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

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

[Christian Hoffmann]

-----Original Message-----
From: Andrew Morton [mailto:akpm@osdl.org] 
Sent: Saturday, November 11, 2006 3:03 AM
To: Benjamin Herrenschmidt; Solomon Peachy
Cc: Rafael J. Wysocki; linux-fbdev-devel@lists.sourceforge.net; LKML;
Christian@ogre.sisk.pl; Hoffmann@albercik.sisk.pl; Christian Hoffmann
Subject: Re: Fwd: [Suspend-devel] resume not working on acer ferrari
4005 with radeonfb enabled

On Sat, 11 Nov 2006 12:49:06 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> On Sat, 2006-11-11 at 00:31 +0100, Rafael J. Wysocki wrote:
> > Hi,
> > 
> > We've just got the appended report.  Could you please have a look at
this?
> 
> There are many possible reasons for that. The most likely is that the
> BIOS isn't bringing the chip back on resume, causing radeonfb to
> crash when trying to access it.
> 

I assume from this:

> > Greetings,
> > Rafael
> > 
> > 
> > ----------  Forwarded Message  ----------
> > 
> > Subject: [Suspend-devel] resume not working on acer ferrari 4005
with radeonfb enabled
> > Date: Friday, 10 November 2006 20:44
> > From: "Christian Hoffmann"
<Christian.Hoffmann@wallstreetsystems.com>
> > To: suspend-devel@lists.sourceforge.net
> > 
> > Hello,
> >  
> > when I have radeonfb enabled, my laptop (X700 ati mobility) doesnt
resume
> > anymore. Screen stays black and nothing works anymore, no capslock
light, no
    ^^^^^^^

>that it's a regression, from some unknown-previous-kernel-version.



> > ctrl alt sysreq b etc. I tried all kind of things vbetool, passing
> > acpi_sleep=s3_bios,s3_mode to the kernel. Nothing seems to work.
> >  
> > You can see dmesg output and lspci -vv output here 
> >  http://christianhoffmann.de/temp/radeon.log
> >  http://christianhoffmann.de/temp/lspci.log
> >  
> > Thanks a lot for any input.
> >  
> > Chris
> >  
> > PS: I use kernel 2.18.1 + patch for radeonfb from
> > http://bugzilla.kernel.org/attachment.cgi?id=9408&action=view

>That's http://www.shaftnet.org/~pizza/radeonfb-atom-2.6.18-v6a.diff.

>What happens when that patch isn't applied?


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.

Chris






Privileged or confidential information may be contained in this message.  If you are not the addressee of this message please notify the sender by return and thereafter delete the message, and you may not use, copy, disclose or rely on the information contained in it. Internet e-mail may be susceptible to data corruption, interception and unauthorised amendment for which Wall Street Systems does not accept liability. Whilst we have taken reasonable precautions to ensure that this e-mail and any attachments have been swept for viruses, Wall Street Systems does not accept liability for any damage sustained as a result of viruses.  Statements in this message or attachments that do not relate to the business of  Wall Street Systems are neither given nor endorsed by the company or its Directors.

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

[Benjamin Herrenschmidt]

> 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 ?

Ben.

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

[Pavel Machek]

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?

Next possibility is setting up serial console and adding some printks
to radeon...
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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

[Rafael J. Wysocki]

On Sunday, 12 November 2006 13:13, Pavel Machek wrote:
> 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?
> 
> Next possibility is setting up serial console and adding some printks
> to radeon...

I guess this box has no serial ports, but netconsole should do (provided
there's another box nearby on which netcat can be run).

Rafael


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

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

[Rafael J. Wysocki]

On Monday, 13 November 2006 23:08, Christian Hoffmann wrote:
> 
> > -----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:
> > > 
> > > > -----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 
> > > > 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

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

[Christian Hoffmann]

 

> -----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:
> > 
> > > -----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 
> > > 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

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


Privileged or confidential information may be contained in this message.  If you are not the addressee of this message please notify the sender by return and thereafter delete the message, and you may not use, copy, disclose or rely on the information contained in it. Internet e-mail may be susceptible to data corruption, interception and unauthorised amendment for which Wall Street Systems does not accept liability. Whilst we have taken reasonable precautions to ensure that this e-mail and any attachments have been swept for viruses, Wall Street Systems does not accept liability for any damage sustained as a result of viruses.  Statements in this message or attachments that do not relate to the business of  Wall Street Systems are neither given nor endorsed by the company or its Directors.

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

[Pavel Machek]

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.

I think it could. Be sure to compile vga text-mode support into
kernel.

-- 
Thanks, Sharp!

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

[Rafael J. Wysocki]

On Monday, 13 November 2006 11:51, Christian Hoffmann wrote:
> 
> > -----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 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.

Greetings,
Rafael


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

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

[Christian Hoffmann]

> -----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 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) 

Chris


Privileged or confidential information may be contained in this message.  If you are not the addressee of this message please notify the sender by return and thereafter delete the message, and you may not use, copy, disclose or rely on the information contained in it. Internet e-mail may be susceptible to data corruption, interception and unauthorised amendment for which Wall Street Systems does not accept liability. Whilst we have taken reasonable precautions to ensure that this e-mail and any attachments have been swept for viruses, Wall Street Systems does not accept liability for any damage sustained as a result of viruses.  Statements in this message or attachments that do not relate to the business of  Wall Street Systems are neither given nor endorsed by the company or its Directors.

