On 21.05.2015 16:19, Michael Gerlach wrote: > Okay here we go... > > I memtested the modules again and as expected no defect was found. So i > retried latest master today and quite unusually it just boots up. > Quite possibly you were just missing microcode update. > It does not reach payload-state still, but ram and frequency is detected > correctly. Fan is turning on and backlight gets activated but no output > is displayed. Besides it seems to die at unpredictable states. I > attached 3 different boot logs.. > > The only assumption could be a defect in some piece of hardware, but i > do not had any trouble with this x230 yet.. > > On the other hand _this_ build was compiled on the x230 itself, while > the other builds were compiled on a x201 with an identical bootstrapped > toolchain.. > > Any idea what possibly cause a similar behavior too? > It could be something with modules. They may have very unusual high-frequency characteristics. I didn't see it occur with code that we have currently but it remains a theoretical possibility. > > > Best regards, > > n3ph > > > On 05/20/15 23:45, David Hendricks wrote: >> >> >> On Wed, May 20, 2015 at 1:13 PM, Michael Gerlach <[email protected] >> <mailto:[email protected]>> wrote: >> >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> I forgot to mention that somehow the ram frequency is not detected >> correctly... >> >> PLL busy...done >> PLL didn't lock. Retrying at lower frequency >> PLL busy...done >> PLL didn't lock. Retrying at lower frequency >> PLL busy...done >> PLL didn't lock. Retrying at lower frequency >> PLL busy...done >> PLL didn't lock. Retrying at lower frequency >> No lock frequency found >> >> >> The SPD data should be read via SMBus long before PLL locking for the >> DRAM itself takes place. >> >> If you're unable to successfully read the SPDs, then it makes sense that >> later init would fail. >> >> -- >> David Hendricks (dhendrix) >> Systems Software Engineer, Google Inc. > > > >
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