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Re: [Xen-devel] Re: vt-d p7p55d evo: Success

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] Re: vt-d p7p55d evo: Success
From: Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxx>
Date: Mon, 12 Apr 2010 10:34:35 +0200
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, listmail <listmail@xxxxxxxxxxxx>
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Am 12.04.2010 schrieb Pasi Kärkkäinen:
> On Mon, Apr 12, 2010 at 08:55:54AM +0200, Dietmar Hahn wrote:
> > >     Capabilities: [78] Express (v2) Endpoint, MSI 00
> > >         DevCap:    MaxPayload 128 bytes, PhantFunc 0, Latency L0s 
> > > <512ns, L1 <4us
> > >             ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
> > >         DevCtl:    Report errors: Correctable- Non-Fatal- Fatal- 
> > 
> > This is the same behavior as on my laptop where the copied VGA-BIOS not
> > works in the domU (beside no FLR - see flag FLReset-).
> > 
> So hmm.. the device will have "FLReset-" in the DevCap section when FLR is 
> supported? 
> Or does that "-" mean it's not supported?

As far as I understand the code in lspci right "-" means not supported.

And FLR seems really not to work because the part from the original mail says:
> shutdown of Xorg can leave you with a blank console
> shutdown then Restart of domU without restarting dom0 may lead to no VGA 
> output, however you can still ssh in and startx (Xorg) and it will 
> produce output

And as he wrote:
> it takes a bit before you see VGA output on boot
I had the same effect. I first saw the linux kernel boot messages, nothing from
BIOS or grub but X11 works fine.
I think the cause is that BIOS and grub are using INT10 (but VGA-BIOS is not
working right). Later linux kernel and X11 are using direct card access.

X11 works but when I start Windows XP no graphic output!


> -- Pasi
Dietmar Hahn
Fujitsu Technology Solutions
Domagkstraße 28, D-80807 München, Germany
Tel: +49 (89) 3222 2952
Email: dietmar.hahn@xxxxxxxxxxxxxx
Web:  http://ts.fujitsu.com
Company details: http://ts.fujitsu.com/imprint.html

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