[haiku-bugs] Re: [Haiku] #4523: black screen on ATI Mobility Radeon X700
- From: "x-ist" <trac@xxxxxxxxxxxx>
- Date: Wed, 21 Nov 2012 19:52:16 -0000
#4523: black screen on ATI Mobility Radeon X700
---------------------------------------+----------------------------
Reporter: makitka | Owner: euan
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: Drivers/Graphics/radeon | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking: 7662
Has a Patch: 0 | Platform: All
---------------------------------------+----------------------------
Comment (by x-ist):
I compiled the radeon driver with ENABLE_LOGGING enabled in
/haiku/headers/private/graphics/common/log_col.h
to see more syslog output.
Don't know whether I interprete the log correctly, but I see the following
oddities:
According to
{{{
KERN: Radeon - Radeon_GetBIOSDFPInfo: Panel Info from ATOMBIOS:
KERN: XRes: 1280, YRes: 800, DotClock: 71250
}}}
the correct resolution is read from ATOMBIOS.
Following that, display detection is preforrmed and two monitors are
detected, although there is just the built-in display panel only. No
external monitors attached.
{{{
KERN: Radeon - Radeon_DetectDisplays: Searching port 0
KERN: Radeon - Radeon_DetectCRTInt: Found colour CRT connected to CRT-DAC
KERN: Radeon - Radeon_DetectDisplays: Detected monitors: 0x2
KERN: Radeon - Radeon_ConnectorInfo: Port 0:-
KERN: Monitor: CRT
KERN: Conn Type: VGA
KERN: DDC Port: None
KERN: TMDS Type: None
KERN: DAC Type: Primary
KERN: Radeon - Radeon_ConnectorInfo: Port 1:-
KERN: Monitor: None
KERN: Conn Type: LVDS
KERN: DDC Port: None
KERN: TMDS Type: None
KERN: DAC Type: Unknown
}}}
Port 1 should be the native panel right?
Afterwards the display mode is set
{{{
KERN: Radeon - SET_DISPLAY_MODE: width=1600, height=900
}}}
This resolution is incorrect and probably not supported by the panel
(1280x800 would be just right).
Then, a second time displays are detected (why?) and the following bad
line follows:
{{{
KERN: Radeon - Radeon_SetupDefaultMonitorRouting:
display_devices=2, whished_num_heads=1, use_laptop_panel=0
}}}
So the laptop panel is not going to be used :(
--
Ticket URL: <http://dev.haiku-os.org/ticket/4523#comment:18>
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