[ltp] Suspend/resume on T40

[Carl Nygard]

On Thu, 2003-10-09 at 15:47, Satish Balay wrote:
> On Thu, 9 Oct 2003, Carl Nygard wrote:
> 
> > 
> > I've followed a few threads about suspend/resume, and I thought what I
> > did should work, according to others' experience.  I have a stock RH9
> > install, with my own 2.4.22-ac4 kernel (CONFIG_APM_DISPLAY_BLANK=n,
> > CONFIG_VESA_FB=y).  cpudyn is speedstep-ing the processor nicely.
> > 
> > I also updated the XFree86 rpms from the fedora severn beta
> > 
> > At this point, the screen turns off if I shut the lid, turns back on
> > properly, X resumes fine (this also worked before upgrading XF86).
> > 
> > I expected the severn XF86 beta rpms to allow the Fn-F3/4 keys to work
> > properly, but nothing at all happens.  I can turn on the light and dim
> > the lcd with the Fn-xx keys, so the Fn key seems to be working.
> > 
> > I'm about to try updating gdm as well from the severn beta, but I don't
> > know if that will have an effect.
> > 
> > Anyone have other clues?
> 
> Perhaps you can also try the severn/rawhide kernel?
> 
> I've started from severn (beta 2) and upped to rawhide using 'yum' and
> Fn-F3/4 worked with both. Note: this is with APM.
> 
> I've tried booting to ACPI with the latest rawhide kernel - but
> Fn-F3/4 don't work.
> 
> I haven't tried cpudyn - does this require ACPI?

No, but it does require the centrino-speedstep patches (see
http://bellet.info/~bellet/laptop/t40.html).  It works quite nicely, and
has some disk spin-down features as well (haven't tried those yet, tho).
http://mnm.uib.es/~gallir/cpudyn/

BTW, if you try to use chkconfig to manage it, you have to modify the
/etc/init.d/cpudyn script, the 'chkconfig: 2345' line needs two more
numbers ( I use '20 80')

-- 
Carl Nygard <cjnygard@fast.net>