[BUG] Blinking display with 4.6-rc*

Steinar H. Gunderson
2016-04-23T09:51:40Z

Hi,

I have a Lenovo X240, which has Haswell integrated graphics. On upgrade from
4.5.0 to 4.6-rc1, I noticed an extremely irritating issue; about every
minute, the display shows black for a brief moment (perhaps one or two
frames), then reverts back to the correct display. There are no other ill
effects that I can see, in particular nothing in dmesg. I tried with 4.6-rc4,
and it has the same issue.

Do I need to run a full bisect to figure out what's causing this, or does it
ring a bell with someone?

/* Steinar */
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