[Bug 95741] Broadwell graphics on Dell XPS13 (early 2015) loses horizontal sync on shift to tty console

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=95741

--- Comment #30 from W Unruh <unruh at physics.ubc.ca> ---
I probably do not understand what what ips does, but it seems strange that for
me the problem occurs when the terminal display is activated from X. I would
think that the terminal ( just white text on a black background) would have a
much lower pixel rate than a full fledged X display. Also the terminal works
fine before enabling X. It is only when switching out of X that this "loss of
Hsync" occurs. I did not see any flickering in X, which seemed to be the
problem reported in [1].
Also, this bug seems to have been introduced in 3.18, is not there in 3.19 and
resurfaces in 4.0 (but then the i915 thread thread seems to have skipped 3.19.)
It would be great if work were put into this since it is affecting lots of
people.
Note the resolution of the screen I was working with was HD (1.9Kx1K), not the
super high resolutions.(4Kx2K)

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