linux-kernel - Re: Fwd: [Suspend-devel] resume not working on acer ferrari 4005 with radeonfb enabled

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Date:	Tue, 14 Nov 2006 00:08:54 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"Christian Hoffmann" <Christian.Hoffmann@...lstreetsystems.com>
Cc:	"Pavel Machek" <pavel@....cz>,
	"Benjamin Herrenschmidt" <benh@...nel.crashing.org>,
	"Andrew Morton" <akpm@...l.org>,
	"Solomon Peachy" <pizza@...ftnet.org>,
	linux-fbdev-devel@...ts.sourceforge.net,
	"LKML" <linux-kernel@...r.kernel.org>
Subject: Re: Fwd: [Suspend-devel] resume not working on acer ferrari 4005 with radeonfb enabled

On Monday, 13 November 2006 23:08, Christian Hoffmann wrote:
> 
> > -----Original Message-----
> > From: Rafael J. Wysocki [mailto:rjw@...k.pl] 
> > Sent: Monday, November 13, 2006 3:06 PM
> > To: Christian Hoffmann
> > Cc: Pavel Machek; Benjamin Herrenschmidt; Andrew Morton; 
> > Solomon Peachy; linux-fbdev-devel@...ts.sourceforge.net; LKML
> > Subject: Re: Fwd: [Suspend-devel] resume not working on acer 
> > ferrari 4005 with radeonfb enabled
> > 
> > On Monday, 13 November 2006 11:51, Christian Hoffmann wrote:
> > > 
> > > > -----Original Message-----
> > > > From: Pavel Machek [mailto:pavel@....cz]
> > > > Sent: Sunday, November 12, 2006 1:14 PM
> > > > To: Benjamin Herrenschmidt
> > > > Cc: Christian Hoffmann; Andrew Morton; Solomon Peachy; Rafael J. 
> > > > Wysocki; linux-fbdev-devel@...ts.sourceforge.net; LKML; 
> > > > Christian@...e.sisk.pl; Hoffmann@...ercik.sisk.pl
> > > > Subject: Re: Fwd: [Suspend-devel] resume not working on 
> > acer ferrari 
> > > > 4005 with radeonfb enabled
> > > > 
> > > > Hi!
> > > > 
> > > > > > Then the radeonfb doesn't kick in at all (guess some 
> > pci ids are 
> > > > > > added in that patch).
> > > > > > 
> > > > > > BTW: resume/suspend works ok if I have the vesa fb enabled.
> > > > > 
> > > > > In that case (vesafb), when does the screen come back
> > > > precisely ? Do
> > > > > you get console mode back and then X ? Or it only comes 
> > back when 
> > > > > going back to X ? Do you have some userland-type vbetool
> > > > thingy that
> > > > > bring it back ?
> > > > 
> > > > He's using s3_bios+s3_mode, so kernel does some BIOS 
> > calls to reinit 
> > > > the video. It should come out in text mode, too.
> > > > 
> > > > Christian, can you unload radeonfb before suspend/reload it after 
> > > > resume?
> > > 
> > > Will it work if radeonfb is compiled as module? I think I 
> > had problems 
> > > with that, but I'll try again.
> > > 
> > > > 
> > > > Next possibility is setting up serial console and adding some 
> > > > printks to radeon...
> > > 
> > > Unfortunatly, the laptop doesn't have serial port. I tried to get a 
> > > USB device (pocketpc) read the USB serial, but I only partially 
> > > succeeded. I can pass console=ttyUSB0 to the kernel and 
> > load the ipaq 
> > > serial console driver as it oopses. I am able to echo strings to 
> > > /dev/ttyUSB0  and read them on the ipaq, but I am not able to 
> > > "deviate" the kernel messages to that port. Any hints on how to do 
> > > that would be very appreciated, I didn't find anything 
> > usefull on the 
> > > web. (I tried with setconsole /dev/ttyUSB0 but it gives error msg 
> > > about device busy or something)
> > 
> > Would it be practicable to use netconsole on your box?  If 
> > so, it should work.
> > 
> I tried netconsole, and it somehow works, but when suspending it says in
> an "infinite" loop:
> 
> unregister_netdevice: waiting for eth2 to become free. Usage count = 1

Hm.  Is your kernel compiled with CONFIG_DISABLE_CONSOLE_SUSPEND set?

Rafael


-- 
You never change things by fighting the existing reality.
		R. Buckminster Fuller
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