> I am attempting to debug a problem with suspend on a Panasonic
> Toughbook CF-C1 (Intel 2520M, circa 2011). Similar generation hardware
> to my Thinkpad X220, but with a PC-card slot. In all other respects to
> suspend (and maybe resume) it runs nornally. shutdown -p also works
> normally.
> The issue is that suspend does not initiate with apm -z (S3), apm -Z
> (S4), or apm -S (standby). The display goes off and network interfaces
> go down, but the system continues to run with increasing fan speed,
> until I do a forced power off.
...
I was able to solve this issue by disabling the tpm 'trusted Platform
Module' using config(8).
dmesg:
> tpm0 at acpi0 TPM_ 1.2 (TIS) addr 0x4e/0x2
It seems 'TIS' is not a supported TPM chip type, and disabling it in
the BIOS is not enough to make it go away.
UKC > disable tpm*
I include the fix here in case it helps someone else with
similar suspend/resume issues.
I never did find out how the display blanking is called on Suspend,
though.
--
Chris Billington
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