From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: kvm-userspace: VGA/VESA framebuffer broken Date: Fri, 05 Dec 2008 11:04:24 +0100 Message-ID: <4938FCA8.3010408@siemens.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Cc: kvm-devel To: Glauber Costa , Avi Kivity Return-path: Received: from lizzard.sbs.de ([194.138.37.39]:18362 "EHLO lizzard.sbs.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751468AbYLEKFQ (ORCPT ); Fri, 5 Dec 2008 05:05:16 -0500 Sender: kvm-owner@vger.kernel.org List-ID: Hi, latest kvm-userspace git 6892f63c18a526c7b54bbde2f59287787eabe1f8 appears to have a bug /wrt VGA/VESA modes. I just fired up one of my Linux test kernels which runs a framebuffer console in mode 0x317, but the display just contains garbage. Reverting to 82daa70a1d5bcad3a93150ffc5afbcb9e77361fb makes the problem disappear again. I also tried latest qemu with -enable-kvm against the same kernel modules, and the result is somehow better in that there is some output on the screen -- but it is horribly slow. Glauber, Avi, is this a problem of latest qemu upstream changes to the vga emulation or a merge issue? Jan -- Siemens AG, Corporate Technology, CT SE 26 Corporate Competence Center Embedded Linux