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xen-devel
Re: [Xen-devel] pvops Dom0 graphics doesnt work with Intel i915
Thanks Allen,
Looking at this patch, I realized that I dont need the patch. using intel_iommu=igfx_off on kernel command line gets the same job done in this kernel.
Thanks,
Sanjay
On Sat, Nov 6, 2010 at 11:22 PM, Kay, Allen M <allen.m.kay@xxxxxxxxx> wrote:
Hi Sanjay,
The fix in Xen was derived from a similar fix in Linux kernel below.
It is already part of the latest Linux kernel. Since it was checked in August,
it is not in 2.6.32.21 pvops kernel you are using.
https://patchwork.kernel.org/patch/132771/
Allen
From: sanjay kushwaha
[mailto:sanjay.kushwaha@xxxxxxxxx]
Sent: Saturday, November 06, 2010 10:22 AM
To: Kay, Allen M
Cc: Konrad Rzeszutek Wilk; Jeremy Fitzhardinge; xen-devel
Subject: Re: [Xen-devel] pvops Dom0 graphics doesnt work with Intel i915
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@xxxxxxxxx>
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@xxxxxxxxx>
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
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
--
----------------------
Dr. Sanjay Kumar
Research Scientist
Intel Corporation
--
----------------------
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
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