1335247 - REI.com magnifier causes display to flicker on and off

Status: NEW

(Core :: Graphics, defect, P3)

Description

[Richard Newman [:rnewman]]

This is a fun one. (Perhaps related to Bug 1114765?)

MacBook Pro Retina 13", early 2015. 10.11.6. Intel Iris 6100 graphics. Nightly 2017-01-30.

Connected via a mini-DisplayPort cable (I think; I lose track of all of these identical connectors!) to a Dell 4K display.

Mousing over a product image on REI.com causes the external display to turn off briefly. See the video:

https://www.youtube.com/watch?v=E1E38f1aVBs

Comment 1

[Richard Newman [:rnewman]]

Attachment: Capture from Apple's OpenGL Driver Monitor during a flicker

Comment 2

[Richard Newman [:rnewman]]

One system console message during this:

2017-01-30 4:10:06.278 PM WindowServer[192]: send_datagram_available_ping: pid 367 failed to act on a ping it dequeued before timing out.

367 is… softwareupdated, which is a bit odd. But this happens each time.

Comment 3

[Richard Newman [:rnewman]]

Still affects Nightly 55, now on Mac 10.12.4.