Xen users - Nov 2011 - Sabayon hvm domU problems: the Windows Manager doesn't start

Hello,

I set up a Sabayon Linux domU as hvm guest and I completed the installation
successfully. The problem is that when KDE is going to start, I see a
blank screen.
I use vncviewer but I don''t think this problem is related to vnc.
Then I''ve read the minimal system requirements and I have seen this:

1) i686 Processor (starting from AMD K6 and Intel Pentium II)
2) 512 MB of RAM (1 GB suggested)
3) an OpenGL-capable 3D graphics card (mostly NVIDIA, ATI, Intel, VIA)
4) a DDC-capable Monitor
5) mouse and keyboard
6) Internet to the Internet (not obligatorily, but recommended)
7) Minimum of 12 GB of free hard disk space for KDE and GNOME. Minimum
of 5 GB for the others, but note that this will not let you do much. I
recommend at least 40 GB for KDE or GNOME installations, and 15 GB for
the others.

As regard 1,2,4,5,6,7 I think I am OK (apart that I created a 8GB hard
disk instead of 12GB).
I think the issue could be related to the point 3. Is it possible to
satisfy the requirement 3 for a hvm domU guest?

--
Flavio

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On Fri, Nov 4, 2011 at 3:33 PM, Flavio <fbcyborg@gmail.com>
wrote:
> Hello,
>
> I set up a Sabayon Linux domU as hvm guest and I completed the installation
> successfully. The problem is that when KDE is going to start, I see a
> blank screen.
> 3) an OpenGL-capable 3D graphics card (mostly NVIDIA, ATI, Intel, VIA)
duh :P
> I think the issue could be related to the point 3. Is it possible to
> satisfy the requirement 3 for a hvm domU guest?
Nope :)

Well, at least not without GPU passsthrough (which is ... complicated
and requires special hardware support)

Generally virtualization products don''t support 3D graphics. There are
some exceptions (e.g. virtualbox, vmware workstation), but most
(inlcuding Xen) don''t support it. If you want a GUI on virtual
environment you need a desktop environment which can run fine even
without 3D support

I don''t know about KDE, but both gnome and unity has fallback/2D
modes, which should work either in "console" (xen-vfb) or remote
(Xrdp, NX, VNC, whatever). Using 2D desktop environment should work.

-- 
Fajar

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On 4 November 2011 09:43, Fajar A. Nugraha <list@fajar.net>
wrote:
> Well, at least not without GPU passsthrough (which is ... complicated
> and requires special hardware support)
>
> Generally virtualization products don''t support 3D graphics. There
are
> some exceptions (e.g. virtualbox, vmware workstation), but most
> (inlcuding Xen) don''t support it. If you want a GUI on virtual
> environment you need a desktop environment which can run fine even
> without 3D support
>
> I don''t know about KDE, but both gnome and unity has fallback/2D
> modes, which should work either in "console" (xen-vfb) or remote
> (Xrdp, NX, VNC, whatever). Using 2D desktop environment should work.
Thanks a lot Fajar,

even KDE can work in 2D mode. I think this requirement is asked becouse
of Compiz, which could be set up as default in the windows manager.

Anyway, I''ve made another test. I''ve put sdl=1 and opengl=1 in
the domU
configuration file and I have seen at least the splash screen of KDE. Despite
that, KDE doesn''t start as well. Of course it''s due to what
you''ve explained.

Thank you very much,

-- 
Flavio

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