Suspend always hangs on Asus N55S, becomes really hot
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Unassigned |
Bug Description
Hi. There are several bug reports about suspend hanging on various brands of laptops.
Even on Asus there are several : #335526, #779979, #772834.
Making a separate one as I don't know if the root cause is the same as any of them.
(This is recommended by e.g. https:/
Exact hardware : Asus N55SF-S1437V.
Reproducible : always, even in live-USB
Minimal steps to reproduce :
* boot 12.04 precise from today's daily iso
* use the "suspend" item in system menu (gear icon on top right)
Steps to reproduce that I used for this bug report :
* install 12.04 precise from today's daily iso
* reboot
* do not even login, use the "suspend" item in system menu (gear icon on top right)
* reboot, login, type "ubuntu-bug linux"
Expected:
* black screen, fan off, LEDs off except power led that blinks every few seconds
* on keypress, system wakes up returns to pre-suspend state
Observed:
* black screen but text-mode underline-style cursor remains visible on top left
* fan remains on, air from fan vent gets really *hot* (nearly like a hair dryer)
* power led remains on
* pressing any key or power switch (which looks like a regular key) has no effect
* holding power key 4 seconds (which normally turns the machine off) makes the power led turn off for a fraction of a second then on, but the machine does not actually boot
* holding power key 4 seconds again turns the machine off. Then it can be turned on again.
Additional information :
* Bug confirmed also when booting from live-USB.
* This laptop has nvidia optimus feature (I have done nothing about it).
* Air from fan vent is quickly warm, I've read it's because nVidia chip consumes power until some driver shuts it off.
* On suspend the air from fan vent quickly gets really *hot*.
* On a separate partition, I Installed 12.04 with bumblebee. It fixes warm air on normal use, but does not change behavior on suspend.
* On normal operation, pressing power switch (which looks like a regular key) has no effect (even xev does not notice anything).
* Powering off or rebooting using system menu works.
* BIOS is up-to-date according to Asus website
Top ease triage I read https:/
Did the machine break while going to sleep or waking up? I think it's a sleep failure because it does not reach the point where everything seems off except slowly blinking power led.
Is it reproducible? Every time I asked it to suspend (maybe 10 times already). No variation in symptoms.
Did it work before? Have not tried older distribution. Works in Windows supplied with hardware.
Do you end up with flashing Caps Lock light or similar? No.
As next steps I'm considering :
* "Suspending from text mode" section in https:/
* I have read https:/
* I kept several copies of precise on different partitions for test. If you need more information or something to test, please ask.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.2.0-23-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu5
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC663 Analog [ALC663 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xdf000000 irq 56'
Mixer name : 'Realtek ALC663'
Components : 'HDA:10ec0663,
Controls : 23
Simple ctrls : 12
Date: Mon Apr 23 02:37:20 2012
HibernationDevice: RESUME=
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120421)
MachineType: ASUSTeK Computer Inc. N55SF
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcFB:
0 nouveaufb
1 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.79
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/29/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: N55SF.207
dmi.board.
dmi.board.name: N55SF
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: N55SF
dmi.product.
dmi.sys.vendor: ASUSTeK Computer Inc.
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
* Tried the no_console_suspend in /wiki.ubuntu. com/DebuggingKe rnelSuspendHibe rnateResume
https:/
Did not produce messages on suspend.
Showed messages from "nouveau" driver before login.