closing laptop lid during boot stops X from appearing
Bug #30949 reported by
Robert Collins
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu |
Invalid
|
Medium
|
Unassigned |
Bug Description
if I close my laptop lid (a Dell X1) during the boot sequence with usplash
visible, the backlight goes off. When X comes up (I can tell from the sound) the
backlight is still off. Doing a suspend to ram/resume cycle will often bring X
back, though I sometimes have to hit fn-brightness to get the backlight to come on.
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Dell BIOS bug. The same happens in Windows, but the Windows graphics driver
knows how to switch the backlight back on.
(You can test this by booting Windows, waiting until the 16 colour graphical
loading screen appears and cycling the lid. The backlight won't switch back on
until Windows loads the graphics driver.