I have an Acer Chromebook 13 on which I have installed Ubuntu. Today, something strange happened. Every other column of pixels has turned slightly darker, and the screen has gained a slightly pink or magenta hue. One moment the screen was fine, then it flashed for a second as described above, then it was normal for a second, then it became permanently stuck as described above.
More interestingly, over the last few hours it seems images have started to burn into the screen (such as the unity launcher bar and chrome header) in very short time. In the 15 minutes I took to write this, there is already noticeable screen burn from superuser.com's header and the "how to format" box on the right. It is definitely a hardware problem because the alternating columns and burn-in are visible during the boot screen.
It's hard to capture with a camera, but here's my best try:
The lines seems to effect saturated hues, but not shades of grey or white. The green pedal seems less affected, but brighter greens are affected. The columns at the borders between cyan&blue and red&yellow is especially noticeable. The screen burn is somewhat noticeable in the last picture (set screen to show #777777).
I'm not too worried about losing this computer, but the symptoms are very strange, unlike anything I was able to find online, so I'm curious as to what happened here.