linux-image-2.6.33-020633-generic_2.6.33-020633_amd64 (Mainline Ubuntu) works perfectly with acpi_sleep=sci_force_enable for me on my w510.
linux-image- 2.6.33- 020633- generic_ 2.6.33- 020633_ amd64 (Mainline Ubuntu) works perfectly with acpi_sleep= sci_force_ enable for me on my w510.