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

[sanjay kushwaha <sanjay.kushwaha@xxxxxxxxx>]

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).

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
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