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Re: [Qemu-devel] Framebuffer corruption in QEMU or Linux's cirrus driver


From: Laszlo Ersek
Subject: Re: [Qemu-devel] Framebuffer corruption in QEMU or Linux's cirrus driver
Date: Thu, 03 Apr 2014 13:18:20 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0

On 04/02/14 00:09, Andy Lutomirski wrote:
> Running:
> 
> ./virtme-run --installed-kernel
> 
> from this virtme commit:
> 
> https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git/commit/?id=2b409a086d15b7a878c7d5204b1f44a6564a341f
> 
> results in a bunch of missing lines of text once bootup finishes.
> Pressing enter a few times gradually fixes it.
> 
> I don't know whether this is a qemu bug or a Linux bug.
> 
> I'm seeing this on Fedora's 3.13.7 kernel and on a fairly recent
> 3.14-rc kernel.  For the latter, cirrus is built-in (not a module),
> I'm running:
> 
> virtme-run --kimg arch/x86/boot/bzImage
> 
> and I see more profound corruption.

I'm seeing this on:
- qemu: qemu-kvm-1.5.3-55.el7.x86_64
- guest: 3.13.6-100.fc19.x86_64

Screenshots: http://people.redhat.com/~lersek/cirrusdrmfb/

Thanks
Laszlo



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