[ltp] Problem with ACPI Standby on G41

Wed, 31 Aug 2005 09:31:21 +0100

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prosolutions@gmx.net wrote:
> So wrote Jiang Qian on Tuesday, 30 August 2005:
> 
>>I quote:
>> You may experience problems when using # echo standby > 
>>/sys/power/state (machine goes to sleep and wakes up immediately). This 
>>can be avoided by using # echo -n 3 >/proc/acpi/sleep to get it to 
>>sleep. This can be also happen if hotplug daemon is still running.
>>
>>---http://thinkwiki.org/wiki/How_to_make_ACPI_work
>>worth a try: stop hotplug and then do echo -n 3 > /proc/acpi
>>Jiang
>>On Tue, Aug 30, 2005 at 04:56:47PM -0700, prosolutions@gmx.net wrote:
>>
>>>>I'll be interested in your experiments, because I have a G41, and there 
>>>>don't seem to be many out there.
>>>>
> 
> 
> Okay here is a result of my experiments so far:
> 
> In order to do   echo -n 3 >/proc/acpi/sleep  I had to re-compile the
> kernel and enable /proc/acpi/sleep
> 
> Also, I found a thread referencing this document:
> http://www.john-hunt.com/linux/2005/08/24/suspend-s3-on-ibm-thinkpad-r50e/
> which says that all framebuffer support must be disable so I also did
> that (although I should note that in the past on other models I have always used VESA framebuffer and never had a problem with suspend).  I also tried his script, changing the line cat /proc/bus/pci/00/02.0 > /tmp/  to cat /proc/bus/pci/01/00.0 > /tmp/  since lspci shows the nVidia VGA controller at 0000:01:00.0
> 
> Using either that script or else just doing echo -n 3 >/proc/acpi/sleep
> here is what happens:
> 
> The computer goes into sleep.  Immediately after running the command I
> see the text console and a message that it is stopping all tasks and
> what looks like a text-based progress meter.  Then it takes a few
> seconds and then the little Moon light lights up.  The unit is sleeping.
> But when I press the Fn key to wake it up, it appears to start waking
> up.  The Moon light goes out and the disk light lights up.  But the
> screen stays blank and nothing more happens.  The machine is totally
> unresponsive and I must hold the power button down a few seconds to
> power it off and restart.
> 
> So at least it is doing something, but it is failing to wake up
> properly.  
> framebuffer and bee
> 

Daniel,

The kernel version of ibm-acpi was recently lagging behind by a few 
versions; 0.8 vs 0.11 from memory.  What does
$ cat /proc/acpi/ibm/driver
tell you?

If you don't have 0.11, you should get the software from 
http://ibm-acpi.sourceforge.net/, disable ibm-acpi in the kernel config, 
recompile the kernel, then apply 0.11.

If you are running Gentoo or Debian, there are packages to do the 
install, but you must have your kernel compiled _without_ ibm-acpi 
support.  Read the README in the ibm-acpi tarball for details.

Peter

-- 
Peter B. West <http://cv.pbw.id.au/>
Folio <http://defoe.sourceforge.net/folio/>

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