[haiku-bugs] Re: [Haiku] #8329: Laptops using lvds can't set video modes due to lack of special lvds edid read function.

  • From: "kallisti5" <trac@xxxxxxxxxxxx>
  • Date: Wed, 22 Feb 2012 16:20:25 -0000

#8329: Laptops using lvds can't set video modes due to lack of special lvds edid
read function.
-------------------------------------+-------------------------------------
   Reporter:  kallisti5              |      Owner:  kallisti5
       Type:  bug                    |     Status:  assigned
   Priority:  blocker                |  Milestone:  R1/alpha4
  Component:                         |    Version:  R1/Development
  Drivers/Graphics/radeon_hd         |   Keywords:  lvds
 Resolution:                         |   Blocking:  8059, 8154, 8289, 8310,
 Blocked By:                         |  8331
Has a Patch:  0                      |   Platform:  All
-------------------------------------+-------------------------------------

Comment (by kallisti5):

 Actually, nix the last comment.. I just verified the lvds mode returned
 *is* within the vesa edid data.


 I do see this issue:
 "KERN: radeon_hd: pll_adjust: external DP bridge detected!"

 I don't think these cards have DP bridges.  The PLL code is formed like
 the linux drm driver, however I think it looks wrong.  Let me play with
 something and I'll get back with a potential solution :)

-- 
Ticket URL: <http://dev.haiku-os.org/ticket/8329#comment:15>
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