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SubjectRe: thinkpad x200 X.server not work with gm4500 graphics
On Tue, Nov 11, 2008 at 08:50:39AM +0000, Dave Airlie wrote:
> On Tue, 11 Nov 2008, Andrew Morton wrote:
>
> > On Mon, 10 Nov 2008 23:25:18 +0800 arrow.ebd@gmail.com wrote:
> >
> > > deal,
> > >
> > > My thinkpad x200's X.server can not startup on the kernel 2.6.28,
> >
> > Were any earlier kernels OK? If so, which version(s)?
> What userspace Intel X driver is in use? afaik the GM45 wasn't supported
> until after we fixed this issue. Hacking around the size in the kernel
> won't actually fix the problem it actually makes a lot of things a lot
> worse.

My video-driver is "xf86-video-intel 2.3.2",
and "X.Org X Server 1.4.2", my distribution is Archlinux.
The patch's size is calculated with the dmesg from kernel-2.6.27.
My lap-top computer work now, but I'm not sure that, So is there any
specification about it or any suggestion, I'm glad to do some test on
it.

> >
> > > and dmesg will show as below:
> > > -->>--
> > > [drm] Initialized drm 1.1.0 20060810
> > > pci 0000:00:02.0: power state changed by ACPI to D0
> > > pci 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
> > > pci 0000:00:02.0: setting latency timer to 64
> > > [drm] Initialized i915 1.6.0 20060119 on minor 0
> > > pci 0000:00:02.0: pg_start == 0x00001f7f, intel_private.gtt_entries == 0x00001fff
> > > pci 0000:00:02.0: trying to insert into local/stolen memory
> > > --<<--
> > >
> > > Then, I change file "drivers/char/agp/intel-agp.c" as this:
> > > -->>--
> > > --diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
> > > index 9cf6e9b..e681f75 100644
> > > --- a/drivers/char/agp/intel-agp.c
> > > +++ b/drivers/char/agp/intel-agp.c
> > > @@ -528,7 +528,8 @@ static void intel_i830_init_gtt_entries(void)
> > > * stolen, ignore it in stolen gtt entries counting. However,
> > > * 4KB of the stolen memory doesn't get mapped to the GTT.
> > > */
> > > - size = 4;
> > > + /* size = 4; */
> > > + size = 516;
> > > } else {
> > > /* On previous hardware, the GTT size was just what was
> > > * required to map the aperture.
> > > --<<--
> > >
> > > And Xorg can start now.
> > > (1) Is it correct ?
> > > Because older kernel use size as "512 + 4" at here, but now use "size = 4".
> > > (2) How to deal with it if the patch is not right ?
> > > (3) How to get more specification about gm4500 ?
> >
> >


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