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

Sanjay,

Have you tried the latest xen-unstable staging tree? It has a workaround for T410 VT-d graphics issue caused by Lenovo BIOS. This might be the workaround you need:

http://xenbits.xensource.com/staging/xen-unstable.hg?rev/4beee5779122

Allen

From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of sanjay kushwaha
Sent: Thursday, October 07, 2010 12:13 PM
To: Konrad Rzeszutek Wilk
Cc: Jeremy Fitzhardinge; xen-devel
Subject: Re: [Xen-devel] pvops Dom0 graphics doesnt work with Intel i915

Hi Konrad,
Unfortunately T410 doesnt have a serial port and neither does the docking station. I havent had any success with USB-to-Serial port dongles in the past. is there any way to get the serial port output?

Thanks,
Sanjay

On Thu, Oct 7, 2010 at 11:05 AM, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:

On Thu, Oct 07, 2010 at 10:36:34AM -0700, sanjay kushwaha wrote:
> Hi Konrad,
> I tried your tree. It created a 2.6.32.15 based pvops kernel but graphics
> with VT-d still doesn't work. when I give iommu=0 on xen kernel command line
> in grub menu, graphics works but with iommu=1 it doesnt work (The whole
> screen is garbage).

Are there any warnings/debug messages in the serial log? Please follow
the PVOPS Wiki on how to enable all the debug options.

>
>
> On Wed, Oct 6, 2010 at 6:07 PM, Konrad Rzeszutek Wilk <
> konrad.wilk@xxxxxxxxxx> wrote:
>
> > On Wed, Oct 06, 2010 at 04:02:51PM -0700, sanjay kushwaha wrote:
> > > Thanks Pasi.
> > >
> > > Hi Konrad,
> > > Could you please let me know how to get these backported drivers as
> > > indicated by Pasi? This is the tree that I have.
> >
> > Just follow the Wiki. Oh, I need to update it.
> >
> > Here do this:
> >
> > git remote add konrad git://
> > git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git
> >
> > git pull konrad
> > git checkout konrad/devel/next.drm
> >
> > make
> >
> > >
> > > [evans@vwifi0 linux-2.6.32.x]$ git show
> > > commit b297cdac0373625d3cd0e6f2b393570dcf2edba6
> > > Merge: c6cfd01 64392f6
> > > Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
> > > Date: Mon Sep 13 14:27:24 2010 -0700
> > >
> > > Merge branch 'xen/next' into xen/next-2.6.32
> > >
> > > * xen/next:
> > > xen/netfront: Fix another potential race condition
> > > Revert "xen/netfront: default smartpoll to on"
> > >
> > > [evans@vwifi0 linux-2.6.32.x]$
> > >
> > >
> > > Thanks,
> > > Sanjay
> > >
> > > On Wed, Oct 6, 2010 at 1:12 PM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> > >
> > > > On Wed, Oct 06, 2010 at 10:50:57AM -0700, sanjay kushwaha wrote:
> > > > > 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).
> > > > >
> > > >
> > > > stable-2.6.33.x is not maintained, and you shouldn't use it.
> > > >
> > > > I think Konrad has a backport of the 2.6.34 drm/dri drivers
> > > > to stable-2.6.32.x somewhere.. that might help.
> > > >
> > > > http://wiki.xensource.com/xenwiki/XenPVOPSDRM
> > > >
> > > > -- Pasi
> > > >
> > > > > 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
> > > > > <[1]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
> > > > > <[2]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
> > > > > > <[3]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
> > > > > <[4]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
> > > > > > >> > [5]Xen-devel@xxxxxxxxxxxxxxxxxxx
> > > > > > >> > [6]http://lists.xensource.com/xen-devel
> > > > > > >>
> > > > > > >>
> > > > > > >
> > > > >
> > > > > > _______________________________________________
> > > > > > Xen-devel mailing list
> > > > > > [7]Xen-devel@xxxxxxxxxxxxxxxxxxx
> > > > > > [8]http://lists.xensource.com/xen-devel
> > > > >
> > > > > --
> > > > > ----------------------
> > > > > Dr. Sanjay Kumar
> > > > > Research Scientist
> > > > > Intel Corporation
> > > > >
> > > > > --
> > > > > ----------------------
> > > > > Dr. Sanjay Kumar
> > > > > Research Scientist
> > > > > Intel Corporation
> > > > >
> > > > > References
> > > > >
> > > > > Visible links
> > > > > 1. mailto:sanjay.kushwaha@xxxxxxxxx
> > > > > 2. mailto:konrad.wilk@xxxxxxxxxx
> > > > > 3. mailto:sanjay.kushwaha@xxxxxxxxx
> > > > > 4. mailto:jeremy@xxxxxxxx
> > > > > 5. mailto:Xen-devel@xxxxxxxxxxxxxxxxxxx
> > > > > 6. http://lists.xensource.com/xen-devel
> > > > > 7. mailto:Xen-devel@xxxxxxxxxxxxxxxxxxx
> > > > > 8. http://lists.xensource.com/xen-devel
> > > >
> > > > > _______________________________________________
> > > > > Xen-devel mailing list
> > > > > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > > > > http://lists.xensource.com/xen-devel
> > > >
> > > >
> > >
> > >
> > > --
> > > ----------------------
> > > Dr. Sanjay Kumar
> > > Research Scientist
> > > Intel Corporation
> >
>
>
>
> --
> ----------------------
> Dr. Sanjay Kumar
> Research Scientist
> Intel Corporation

> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel

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

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