[Bug 160763] Re: Acer Aspire 5720 hangs on second resume from suspend, i.e. suspends only once [BIOS PROBLEM]

[Milan Bouchet-Valat]

Cool, much thanks Maxim!

The bug should not be closed though, since it's not fixed in Maverick
yet. I've also opened a task for Lucid since the patch could be
backported to benefit Acer users.

For kernel developers, here's the commit message:

ACPI: Store NVS state even when entering suspend to RAM

https://bugzilla.kernel.org/show_bug.cgi?id=13931 describes a bug where
a system fails to successfully resume after the second suspend. Maxim
Levitsky discovered that this could be rectified by forcibly saving
and restoring the ACPI non-volatile state. The spec indicates that this
is only required for S4, but testing the behaviour of Windows by adding
an ACPI NVS region to qemu's e820 map and registering a custom memory
read/write handler reveals that it's saved and restored even over suspend
to RAM. We should mimic that behaviour to avoid other broken platforms.

** Changed in: linux (Ubuntu)
       Status: Fix Released => Triaged

** Changed in: linux (Ubuntu)
     Assignee: Maxim Levitsky (maximlevitsky) => (unassigned)

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Acer Aspire 5720 hangs on second resume from suspend, i.e. suspends only once [BIOS PROBLEM]
https://bugs.launchpad.net/bugs/160763
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