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

-----Original Message-----
From: Rafael J. Wysocki [mailto:rjw@sisk.pl] 
Sent: Monday, November 13, 2006 3:06 PM
To: Christian Hoffmann
Cc: Pavel Machek; Benjamin Herrenschmidt; Andrew Morton; 
Solomon Peachy; linux-fbdev-devel@lists.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:

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-----Original Message-----
From: Pavel Machek [mailto:pavel@ucw.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@lists.sourceforge.net; LKML; 
Christian@ogre.sisk.pl; Hoffmann@albercik.sisk.pl
Subject: Re: Fwd: [Suspend-devel] resume not working on 

acer ferrari 

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4005 with radeonfb enabled

Hi!

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Then the radeonfb doesn't kick in at all (guess some 

pci ids are 

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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

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you get console mode back and then X ? Or it only comes 

back when 

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going back to X ? Do you have some userland-type vbetool

thingy that

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bring it back ?

He's using s3_bios+s3_mode, so kernel does some BIOS 

calls to reinit 

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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 

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with that, but I'll try again.

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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 

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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 

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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

And then it never goes to sleep. 
BTW: same if I use radeonfb as a module and try to blacklist this
module. It complains that radeonfb is still in use. 
Arghhh :)

Chris


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