Created attachment 174281 [details] my kernel configuration After updating to kernel 4.0.0, changing brightness via keyboard keys causes the screen to flash. It not flashing black and white, but instead when the brightness is high, it flashes to a low brightness before changing back. When the brightness is low, it flashes to a high brightness before changing back. Running weston causes parts of the screen to flash and tear black and white. The part that tears depends on where the mouse is; it usually tears everything under the mouse. This didn't happen on kernels 3.14 - 3.19 00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 12)
running xorg-server-1.16.4, mesa-10.3.7-r1, xf86-video-intel-2.99.917
We seem to have neglected this bug. Apologies. If the problem persists with latest kernels, please file a bug at the freedesktop.org bugzilla [1], referencing this bug. Thank you. [1] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel