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[Qemu-devel] Re: Question about KVM and PC speaker
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] Re: Question about KVM and PC speaker |
Date: |
Thu, 23 Apr 2009 09:45:17 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
Simon Bienlein wrote:
> Hello everybody,
>
> I do my first Stepps with KVM on my Debian Lenny system. I recognized
> the following:
>
> If I boot the Debian Install CD on the wirtsystem a audible signal is
> played if the boot menu appears. If I boot the CD in the virtual KVM
> machine, the audible bell is not played.
>
> I hear the beep if I am in the bash of the wirtsystem and press the
> backspace key on the start of the line. The PC speaker works therefore.
>
> How can I configure KVM so that the PC speaker also works in the VM?
> Supports the BIOS PC Speaker beeps?
Nope, not yet. Neither QEMU nor KVM (with its in-kernel handling of the
involved timer chip) translates the guest's speaker settings into
anything audible. But that should be feasible.
For KVM's in-kernel handling some new interface would have to be
established, for QEMU it should even be simpler. It just takes someone
with time and motivation to dig into this.
>
> The environment variable QEMU_AUDIO_DRV=alsa is set and I run KVM with
> the option -soundhw all.
You may succeed with this approach when redirecting the guest's console
beep to the sound card of your virtual machine. There is
http://www.carcosa.net/jason/software/beep which claims to do that, but
I never tried.
>
> Thank you very much for your help in advance.
>
> Simon
> Website: <http://www.linux-fuer-blinde.de>
>
Jan
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- [Qemu-devel] Question about KVM and PC speaker, Simon Bienlein, 2009/04/22
- [Qemu-devel] Re: Question about KVM and PC speaker,
Jan Kiszka <=
- Re: [Qemu-devel] Re: Question about KVM and PC speaker, Samuel Thibault, 2009/04/23
- Re: [Qemu-devel] Re: Question about KVM and PC speaker, Jan Kiszka, 2009/04/23
- Re: [Qemu-devel] Re: Question about KVM and PC speaker, Samuel Thibault, 2009/04/23
- Re: [Qemu-devel] Re: Question about KVM and PC speaker, Jan Kiszka, 2009/04/23
- Re: [Qemu-devel] Re: Question about KVM and PC speaker, Avi Kivity, 2009/04/23
- Re: [Qemu-devel] Re: Question about KVM and PC speaker, Jan Kiszka, 2009/04/23
- Re: [Qemu-devel] Re: Question about KVM and PC speaker, Avi Kivity, 2009/04/23
- Re: [Qemu-devel] Re: Question about KVM and PC speaker, Jan Kiszka, 2009/04/23