Andrew Liu
2006-Apr-24 22:15 UTC
[Xen-tools] xen doesn''t support "Framebuffer console support"properly
When I turn on the "Framebuffer console support" in compiling kernel, after system startup, the console doesn''t work properly and the kernel parameter( for example: vga=719) doesn''t do any effect on kernel. who can help me ? thanks in advance! Andrew Liu _______________________________________________ Xen-tools mailing list Xen-tools@lists.xensource.com http://lists.xensource.com/xen-tools
Mathieu Ropert
2006-Apr-25 09:31 UTC
Re: [Xen-devel] RE: [Xen-tools] xen doesn''t support "Framebuffer consolesupport"properly
Basically, *any* screen output require access to video memory :) However, Xen offer a virtual console facility to domU so they can output things, but it''s a text-only console (although they are some projects of providing a virtual framebuffer support). Dom0 has direct access to video memory so it shouldn''t be a problem to use framebuffer on it. Mathieu Robert Mortimer wrote:>Is this a DomU or a Dom0 kernel? > >>From my scant understanding the following is true:- > >only Dom0 gets to see the true hardware still runs above the hypervisor > >If frambuffer mode requires direct access to hardware then it may not work. >I am not positive but does frambuffer involves direct writing to video >memory > >DomU gets to see idealized Xen hardware and presumably uses some sort of Xen >video driver. > >DomU does no direct rendering to screen instead it uses VNC > >I may however be so so wrong as I am a bit new to this > >Robert > > > >>-----Original Message----- >> >>When I turn on the "Framebuffer console support" in compiling kernel, >>after system startup, the console doesn''t work properly and the kernel >>parameter( for example: vga=719) doesn''t do any effect on kernel. >> >>who can help me ? >>thanks in advance! >>Andrew Liu >> >> >> >>_______________________________________________ >>Xen-tools mailing list >>Xen-tools@lists.xensource.com >>http://lists.xensource.com/xen-tools >> >> >> > > >_______________________________________________ >Xen-devel mailing list >Xen-devel@lists.xensource.com >http://lists.xensource.com/xen-devel > >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel