550
dmi.sys.vendor: LENOVO

[Brendan Donegan (brendan-donegan)]

It sounds like you might have a problem with suspending your system. Have you tried just selecting 'Suspend' from the power menu and seeing if that works okay?

Also, can you please run 'apport-collect 815942' to collect logs and other info for this bug?

Thanks,

---
Ubuntu Bug Squad volunteer triager
http://wiki.ubuntu.com/BugSquad

[Kushal Jain (t-contact2kushal)]

Hi Brendan,
 As suggested by you, when I selected "Suspend" from the power menu, my laptop got switched off. Again when I pressed power button of the laptop slightly, it showed be same freezed black screen.
The only option again left for me to restart my laptop again.
It seems that problem is with suspending the system (as told by you).
I tried running "apport-collect 815942" but it asking me for the access to my Launchpad account including my private data. Will it not lead to security breach?

I am not sure whether to provide such access or not. :(

Thanks & Regards,
Kushal

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

apport information

[Kushal Jain (t-contact2kushal)]

Hi Brendan,

I have sent report (through apport) to developers team for fixation.

Please let me know if I have to do anything else?

Regards,
Kushal

[Seth Forshee (sforshee)]

Here's a few things you can try to help with diagnosing the problems. In addition to trying the following steps, please also report back whether or not your machine has a built-in serial port.

The first thing to check is whether the machine is actually hung or if the display just isn't working properly. After attempting to resume from suspend, try pinging your device on the network or logging in over ssh.

If the machine is unresponsive, you should boot with the no_console_suspend option, then run the following tests. Probably the easiest thing for you to do is modify the file /etc/default/grub in a text editor (using sudo). Modify the line that reads

  GRUB_CMDLINE_LINUX=""

to read

  GRUB_CMDLINE_LINUX="no_console_suspend"

After saving the file, run 'sudo update-grub' in a terminal. Now you will boot with the no_console_suspend option each time you boot. You can later remove the option by removing the option from /etc/default/grub and rerunning update-grub.

After rebooting, press Ctrl-Alt-F1 to switch to virtual terminal 1. Log in and run 'sudo pm-suspend'. If the device suspends successfully, press the power button to resume. If there's anything displayed on the screen when the machine hangs, take a picture of it and attach it here.

Otherwise, please try the steps on the following wiki page and report back what you find.

https://wiki.ubuntu.com/DebuggingKernelSuspend

Thanks!

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]