Unable to wake from Sleep (suspend to Ram)

O. Sinclair o.sinclair at gmail.com
Wed Apr 25 04:36:31 UTC 2012

On 25/04/12 03:19, Lindsay Mathieson wrote:
> I'm running 12.04 but probably not 12.04 specific - I've been trying to get
> sleep mode working for years with limited success. Basically I activate sleep
> mode (suspend to RAM) and that seems to work ok, everything switches off
> quickly. When I hit a key to wake up, the power light on the pc switches on,
> the hard drive seems to spin up, but the screen remains blank. Switching to
> console (Ctrl-Alt-F1) does not work. Power button off doesn't work.
> Interestingly the reset button gives me a hung machine, I don't even see a
> POST. I have to powercycle to get a boot back.
> Depending on the combination of settings I try, sometimes I get 3 beeps from
> the PC Speaker when attempting sleep.
> I've tried:
> - acpi_sleep=S3_bios
> - acpi_sleep=S3_mode
> Blacklisting intel_agp
> Physically disconnecting my DVD drive - it seemed to be spinning up and down.
> Uninstalling the NVidia driver and reverting to nouveau.
> Switching to the Onboard Video (Intel i5 Gen2 - HD3000 I think).
> System:
> Intel i5 2500 (4 cores)
> 8 GB ram
> Kubuntu 12.04 64 bit
> Billion USB Wireless Adapter
> logitech USB Keyboard and Mouse
> LG Widesreen LCD
> Any suggestions?
Check out tux-on-ice, there is a ppa with modified kernels for that. For 
me it works better than "vanilla" kernels


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