Try these commands in a script, and check the print-out after resumed from S3: date sudo rtcwake -u -s 20 -m mem date
Thanks, -ning -----Original Message----- From: Ross Philipson [mailto:ross.philip...@gmail.com] Sent: Sunday, September 13, 2015 11:55 AM To: Sun, Ning; tboot-devel@lists.sourceforge.net Subject: Re: [tboot-devel] TBOOT 1.8.3 fails to resume from S3 On 09/11/2015 08:20 PM, Sun, Ning wrote: > Actually system resumes from S3 timely in tboot, but I/O (keyboard, mouse, > video) looks blocked for seconds in kernel, need more investigations... When S3 works, it is very timely but that is not the issue. I noted in another reply to this thread that when I remove these 2 change sets, the hang and subsequent system reset do not happen: http://hg.code.sf.net/p/tboot/code/rev/9040e000ccc4 http://hg.code.sf.net/p/tboot/code/rev/78713e04bdd9 It is very clearly related to these. I also stated that our suspicion is a buffer overflow in or related to this code: http://hg.code.sf.net/p/tboot/code/rev/9040e000ccc4#l3.62 We do have the logging level set to "all". Thanks Ross > > Thanks, > -ning > > -----Original Message----- > From: Ross Philipson [mailto:ross.philip...@gmail.com] > Sent: Thursday, September 10, 2015 12:36 PM > To: tboot-devel@lists.sourceforge.net > Subject: [tboot-devel] TBOOT 1.8.3 fails to resume from S3 > > I have been working on moving our project from TBOOT 1.7.0 to 1.8.3. I have > discovered that while our 1.7.0 version of TBOOT resumes from S3 just fine, > 1.8.3 does not. > > The most common symptom seems to be a hang just after TBOOT enters SMX mode. > The hang happens at different places so I don't think it is one specific > thing that TBOOT is doing to cause the hang. The hang can be short (on the > order of seconds) or longs (several minutes). Then suddenly the platform will > "unhang". It looks like the platform restarts quickly and goes right back in > to TBOOT but it is a little hard to tell exactly what happens right around > this point. We see this on every system we have tried it on. > > I have backed all our patches out and I still see the problem with a clean > 1.8.3 code base. I have also tried using TBOOT with a Debian Jessie install > and I get similar problems there. I have been comparing the code between the > version and have so far not found anything that makes a difference. > > Any help in this matter is appreciated. > Thanks > -- > Ross Philipson > > ---------------------------------------------------------------------- > -------- Monitor Your Dynamic Infrastructure at Any Scale With > Datadog! > Get real-time metrics from all of your servers, apps and tools in one place. > SourceForge users - Click here to start your Free Trial of Datadog now! > http://pubads.g.doubleclick.net/gampad/clk?id=241902991&iu=/4140 > _______________________________________________ > tboot-devel mailing list > tboot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/tboot-devel > -- Ross Philipson ------------------------------------------------------------------------------ _______________________________________________ tboot-devel mailing list tboot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tboot-devel
