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  From: <yves@vlaanderen.net>
  To  : Adam Spiers <adam@spiers.net>
  Date: Wed, 26 May 1999 09:36:13 +0200 (CEST)

Re: CPU slows to a crawl after resume from suspend

Hello,

I have a Thinkpad 560 and a tip that might help you. First I Compiled the
Floppy driver as a module. When I want to suspend or hybernate, i have
to unload the floppy driver. I don't know why but this fixes the problem
for me. I have added this to all my other suspend actions.

Hope this helps,

-Yves

On Tue, 25 May 1999, Adam Spiers wrote:

> Hi there,
> 
> I've just got a nice new IBM ThinkPad 390E (UK version) and am running
> Redhat 6.0 and a 2.3.3 kernel:
> 
> % uname -a
> Linux pulse.ram.ac.uk 2.3.3 #4 SMP Tue May 18 14:58:45 BST 1999 i686 unknown
> 
> Standby mode works fine, but when I suspend (or hibernate) the machine
> and then resume, the CPU slows right down.  Using
> 
> % time perl -le 'for (1 .. 100000) { $i++; print $i if $i % 1000 == 0 }'
> 
> as a very primitive benchmark shows:
> 
> 0.38s user 0.00s system 99% cpu 0.383 total
> 
> for the normal speed, and
> 
> 36.38s user 0.19s system 43% cpu 1:23.95 total
> 
> for after a suspend and resume.
> 
> # apmd -V
> apmd version 3.0beta4
> 
> # apm --debug
> APM BIOS 1.2 (kernel driver 1.9)
> AC off-line, battery status high: 73% (2:21)
> Using device 0x0a86, 1.9: 1.2
> APM Flags =      0x03; AC Line Status = 0x00
> Battery Status = 0x00; Battery Flags =  0x01
> Battery %age   =   73; Battery Time   =  141, use_mins=1
> 
> # grep APM /usr/src/linux/.config
> CONFIG_APM=y
> # CONFIG_APM_IGNORE_USER_SUSPEND is not set
> CONFIG_APM_DO_ENABLE=y
> # CONFIG_APM_CPU_IDLE is not set
> # CONFIG_APM_DISPLAY_BLANK is not set
> CONFIG_APM_POWER_OFF=y
> CONFIG_APM_IGNORE_MULTIPLE_SUSPEND=y
> CONFIG_APM_IGNORE_SUSPEND_BOUNCE=y
> CONFIG_APM_RTC_IS_GMT=y
> CONFIG_APM_ALLOW_INTS=y
> 
> I've fiddled around with some of these kernel APM settings, but to no
> avail.  Suggestions very welcome, as this is driving me mad!
> 
> -- 
>      .         __                            ,
>  _. _| _.._ _ /(]|  __._ * _ ._. __   ._  _ -+-       music student @ RAM.ac.uk
> (_](_](_][ | )\__/ _) [_)|(/,[  _)  * [ )(/, |      part-time Perl/Linux hacker
>                       |                          http://www.new.ox.ac.uk/~adam/
> 
> 
> 

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