Comment 16 for bug 596080

Andrew Petro (microcline) wrote :

I believe I also experience this issue on my Dell Latitude E6510.

My internal IT support at my company had this to say:

"I seem to have found the real fix to the suspend/resume problem ... on Dell Latitude E6510 runnning Ubuntu 10.10 (Maverick Meerkat). Apparently some changes in the ACPI code in the 2.6.35 kernel are to blame and are causing this issue across several platforms. This should be fixed permanently in the 2.6.36 kernel. Until then, there is a workaround that has been added to the 2.6.35 kernel.

Assuming you are using Grub2 as your bootloader, go edit /etc/default/grub as root and add "acpi_sleep=nonvs" to the end of the line for the GRUB_CMDLINE_LINUX_DEFAULT variable. Then run "sudo update-grub" to install this into your boot configuration."

I did edit GRUB_CMDLINE_LINUX_DEFAULT in the described way and so far I no longer experience the intermittent fails-to-re-light-screen-after-suspend issue.

Posting my experience here at the direction of Canonical's consumer tech support. I hope this helps to resolve this Ubuntu bug.