Opened 7 years ago

Last modified 6 years ago

#9194 new bug

Compaq NC8000 boots ok but backlight is off -> black screen

Reported by: pmenagie Owned by: euan
Priority: normal Milestone: R1
Component: Drivers/Graphics/radeon Version: R1/alpha4.1
Keywords: ati radeon Cc:
Blocked By: Blocking:
Has a Patch: no Platform: All

Description

This laptop has a ati mobility 9600 graphics. If I look closely I can see HAIKU is on the screen, but without backlight all is black. This happens on alpha 4 and 4.1. At first I had performed an update over the current pre-alpha release. Secondly I did a fresh install but the results are the same.

Change History (4)

comment:1 Changed 7 years ago by umccullough

Is display backlight actually a function of the video driver, or ACPI?

comment:2 Changed 6 years ago by peterm1561

I installed the latest nightly build hoping that my issues with the back-light would have been fixed (I wasn't sure the driver was the culprit) and much to my surprise...it works. I checked to see if the radeon driver/accelerant is used instead of vesa, and yes :-)

I'm really curious to know what caused this problem.

comment:3 Changed 6 years ago by anevilyak

Would you be able to try before and after hrev45015?

comment:4 Changed 6 years ago by peterm1561

I tried 45012 but this version boots ok. After that I tried hrev44981 and this one is also ok. I tried the alpha4.1 again and bingo...black screen.

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