Cc's added, attached lspci output.

On 05/19/2009 08:38 PM, Niel Lambrechts wrote:
> I have a strange problem in that during a resume from hibernate my
> text console (or X) remains blank - that is, until I simultaneously
> press a keyboard key and touch the synaptic pad. It is not sufficient
> to press just one or the other, it needs to be done simultaneously and
> it resumes fine after doing this.

I have tried quite hard to overcome this issue. All of the following hibernation 
tests I tried involved booting into a text console, without ever starting X. 
With each test I still had a blank screen upon resume, and each time it was 
fully recoverable by pressing any keyboard key/synaptic pad touch combo.

1. Disabling a CPU core - NO CHANGE.
Based on a "multi-processor concurrency" fix mentioned on the web (Ubuntu bug 
#272307).

2. Upgrade BIOS to latest level - NO CHANGE.
BIOS 6FET70WW, released 04/17/2009.

3. Switching to ATI Mobility Radeon HD 3650 graphics card. NO CHANGE.
My Lenovo W500 has "switchable graphics" BIOS option, and I tried this test with 
both the integrated or the above-mentioned card without difference.
_This result seems quite interesting to me, as if it could be some type of bus 
related freeze where the keyboard/synaptic combo plays a role._

4. Disabling BIOS Options - NO CHANGE.
Enabling/disabling security chip features + TXT features.
Disabling fingerprint reader.
Disabling memory security feature.

5. Kernel options - NO CHANGE.
ACPI debugging - I enabled CONFIG_ACPI_DEBUG, but did not see any messages 
generated when I pressed a keyboard key + synaptic mousepad combo that recovers 
the console.
FIRMWARE_EDID - still testing this.

Any suggestions on anything else I could try would be most welcome...!

Thanks,
Niel