Dne 13.7.2016 v 12:48 Pavel Machek napsal(a) >>>> Are there any updates on the status of this issue? >>>> >>>> The current bugzilla report [1] marks this as a power management >>>> issue. However, many reports indicate that it would only freeze >>>> when running X, so it's not completely clear if it's related to >>>> the gfx driver too. >>> Does >>> >>> "intel_idle.max_cstate=1" >>> >>> fix it for you? >> Yes, it does. >>> If you feel it is X-only problem, you may want to provide details >>> about your graphics subsystem (DRM enabled? framebuffer only?) and >>> probably cc. >> It's not X-only problem. Happens even in console mode, which is KMS >> switched during boot though. >>> ...actually... you may want to verify if it happens in unaccelerated X. >> As it happens even in console mode, is this relevant test? > No, no need to test with X. > > Would it be possible to test in good old VGA mode? For past few days I updated to 4.6.3 kernel and tested with X and without X, in console mode and no KMS. My machine is way more stable than with previous 4.5.* and 4.4.* kernels I tried.
With 4.6.3 kernel and X running, I had only one freeze during Firefox session with video playback. For the rest of two days of testing, no hang. I was not able to hang the machine during another 2 days of testing with 4.6.3 kernel and console mode with KMS disabled. It's fair to say, that stress testing of GFX is quite limited when running in console mode :-). I tried hard with mplayer with libcaca and with repeated kernel compilation task. No hang occured. My conclussion is that 4.6.3 is surelly a huge improvement, compared to 4.5 and 4.4. kernels regarding Bay trail stability issue. Michal Feix
