Rahul Karnik on Wed, 9 Oct 2002 17:03:16 -0400


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Re: [PLUG] Compiliing a RedHat kernel for Vaio R505


Chris,

W. Chris Shank wrote:
The IRQ issue definately is related to ACPI being necessary. And I've read
most of those google links.

That's what I thought.

I'm not opposed to the newer kernel - in fact I tried mandrake 9 briefly
and it's 2.4.19 kernel recognized the firewire cdrom. still had a pcmcia
problem though. but i think the RH kernel's scheduler makes for a faster
interface.

You mean this scheduler? http://people.redhat.com/mingo/O(1)-scheduler/

or with preempt:
ftp://ftp.kernel.org/pub/linux/kernel/people/rml/sched/ingo-O1/

As for PCMCIA, you might want to try the pcmcia-cs distribution from pcmcia-cs.sourceforge.net. These are the original PCMCIA drivers and they often work where the in-kernel drivers don't. Note that you do have to turn off PCMCIA support in your kernel config to use these.

After installing PCMCIA, you might want to fiddle with the IRQ settings in /etc/pcmcia/config.opts or /etc/sysconfig/pcmcia, can't remember which. And definitely ask for support on the Sourceforge site, I have had quick responses before.

all of the kernel issues i have with this laptop are not necessarily
related to it being a laptop so much as it being a SONY SUPERSLIM. This
model has some funky hardware and funky hardware settings.

Definitely true. The Sony's started the trend of being ACPI only, for instance. ACPI is great when the BIOS implementation is good, or else the OS has to apply large batches of bandaid to keep things from working. So far the Linux ACPI developers have tended to simply blacklist such machines, rather than hack to get them working. Your problems might simply stem from ACPI not setting up the PCMCIA controller interrupts correctly.


Good luck,
Rahul
--
Rahul Karnik
rahul@genebrew.com

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