[haiku-bugs] Re: [Haiku] #2675: Backlight turned off on Radeon Mobility X600

  • From: "euan" <trac@xxxxxxxxxxxx>
  • Date: Mon, 13 Jun 2011 21:59:00 -0000

#2675: Backlight turned off on Radeon Mobility X600
---------------------------------------+---------------------------
   Reporter:  leavengood               |      Owner:  euan
       Type:  bug                      |     Status:  in-progress
   Priority:  normal                   |  Milestone:  R1
  Component:  Drivers/Graphics/radeon  |    Version:  R1/pre-alpha1
 Resolution:                           |   Keywords:
 Blocked By:                           |   Blocking:  7662
Has a Patch:  0                        |   Platform:  All
---------------------------------------+---------------------------

Comment (by euan):

 after the radeon hd docs where release a lot of info about the past cards
 could be deduced.  One place in particular to look is the BIOS_x_SCRATCH
 (x = 0 to 8).

 Have a look at RADEONInitBIOSRegisters() in xf86-video-ati here:

 http://cgit.freedesktop.org/xorg/driver/xf86-video-
 ati/tree/src/radeon_driver.c

 I'm sure I made patches, or versions that used the latest info on the
 scratch regs, but not sure if I got feedback or not.

 I still don't rule out ACPI integration in the laptop though either.
 Though I never gained the knowledge to be able to rule it out or not.

-- 
Ticket URL: <http://dev.haiku-os.org/ticket/2675#comment:7>
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