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[Marcello Romani <560433@xxxxxxxxxxxxxxxxxx>]

I have seen this bug several times on a brand new Core i3 540 HP system.

I see messages like these in the dmesg log:

[239983.083606] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
[239983.083616] render error detected, EIR: 0x00000000
[239983.083639] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 64239677 at 64239676)

When the GPU "hangs" I can still CTRL-ALT-F1 and login. Sometimes a
simple service gdm restart is enough to get me back to work, sometimes I
have to hard-reset the machine.

DIM data about the machine follows:

Handle 0x0001, DMI type 1, 27 bytes
System Information
        Manufacturer: Hewlett-Packard
        Product Name: HP Elite 7100 Microtower PC
        Version: xxx0204GRxxxxxxxx0
        Serial Number: CZC0366WYL
        UUID: 7885EB66-DABC-DF11-BC09-BDEB2F91D1F8
        Wake-up Type: Power Switch
        SKU Number: WU394EA#ABZ
        Family: 103C_53307F

CPU: Intel(R) Core(TM) i3 CPU         540  @ 3.07GHz 
RAM: 2x2GB modules.
OS: Ubuntu 10.04 x64.
Using CPU's integrated graphic processor.

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https://bugs.launchpad.net/bugs/560433

Title:
  [clarkdale] Xorg freeze