From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: beginnings of allowing more than the basic 80x25 VGA screen resolution Date: Mon, 04 Jul 2005 02:00:29 -0600 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir.Fraser@cl.cam.ac.uk Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org >We could certainly add a way to propagate the mode option through to >the vga driver, but is the Linux vga driver really unable to switch >modes without bios help? Is there support for a protected-mode vesa/vbe >driver instead? As far as I know, not only the VGA driver does not do any mode switching, even the VESA one doesn't (because the protected mode interface doesn't cover the mode switching functions as far as I remember). Only the video board specific frame buffer drivers are able to switch modes, and the bad thing (for me personally) is that even in 2.6.12 there still is no (64-bit) support for the i915 chipset. So I continue to be required to live with the video mode that XEN 'sets' prior to loading dom0, and short of it supporting a VESA console my first minimal attempt was to at least increase (and propagate) the size to the maximum possible without significant changes. Jan