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

[Christian Hoffmann]

>There are many possible reasons for that. The most likely is that the
>BIOS isn't bringing the chip back on resume, causing radeonfb to
>crash when trying to access it.

>Ben.
Is there any possible workaround for this, or some tracing possible so
we can prove the hypothesis?

Chris



Privileged or confidential information may be contained in this message.  If you are not the addressee of this message please notify the sender by return and thereafter delete the message, and you may not use, copy, disclose or rely on the information contained in it. Internet e-mail may be susceptible to data corruption, interception and unauthorised amendment for which Wall Street Systems does not accept liability. Whilst we have taken reasonable precautions to ensure that this e-mail and any attachments have been swept for viruses, Wall Street Systems does not accept liability for any damage sustained as a result of viruses.  Statements in this message or attachments that do not relate to the business of  Wall Street Systems are neither given nor endorsed by the company or its Directors.

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

[Andrew Morton]

On Sat, 11 Nov 2006 12:49:06 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> On Sat, 2006-11-11 at 00:31 +0100, Rafael J. Wysocki wrote:
> > Hi,
> > 
> > We've just got the appended report.  Could you please have a look at this?
> 
> There are many possible reasons for that. The most likely is that the
> BIOS isn't bringing the chip back on resume, causing radeonfb to
> crash when trying to access it.
> 

I assume from this:

> > Greetings,
> > Rafael
> > 
> > 
> > ----------  Forwarded Message  ----------
> > 
> > Subject: [Suspend-devel] resume not working on acer ferrari 4005 with radeonfb enabled
> > Date: Friday, 10 November 2006 20:44
> > From: "Christian Hoffmann" <Christian.Hoffmann@wallstreetsystems.com>
> > To: suspend-devel@lists.sourceforge.net
> > 
> > Hello,
> >  
> > when I have radeonfb enabled, my laptop (X700 ati mobility) doesnt resume
> > anymore. Screen stays black and nothing works anymore, no capslock light, no
    ^^^^^^^

that it's a regression, from some unknown-previous-kernel-version.

> > ctrl alt sysreq b etc. I tried all kind of things vbetool, passing
> > acpi_sleep=s3_bios,s3_mode to the kernel. Nothing seems to work.
> >  
> > You can see dmesg output and lspci -vv output here 
> >  http://christianhoffmann.de/temp/radeon.log
> >  http://christianhoffmann.de/temp/lspci.log
> >  
> > Thanks a lot for any input.
> >  
> > Chris
> >  
> > PS: I use kernel 2.18.1 + patch for radeonfb from
> > http://bugzilla.kernel.org/attachment.cgi?id=9408&action=view

That's http://www.shaftnet.org/~pizza/radeonfb-atom-2.6.18-v6a.diff.

What happens when that patch isn't applied?

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

[Benjamin Herrenschmidt]

On Sat, 2006-11-11 at 00:31 +0100, Rafael J. Wysocki wrote:
> Hi,
> 
> We've just got the appended report.  Could you please have a look at this?

There are many possible reasons for that. The most likely is that the
BIOS isn't bringing the chip back on resume, causing radeonfb to
crash when trying to access it.

Ben.
 
> Greetings,
> Rafael
> 
> 
> ----------  Forwarded Message  ----------
> 
> Subject: [Suspend-devel] resume not working on acer ferrari 4005 with radeonfb enabled
> Date: Friday, 10 November 2006 20:44
> From: "Christian Hoffmann" <Christian.Hoffmann@wallstreetsystems.com>
> To: suspend-devel@lists.sourceforge.net
> 
> Hello,
>  
> when I have radeonfb enabled, my laptop (X700 ati mobility) doesnt resume
> anymore. Screen stays black and nothing works anymore, no capslock light, no
> ctrl alt sysreq b etc. I tried all kind of things vbetool, passing
> acpi_sleep=s3_bios,s3_mode to the kernel. Nothing seems to work.
>  
> You can see dmesg output and lspci -vv output here 
>  http://christianhoffmann.de/temp/radeon.log
>  http://christianhoffmann.de/temp/lspci.log
>  
> Thanks a lot for any input.
>  
> Chris
>  
> PS: I use kernel 2.18.1 + patch for radeonfb from
> http://bugzilla.kernel.org/attachment.cgi?id=9408&action=view

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

[Rafael J. Wysocki]

Hi,

We've just got the appended report.  Could you please have a look at this?

Greetings,
Rafael


----------  Forwarded Message  ----------

Subject: [Suspend-devel] resume not working on acer ferrari 4005 with radeonfb enabled
Date: Friday, 10 November 2006 20:44
From: "Christian Hoffmann" <Christian.Hoffmann@wallstreetsystems.com>
To: suspend-devel@lists.sourceforge.net

Hello,
 
when I have radeonfb enabled, my laptop (X700 ati mobility) doesnt resume
anymore. Screen stays black and nothing works anymore, no capslock light, no
ctrl alt sysreq b etc. I tried all kind of things vbetool, passing
acpi_sleep=s3_bios,s3_mode to the kernel. Nothing seems to work.
 
You can see dmesg output and lspci -vv output here 
 http://christianhoffmann.de/temp/radeon.log
 http://christianhoffmann.de/temp/lspci.log
 
Thanks a lot for any input.
 
Chris
 
PS: I use kernel 2.18.1 + patch for radeonfb from
http://bugzilla.kernel.org/attachment.cgi?id=9408&action=view