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    SubjectRe: i915: gpu wedged [was: mmotm 2010-01-15-15-34 uploaded]
    On Sat, 23 Jan 2010 13:56:05 +0100
    Jiri Slaby <jirislaby@gmail.com> wrote:

    > On 01/16/2010 12:34 AM, akpm@linux-foundation.org wrote:
    > > The mm-of-the-moment snapshot 2010-01-15-15-34 has been uploaded to
    >
    > So I've decided to switch to KMS on this kernel with
    > 00:02.0 VGA compatible controller [0300]: Intel Corporation 82G33/G31
    > Express Integrated Graphics Controller [8086:29c2] (rev 02) (prog-if 00
    > [VGA controller])
    > Subsystem: Intel Corporation 82G33/G31 Express Integrated
    > Graphics Controller [8086:29c2]
    > Flags: bus master, fast devsel, latency 0, IRQ 26
    > Memory at ffa80000 (32-bit, non-prefetchable) [size=512K]
    > I/O ports at ec00 [size=8]
    > Memory at d0000000 (32-bit, prefetchable) [size=256M]
    > Memory at ff900000 (32-bit, non-prefetchable) [size=1M]
    > Expansion ROM at <unassigned> [disabled]
    > Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
    > Capabilities: [d0] Power Management version 2
    > Kernel driver in use: i915
    >
    >
    > with this X driver:
    > (II) Module intel: vendor="X.Org Foundation"
    > compiled for 1.7.4, module version = 2.10.0
    > Module class: X.Org Video Driver
    > ABI class: X.Org Video Driver, version 6.0
    >
    >
    > on X.Org X Server 1.7.4 and after some time I get:
    > (WW) intel(0): i830_uxa_prepare_access: gtt bo map failed: Input/output
    > error
    > (EE) intel(0): Failed to submit batch buffer, expect rendering
    > corruption or even a frozen display: Input/output er
    > ror.
    > (WW) intel(0): i830_uxa_pixmap_swap_bo_with_image: bo map failed
    > (WW) intel(0): i830_uxa_prepare_access: gtt bo map failed: Input/output
    > error
    > (WW) intel(0): i830_uxa_prepare_access: gtt bo map failed: Input/output
    > error
    > (WW) intel(0): i830_uxa_prepare_access: gtt bo map failed: Input/output
    > error
    > (EE) intel(0): Failed to submit batch buffer, expect rendering
    > corruption or even a frozen display: Input/output er
    > ror.
    > (EE) intel(0): Failed to submit batch buffer, expect rendering
    > corruption or even a frozen display: Input/output er
    >
    >
    > and kernel says:
    > [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
    > render error detected, EIR: 0x00000000
    > [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5
    > (awaiting 153151 at 153150)
    > [drm:i915_gem_execbuffer] *ERROR* i915_gem_do_execbuffer returns -5
    >
    >
    > >From <debugfs>/dri/0/i915_wedged, the GPU is wedged.
    >

    umph. There isn't much I can do about that, really. Apart from
    fervently hoping that this known regression doesn't turn up in
    2.6.34-rc1.



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