Re: [Xen-devel] pvops Dom0 graphics doesnt work with Intel i915

[sanjay kushwaha <sanjay.kushwaha@xxxxxxxxx>]

Hi,
I have run into more problems now. This time with VT-d.
When I enable VT-d on this laptop, graphics again stops working in dom0 with pvops (linux 2.6.32.21). the screen starts showing garbage as soon as it switches into graphics mode.this happens when I boot the pvops kernel both as dom0 and native linux. However, when I try 2.6.33 based pvops kernel (stable-2.6.33.x) graphics seems to work fine with VT-d when running native but it doesnt work when running as Dom0. 

so now the problem is:

with stable-2.6.32.x: graphics works in Dom0 without Vt-d but not with VT-d (neither native nor Dom0).
with stable-2.6.33.x: graphics works with VT-d when running native but doesnt work when running as Dom0 (with or without VT-d).

I am experiencing this problem both with Lenovo T410, and Dell latitude E6410.
Has anybody experienced this problem?

Thanks,
Sanjay

On Fri, Oct 1, 2010 at 11:06 AM, sanjay kushwaha <sanjay.kushwaha@xxxxxxxxx> wrote:

havent tried stable-2.6.32.x on Radeon. It works with nomodeset and nopat options with stable-2.6.33.x branch.

On Fri, Oct 1, 2010 at 10:57 AM, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:

On Fri, Oct 01, 2010 at 10:06:48AM -0700, sanjay kushwaha wrote:
> When I dont use nomodeset option, dom0 boots fine X runs properly. So Fedora
> 13 (X86_64) distro with stable-2.6.32.x pvops kernel and xen-unstable works
> fine for i915 without nomodeset option.

Good to hear it works for you.

What about your radeon laptop?

>
> Thanks,
> Sanjay
>
> On Wed, Sep 29, 2010 at 3:56 PM, sanjay kushwaha
> <sanjay.kushwaha@xxxxxxxxx>wrote:
>
> > Hi Jeremy,
> > I switched to stable-2.6.32.x branch (which is 2.6.32.21 based) but I get
> > the same problem. Attached is the Xorg.0.log file when I booted with
> > nomodeset option.
> >
> > interestingly I did not see any kernel or driver crash messages in the
> > dmesg output. I do see these messages multiple times in /var/log/messages
> > *
> > Sep 29 15:40:32 vwifi0 gdm-binary[2244]: WARNING: GdmDisplay: display
> > lasted 0.048984 seconds
> > Sep 29 15:40:32 vwifi0 gdm-binary[2244]: WARNING: GdmLocalDisplayFactory:
> > maximum number of X display failures reached: check X server log for errors
> > *
> >
> > Thanks,
> > Sanjay
> >
> >
> > On Wed, Sep 29, 2010 at 11:57 AM, Jeremy Fitzhardinge <jeremy@xxxxxxxx>wrote:
> >
> >>  On 09/29/2010 11:12 AM, sanjay kushwaha wrote:
> >> > Hi Folks,
> >> > I am trying to boot latest xen-unstable on my laptop which has Intel
> >> > i915 graphics. PVOPS dom0 is 2.6.33.6 based (from branch
> >> > xen/stable-2.6.33.x)
> >>
> >> Don't use that branch; it isn't supported (in fact, I deleted it a while
> >> ago).  Use xen/stable-2.6.32.x for now.
> >>
> >>    J
> >>
> >> > and the distro is fedora 13 64-bit. The graphics doesnt come up and it
> >> > seems that i915 driver is crashing multiple times. If I boot in
> >> > run-level 3 (without X) dom0 boots fine.
> >> > I tried booting the dom0 kernel with nomodeset and nopat options
> >> > without any success. I searched on internet and found that multiple
> >> > people have reported similar problem but I could not find any solution.
> >> >
> >> > Has anybody found a solution or workaround to this problem?
> >> >
> >> > Thanks,
> >> > Sanjay
> >> >
> >> > PS: I have another laptop with same version of xen and pvops dom0 but
> >> > it has ATI radeon graphics card. This laptop boots dom0 with graphics
> >> > when I give nomodeset and nopat options (but fails if I dont give
> >> > either of those two options).
> >> >
> >> >
> >> >
> >> > _______________________________________________
> >> > Xen-devel mailing list
> >> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> >> > http://lists.xensource.com/xen-devel
> >>
> >>
> >

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--

----------------------
Dr. Sanjay Kumar
Research Scientist
Intel Corporation

-- 
----------------------
Dr. Sanjay Kumar
Research Scientist
Intel Corporation
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