Comment 10 for bug 573312

Same problem here, I am using Ubuntu 11.04 64 bit with an Intel chipset.

$ sudo lspci -s 00:02.0 -kvnn
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
 Subsystem: ASUSTeK Computer Inc. Device [1043:1652]
 Flags: bus master, fast devsel, latency 0, IRQ 44
 Memory at ddc00000 (64-bit, non-prefetchable) [size=4M]
 Memory at c0000000 (64-bit, prefetchable) [size=256M]
 I/O ports at e000 [size=64]
 Expansion ROM at <unassigned> [disabled]
 Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
 Capabilities: [d0] Power Management version 2
 Capabilities: [a4] PCI Advanced Features
 Kernel driver in use: i915
 Kernel modules: i915