S3 resume and PNP (was: Re: S3 resume and serial console..)

From: Russell King
Date: Sun Jul 31 2005 - 02:10:33 EST

On Sun, Jul 31, 2005 at 10:29:58AM +1000, Dave Airlie wrote:
> latest Linus git tree, and it just does the usual entering suspend and
> then when I resume I get crap out of the serial port, nothing at all
> intelliigble...
> Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
> ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> And as I said its an i865 based motherboard from Intel... nothing
> special on it, do you need to know the super-io chip, i.e. I 'll have
> to open the case to find out...

The above two messages tells me you're probably using plug'n'play.
Unfortunately, for some unknown reason, the Linux plug'n'play
subsystem does not support suspend/resume. This is not a serial

Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core
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