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

-----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 [off-list ref] wrote:

On Sat, 2006-11-11 at 00:31 +0100, Rafael J. Wysocki wrote:

quoted

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:

quoted

Greetings,
Rafael


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

Subject: [Suspend-devel] resume not working on acer ferrari 4005

with radeonfb enabled

quoted

Date: Friday, 10 November 2006 20:44
From: "Christian Hoffmann"

[off-list ref]

quoted

To: suspend-devel@lists.sourceforge.net

Hello,
 
when I have radeonfb enabled, my laptop (X700 ati mobility) doesnt

resume

quoted

anymore. Screen stays black and nothing works anymore, no capslock

light, no
    ^^^^^^^

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

quoted

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






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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.



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Hi!

quoted

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

On Sunday, 12 November 2006 13:13, Pavel Machek wrote:

Hi!

quoted

quoted

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


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