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Re: [Qemu-devel] vexpress: Framebuffer broken with KVM enabled

From: Jan Kiszka
Subject: Re: [Qemu-devel] vexpress: Framebuffer broken with KVM enabled
Date: Mon, 16 Feb 2015 11:04:10 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv: Gecko/20080226 SUSE/ Thunderbird/ Mnenhy/

On 2015-02-16 10:34, Alexander Spyridakis wrote:
> On Mon, Feb 16, 2015 at 2:43 PM, Jan Kiszka <address@hidden> wrote:
>> Hi,
>> next issue related to KVM/QEMU on the TK1: The guest image I'm running
>> gives proper framebuffer output when in emulation mode. Once KVM is
>> enabled, the screen is - at best - only initially updated. Sometimes I
>> see the famous tux images and a bit of the console texts, but usually it
>> stays black. Explanations?
> Hello Jan,
> If you want to force rendering, you can do something similar with the
> following hack:
> https://github.com/virtualopensystems/qemu/commit/64dd1b3e3a2353433edb9c63d00271f515bd06fb
> Of course expect performance to not be up to par.

Yep, confirmed - both that it works and that it's slow (better not try
this with SDL, exported via X...).


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