From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ronny Hegewald Subject: no output on console when using 2.6.39 as dom0-kernel Date: Mon, 30 May 2011 19:18:27 +0000 Message-ID: <201105301918.27852.ronny.hegewald@online.de> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" 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: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org This topic was brought up before for the 2.6.38 kernel one month ago http://lists.xensource.com/archives/html/xen-devel/2011-04/msg01345.html In this thread it wasn't mentioned that upstream has some missing functionality for vga-console support (as far i have seen), so i assume that it should work. First my config: xen 4.1, 2.6.39 upstream linux-kernel, both 32-bit As soon the dom0-kernel is booting all output is cleared and the screen stays black, but the kernel is booting fine and i can login and start programs etc. When i start X in the dom0 the output on the screen appears normally. As soon i finish X, the screen turns black again. I added the following patch to the 2.6.39-er kernel, and the output on the console works fine for me on 32 and 64 bit dom0 kernel (the following patches are from Jeremys xen repository). commit 09e5e7caf4eac83c010ec3d209cc3dfbe1444ae0 Date: Mon Feb 9 12:05:54 2009 -0800 xen: allow enable use of VGA console on dom0 There was another patch to make the vga-console work with 32-bit-kernel. But for me it worked without it. commit adec49def29110b1748a861c8a2cee785a0d1052 Date: Mon Apr 27 13:03:13 2009 -0700 xen/i386: make sure initial VGA/ISA mappings are not overridden Or ss the console suppossed to work without this patches?