Hello,
When I suspend (s2ram) my Acer 8930 laptop under both Ubuntu 10.4 and 12.4 same problem appears. Laptop can hibernate (s2disk) well, but suspend (s2ram) is not working. After suspend it freezes on wakeup and when I press Ctrl+Alt+F1 this text is being periodically printed out:

[4480.58016] ata1: irq_stat 0x00000040, connection status changed
[4505.402689] ata1: SError {DevExch}

[4523.58053] ata1: irq_stat 0x00000040, connection status changed
[4521.415321] ata1: SError {DevExch}

[4535.58853] ata2: irq_stat 0x00000040, connection status changed
[4585.458621] ata2: SError {DevExch}
...

and so on, only the number in Square brackets [] changes.

I tried to install uswsusp and hibernate packages from synaptic but no change,,
I also tried most of options of s2ram with no success.

Thanx