On 2015-11-11 16:50, Nico Huber wrote:
Hi,
On 11.11.2015 00:49, Patrick 'P. J.' McDermott wrote:
I've been looking into S3 resume on GM45 mainboards, which often fails in rather interesting ways.
Well, the S3 support wasn't really tested during GM45 development. Maybe it's just plainly broken. My development system at work (roda/rk9) doesn't resume because of another problem (but didn't fail raminit on the resume path in 3 of 3 tries). So it will need some work before I can test this.
Ah, OK. What kind of other problem? In addition to the raminit reset, I've seen resume fail by an SMM hang and in other ways.
Thanks for taking the time to test on different systems and looking into this. Can you try to find out which processors (model, stepping) and northbridge stepping was used? Also did you use the latest processor microcode?
I've seen S3 resume problems occur on X200 units with CPUID 10676 (microcode revision 0x6, stepping M0). I've also seen reports of problems on X200 units with CPUID 1067A (microcode revision 0xA, stepping R0, the latest available stepping/microcode).
I have a T400 with CPUID 1067A (again, latest available microcode) that fails to resume, but I've also seen a report of a T400 on which S3 resume works.
On all tested systems, the northbridge stepping is B3, the only available stepping for this northbridge.
The logs in my previous message are from a couple of X200 units with 10676 and a T400 with 1067A.