Comment 6 for bug 1154457

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Po-Hsu Lin (cypressyew) wrote : Re: No display after Precise installation finished.

Hello Robert.
To your questions:
1. The screen is completely black after removing the proprietary driver and reboot, can't see a mouse pointer either.
2. Nothing shows up when switching VTs.
3. sudo service lightdm stop/start does not help.
4. Raising the backlight does not help.

However, external monitor works fine (that's how I test 2, 3 and 4)
In the Display Configuration utility, the Laptop screen is set to ON, but still nothing there.