[ltp] undervolted T43 does not resume from suspend-to-ram when on battery

Daniel Maier linux-thinkpad@linux-thinkpad.org
Mon, 30 Jan 2006 18:50:54 +0100


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On Mon, Jan 30, 2006 at 05:19:50PM +0100, Marcus Obst wrote:
> On Mon, Jan 30, 2006 at 03:58:25PM +0100, Daniel Maier wrote:
>=20
> > Have you disabled all powermanagment in BIOS? On my T22 I have to
> > set everything to 'custom' and then set everywhere max cpu speed.
> > Else I am limited to 700mhz when booting without AC.
>=20
> I think BIOS is not an issue.  When booting without AC BIOS sets
> frequency to lowest available (in my case 800MHZ -> T43) then Linux
> boots up and uses the performance governer (default in my kernel config)
> which in fact resets cpu frequency to the highest available (1866MHz).
>
Oh. In my case that does not work. It is some time ago, but I think
I could only change in a lower range, eg 400/600 when it was usually
700/900.

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