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  From: Jont Allen <jba@research.att.com>
  To  : <ptb@it.uc3m.es>
  Date: Tue, 23 Nov 1999 18:26:42 -0500

Re: Solution to Suspend/Resume and Crystal Sound problems on ThinkPad380XD (maybe also 385XD or other models)

"Peter T. Breuer" wrote:
> > I recompiled the kernel with these options for APM: (this is necessary)
> >     [*] Advanced Power Management
> >          [ ] Ignore USER SUSPEND
> >          [ ] Enable APM at boot time
> >          [*] Make CPU IDLE calls when idle
> >          [*] Enable console blanking using APM
> >          [*] Power off on shutdown
> >          [*] Ignore multiple suspend/standby events
> >          [*] Ignore multiple suspend/resume cycles
> 
> These last two are required.
> 
> >          [ ] RTC stores time in GMT
> >          [*] Allow interrupts during APM BIOS calls
> 
> I believe I also did this. It rings a bell.
> 
>    CONFIG_APM=y
>    # CONFIG_APM_IGNORE_USER_SUSPEND is not set
>    CONFIG_APM_DO_ENABLE=y

This response seems to be different that the above list. And it
could be important.

>    CONFIG_APM_CPU_IDLE=y

>    # CONFIG_APM_DISPLAY_BLANK is not set
>    # CONFIG_APM_POWER_OFF is not set

these two are different but I expect not important.

>    CONFIG_APM_IGNORE_MULTIPLE_SUSPEND=y
how is y here supposed to map to the 'Allow interupts' above?
It seems to me you Dont want to allow interrupts to map onto
ignore mult suspends. Am I missing something here? We know
that CONFIG_APM_IGNORE_MULTIPLE_SUSPEND=y is a critical response
to get APM to work on the think pad. 

> 
> (2.0.36 and 35). In the code ...
> 
>  /* defined by PTB */
>  #define APM_DEBUG
>  #define ALWAYS_CALL_BUSY
>  /* undef'ed by ptb for TP380 */

I hadn't heard about this one. But then I have an IBM-560X.

>  #undef APM_NOINTS
>  #define APM_ZERO_SEGS
>  #define APM_RELAX_SEGMENTS
> 
> 


> Possibly. I have it the other way round. The crystal driver needs a firmware
> key sent to it to set itself up. It may have changed.

Can you explain this to me. What is the purpose of the key? Are you talking
about encription of some form?

> 
> Peter


Jont
-- 
Jont B. Allen
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