From mboxrd@z Thu Jan 1 00:00:00 1970 From: Federico Beffa Subject: poor scrolling in qemu-kvm Date: Sat, 29 Nov 2014 17:23:19 +0100 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:41082) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xuknq-0006Lh-F1 for guix-devel@gnu.org; Sat, 29 Nov 2014 11:23:23 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Xuknp-0001mw-LL for guix-devel@gnu.org; Sat, 29 Nov 2014 11:23:22 -0500 Received: from mail-lb0-x229.google.com ([2a00:1450:4010:c04::229]:64685) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xuknp-0001mf-EQ for guix-devel@gnu.org; Sat, 29 Nov 2014 11:23:21 -0500 Received: by mail-lb0-f169.google.com with SMTP id p9so6732966lbv.14 for ; Sat, 29 Nov 2014 08:23:20 -0800 (PST) List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org To: Guix-devel Hi, I'm experimenting with the system in a qemu-kvm virtual machine. I created an image and successfully booted. However, scrolling of the display is unusably slow (e.g. displaying dmesg). The same problem is also visible in Ludovic's presentation http://audio-video.gnu.org/video/ghm2014/2014-08--courtes--were-building-the-gnu-system--ghm.webm at about min. 41. For comparison I run an ubuntu live cd (in text mode) and it performs very well. Have someone found out the reason for this poor performance in qemu-kvm and how to fix it? Thanks, Fede