Re: pvops Dom0 graphics doesnt work with Intel i915

[sanjay kushwaha <sanjay.kushwaha@gmail.com>]

[-- Attachment #1.1: Type: text/plain, Size: 12718 bytes --]

Hi Allen,
So this may not be the correct forum to ask this question but I am wondering
if a similar workaround has been developed for VT-d in Linux kernel for this
problem.
I am trying to boot pvops Linux as Native Linux (2.6.32.21) with VT-d on
Lenovo T410 and Intel graphics is not working.

Can someone please let me know?

Thanks,
Sanjay

On Thu, Oct 7, 2010 at 3:44 PM, sanjay kushwaha
<sanjay.kushwaha@gmail.com>wrote:

> Hi Allen,
> Indeed I needed this workaround. Now graphics works fine with VT-d with
> this xen tree.
>
> Thanks,
> Sanjay
>
>
> On Thu, Oct 7, 2010 at 3:05 PM, Kay, Allen M <allen.m.kay@intel.com>wrote:
>
>>  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@lists.xensource.com [mailto:
>> xen-devel-bounces@lists.xensource.com] *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@oracle.com> 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@oracle.com> 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@citrix.com>
>> > > > 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@iki.fi>
>> 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@gmail.com> 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@oracle.com> 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@gmail.com>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@goop.org>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@lists.xensource.com
>> > > > > >        > >> > [6]http://lists.xensource.com/xen-devel
>> > > > > >        > >>
>> > > > > >        > >>
>> > > > > >        > >
>> > > > > >
>> > > > > >        > _______________________________________________
>> > > > > >        > Xen-devel mailing list
>> > > > > >        > [7]Xen-devel@lists.xensource.com
>> > > > > >        > [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@gmail.com
>> > > > > >    2. mailto:konrad.wilk@oracle.com
>> > > > > >    3. mailto:sanjay.kushwaha@gmail.com
>> > > > > >    4. mailto:jeremy@goop.org
>> > > > > >    5. mailto:Xen-devel@lists.xensource.com
>> > > > > >    6. http://lists.xensource.com/xen-devel
>> > > > > >    7. mailto:Xen-devel@lists.xensource.com
>> > > > > >    8. http://lists.xensource.com/xen-devel
>> > > > >
>> > > > > > _______________________________________________
>> > > > > > Xen-devel mailing list
>> > > > > > Xen-devel@lists.xensource.com
>> > > > > > 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@lists.xensource.com
>> > http://lists.xensource.com/xen-devel
>>
>>
>>
>>
>> --
>> ----------------------
>> Dr. Sanjay Kumar
>> Research Scientist
>> Intel Corporation
>>
>
>
>
> --
> ----------------------
> Dr. Sanjay Kumar
> Research Scientist
> Intel Corporation
>



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

[-- Attachment #1.2: Type: text/html, Size: 20920 bytes --]

[-- Attachment #2: Type: text/plain, Size: 138 bytes --]

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