How to get suspend/resume work on IBM T60?

Bruce Cran bruce at
Tue Nov 16 14:32:13 UTC 2010

On Tuesday 16 November 2010 14:12:23 Bruce Cran wrote:

> According to whitelist.c in the linux suspend package, the T60 needs "s3
> bios" and "s3 mode" for the video to work on resume, which I don't think
> has been implemented.

Actually it looks like "s3 bios" is just a POST of the video card when 
resuming - you might want to try setting the sysctl hw.acpi.reset_video to 1 
and see if that helps. If you're running amd64 and get a reboot with 
reset_video=1 then it might be worth commenting out the "int 0x10" line in 
sys/amd64/acpica/acpi_wakecode.S because it assumes the video is up and 
running by that point - which on some system's it's not.

Bruce Cran

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