thinkpad x200 X.server not work with gm4500 graphics - Kernel

This is a discussion on thinkpad x200 X.server not work with gm4500 graphics - Kernel ; deal, My thinkpad x200's X.server can not startup on the kernel 2.6.28, 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 ...

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Thread: thinkpad x200 X.server not work with gm4500 graphics

  1. thinkpad x200 X.server not work with gm4500 graphics

    deal,

    My thinkpad x200's X.server can not startup on the kernel 2.6.28,
    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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  2. Re: thinkpad x200 X.server not work with gm4500 graphics

    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)?

    Thanks.

    > 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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  3. Re: thinkpad x200 X.server not work with gm4500 graphics

    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.

    Dave.

    > > Thanks.

    >
    > > 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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