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Am 30.12.2010 schrieb "Aidan Wong <awong@xxxxxxx>":
> Hi Dietmar,
>
> Thanks for replying
>
> The user seems to be using X which I'm not even using. The user apparently
> uses a newer version of Xen than I do, but prior to posting my problem, I've
> used a PVOPS kernel and Xen version 3.4.3 and version 4.0.1 directly from
> Xen. I restarted from scratch and now use the CentOS / RH built Xen kernel
> and Xen 3.1.2 which is also RH maintained.
> I tried disabing "Intel Virtualization Technology" (which is Vt-d, I
> think...) in my BIOS setting but that didn't work, I'm still getting the
> scrolling colorful garbage on the Dom0 console.
OK, then your problem seems to be another one because the mentioned problem
was only seen with Vt-d enabled - the real cause was a buggy bios and a
workaround was done in the hypervisor.
>
> I'd like to try to patch my CentOS Dom0 Xen kernel but exactly sure how, can
> you provide some pointers?
Maybe you can try not to use a graphics mode for dom0 console. I mean, try to add
vga=ask in the boot line (grub.conf) and select an ascii mode.
Dietmar.
>
>
> Thank you
>
>
> On Tue, Dec 28, 2010 at 10:29 PM, Dietmar Hahn
> <dietmar.hahn@xxxxxxxxxxxxxx>wrote:
>
> > Hi Aidan,
> >
> > Am 29.12.2010 schrieb "Aidan Wong <awong@xxxxxxx>":
> >
> > > Hi,
> >
> > >
> >
> > > I just install xen and kernel-xen version 2.6.18-194.26.1.el5xen, booting
> >
> > > into the xen kernel dom0 shows me continous colorful scrambling and
> >
> > > scrolling.
> >
> > > I can ssh to dom0 and get correct display but the dom0 console is where
> > it
> >
> > > shows the colorful garbage scrolling.
> >
> > > i have the Supermicro X7DC motherboard with a XGI Z9 graphics card.
> >
> > > GUI is not installed and I don't have the rhgb parameter in my
> > grub.conf.
> >
> > > My grub.conf is plain and unmodified.
> >
> > >
> >
> > > #boot=/dev/md0
> >
> > > default=0
> >
> > > timeout=5
> >
> > > splashimage=(hd0,0)/grub/splash.xpm.gz
> >
> > > hiddenmenu
> >
> > > title CentOS (2.6.18-194.26.1.el5xen)
> >
> > > root (hd0,0)
> >
> > > kernel /xen.gz-2.6.18-194.26.1.el5
> >
> > > module /vmlinuz-2.6.18-194.26.1.el5xen ro root=/dev/VG_ROOT/LV_ROOT
> >
> > > module /initrd-2.6.18-194.26.1.el5xen.img
> >
> > > title CentOS (2.6.18-194.26.1.el5)
> >
> > > root (hd0,0)
> >
> > > kernel /vmlinuz-2.6.18-194.26.1.el5 ro root=/dev/VG_ROOT/LV_ROOT
> >
> > > initrd /initrd-2.6.18-194.26.1.el5.img
> >
> > > title CentOS (2.6.18-194.el5)
> >
> > > root (hd0,0)
> >
> > > kernel /vmlinuz-2.6.18-194.el5 ro root=/dev/VG_ROOT/LV_ROOT
> >
> > > initrd /initrd-2.6.18-194.el5.img
> >
> > >
> >
> > >
> >
> > > Tried adding the "vga=<vesa mode>" parameter in grub for the Xen kernel,
> > but
> >
> > > that didn't work.
> >
> > >
> >
> > > I also ran into this thread
> >
> > > http://lists.xensource.com/archives/html/xen-api/2010-06/msg00015.html
> >
> > > But that didn¹t help.
> >
> > >
> >
> > > Can someone help?
> >
> > There was a discussion on xen-devel with a similar problem:
> >
> > http://lists.xensource.com/archives/html/xen-devel/2010-09/msg01112.html
> >
> > Perhaps this helps?
> >
> > Dietmar.
> >
> > >
> >
> > > Thank you
>
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