From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: Fbdev graphics broken in xen/next dom0 Date: Fri, 12 Mar 2010 13:42:49 -0800 Message-ID: <4B9AB559.1070709@goop.org> References: <4B9AA301.6090303@tycho.nsa.gov> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4B9AA301.6090303@tycho.nsa.gov> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Eamon Walsh Cc: George Coker , Xen-devel , Konrad Rzeszutek Wilk List-Id: xen-devel@lists.xenproject.org On 03/12/2010 12:24 PM, Eamon Walsh wrote: > I work in the same group as Dave Quigley and George Coker. I'm working > on a graphical switcher application for Xen which uses the DirectFB > library on top of Linux VESA fbdev. This runs in dom0 at the moment. > I'm using the latest xen/next pvops dom0 and xen-unstable hypervisor > compiled from source, with vga=ask so I can boot dom0 in a graphical mode. > > The problem I'm having is illustrated by the attached test program that > displays a green background with a white square for 10 seconds when run > as root. It doesn't work on the xen/next / xen-unstable combo. The > program runs and exits normally but all I see is a black screen. > > The program *does* work on xen/next running on the bare metal. It also > works using the xen-unstable hypervisor with an older dom0, the 2.6.31.4 > kernel with Novell patches. So I think the issue is in the xen/next > kernel. I've run the test program on different machines and observed > the same behavior. > > The xen-unstable / 2.6.31.4 dom0 combination works and I'm using that > for the moment but I'd like to be using pvops. I would be happy to run > more tests / provide more data if needed. > What's the hardware? Do any messages appear either on the dom0 console or the Xen console? Does booting with a vga console help? Thanks, J