Ubuntu Natty, Dell Vostro 3750, Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) With second monitor connected via VGA 15:59:04 xander@xander-laptop:~> sudo lspci 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 00:16.0 Communication controller: Intel Corporation 6 Series Chipset Family MEI Controller #1 (rev 04) 00:1a.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) 00:1b.0 Audio device: Intel Corporation 6 Series Chipset Family High Definition Audio Controller (rev 05) 00:1c.0 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 1 (rev b5) 00:1c.2 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 3 (rev b5) 00:1c.4 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 5 (rev b5) 00:1c.5 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 6 (rev b5) 00:1d.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) 00:1f.0 ISA bridge: Intel Corporation HM67 Express Chipset Family LPC Controller (rev 05) 00:1f.2 SATA controller: Intel Corporation 6 Series Chipset Family 6 port SATA AHCI Controller (rev 05) 00:1f.3 SMBus: Intel Corporation 6 Series Chipset Family SMBus Controller (rev 05) 01:00.0 Network controller: Intel Corporation Centrino Wireless-N 1030 (rev 34) 02:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04) 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) 15:58:59 xander@xander-laptop:~> grep -i error /var/log/* | grep Hangcheck /var/log/kern.log:Nov 1 11:28:40 xander-laptop kernel: [330610.015135] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung /var/log/kern.log:Nov 1 13:25:03 xander-laptop kernel: [ 6795.543078] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung /var/log/syslog:Nov 1 11:28:40 xander-laptop kernel: [330610.015135] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung /var/log/syslog:Nov 1 13:25:03 xander-laptop kernel: [ 6795.543078] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung 16:00:33 xander@xander-laptop:~> sudo lshw -C display *-display description: VGA compatible controller product: 2nd Generation Core Processor Family Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:47 memory:d0000000-d03fffff memory:c0000000-cfffffff ioport:4000(size=64)