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[Linus van Geuns <732304@xxxxxxxxxxxxxxxxxx>]

Hey,

I have a similar problem, see Bug #827531

I get this i915 hangcheck messages all the time:
[..][drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 2310953, at 2310953], missed IRQ?
[..]

My GPU is a Intel HD3000 (sany birdge, Core i7-2620M). Computer is a
Dell E6520 (Laptop).

$ dmesg
[..]
[    5.828173] i915 0000:00:02.0: irq 45 for MSI/MSI-X
[    5.828180] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[    5.828182] [drm] Driver supports precise vblank timestamp query.
[..]
[    5.984485] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[    6.076969] fbcon: inteldrmfb (fb0) is primary device
[    6.139589] Console: switching to colour frame buffer device 240x67
[    6.146270] fb0: inteldrmfb frame buffer device
[    6.146272] drm: registered panic notifier
[..]

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https://bugs.launchpad.net/bugs/732304

Title:
  [sandybridge-gt2+] Intel sandy-bridge dual-head GPU hang

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