Re: [jornada] sound debugged

So basically I can play sound fine until I try to suspend without a
flashboard.

In some of the 2.4 kernels somebody implemented a hack to turn off the
display, it would be nice if the same option where available in 2.6
kernels for non-flashboard users (which I presume are the
majority??????????).

I'm wondering if it isn't possible to further improve the battery life
by having some kind of suspend script which just sends a SIGSTOP to most
of the processes (e.g. everything but the kernel and something to allow
everything else to resume). Then upon resume a SIGCONT is sent to all
the processes to bring them back to life again.

I don't know how much effect this would have, but i'm sure battery
consumption is lower with no processes running as the kernel should
issuing lots of HALT instructions during the idle time, so the CPU will
draw less power.

Is it possible to tell the PCMCIA controllers to sleep and resume
without having to power off the rest of the system?

If I can make the jornada last the length of my working day on a single
battery charge then it makes it pretty much as usable as CE.

alexgrosy_at_t-online.de wrote:

>Hi,
>
>of course, the sound chip will also work without a flash board. It's just
>suspend/resume that is dependant on one of these boards (as a bootloader is
>required to resume device). When the device is suspended the CPU is
>completely reset and without a bootloader wince would just start booting when
>trying to resume without a bootloader.
>
>kind regards,
>alex
>
>On Sunday 13 February 2005 17:14, Colin Sauze wrote:
>
>
>>alexgrosy_at_t-online.de wrote:
>>
>>
>>>Hi,
>>>
>>>I have now debugged the sound on the Jornada 720 (kernel 2.6). It is now a
>>>fully featured linux device if you have a flash board (sorry guys, I can't
>>>get you any of them)
>>>
>>>
>>Why does it only work with a flashboard? I don't see how the flash board
>>alters your ability to address the sound chip?
>>
>>
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>>
>>
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>
>
Received on Mon Feb 14 2005 - 12:46:38 EST