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Ivybridge HD4000 graphics system reports modesettnot working with X11

Submitted by Bob McGuire

Assigned to Xorg Project Team

Link to original bug (#107162)

Description

Since about kernel version 4.15 - 4.16 something my IVY bridge machine has failed to display anything on the display with X and gnome running. everything is running X0rg says modesetting is not working.

The logs would say modeset failed. After a few attempts this modeset work work and I could get output on the display. But I had to use a worked arounding. I managed to work around this by enabling FB_EMULATION or whateve the i915 code that creates a framebuffer until kernel version 4.17.5. Since this version, nothing can get modesetting to work on this machine.

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