#144 My laptop freezes when OS detect pcmcia

[Anonymous]

My laptop is FOSA CL10 and it have two 02Micro
OZ6933 pcmcia controllers. I have installed RH7.3
on my machine. I must disable the pcmcia service
in /etc/sysconfig/pcmcia, otherwise my machine
freezes completly when OS boot and detect the
PCMCIA controllers. The boot messages shown as
following: "Starting pcmcia: PCI: NO IRQ know for
interrupt pin A of device 02:04.0.0 please try using
pci=biosirq" and "PCI: NO IRQ know for interrupt
pin B of device 02:04.0.0 please try using
pci=biosirq". I have tried to add "pci=biosirq"
in /etc/sysconfig/pcmcia file but it doesn't work.
Please some body help me to resolve the problem.
Thanks a lot.

[Nobody/Anonymous]

messages for debug

[David Hinds]

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Check your BIOS settings; if you have one for "PnP OS
support", try changing that.

-- Dave

[Nobody/Anonymous]

Logged In: NO

Hi, Dave --

There is no "PnP OS support" option in my BIOS.
Do you have other comments?
thanks.

[David Hinds]

Logged In: YES
user_id=7760

The "NO IRQ" problem is a persistent kernel bug/limitation
and I don't know of a good workaround. You may have better
luck if you can delete the kernel PCMCIA modules and install
the standalone pcmcia-cs modules. But those may not work
on this laptop either. Running an ACPI kernel may help but I
don't know which kernel versions have the appropriate level of
ACPI support.

-- Dave

[David Hinds]

Logged In: YES
user_id=7760

I believe that either using a current 2.5 kernel or the latest
ACPI patches for 2.4 kernels would be likely to help. You
can get patches for 2.4 kernels from
http://acpi.sourceforge.net. You may need to then boot with
a "pci=acpi" option though I can't find much documentation
on that.

-- Dave