On 29/06/16 18:31, Benjamin Herrenschmidt wrote: > On Wed, 2016-06-29 at 18:29 +1000, Benjamin Herrenschmidt wrote: >> On Wed, 2016-06-29 at 18:19 +1000, Alexey Kardashevskiy wrote: >>> This is rather a bugreport than actual revert but nevertheless. >>> >>> Since 27a4c827c34a I started noticing weird traces and quite often >>> I could not boot my test machine which is POWER8 box with AST video >>> or ATI video (video adapter type does not matter much although >>> is happens lot more often with the OpenPOWER machine which got >>> AST). >>> The system console is IPMI, not the actual video adapter. >>> >>> I bisected it to this: >>> >>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/com >>> mi >>> t/?id=27a4c827c34ac4256a190cc9d24607f953c1c459 >>> >>> For some reason which I do not understand, in >>> cursor_timer_handler(), >>> ops->cur_blink_jiffies is zero. Why can this happen? What is a >>> proper >>> fix? Thanks. >> >> Rings a bell... do you have fbcon: initialize blink interval before >> calling fb_set_par (f235f664a8afabccf863a5dee4777d2d7b676fda) ? > > Also check if you have: > > "fbcon: set a default value to blink interval" > (upstream ID a1e533ec07d583d01349ef13c0c965b8633e1b91). Yes, both. The problem I see appears from v4.4 till the very recent upstream kernel which I am debugging now and which is v4.7-rc5. -- Alexey -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
