[haiku-bugs] Re: [Haiku] #8001: Regression: intel_extreme mode setting
- From: "pulkomandy" <trac@xxxxxxxxxxxx>
- Date: Tue, 22 Nov 2011 18:54:28 -0000
#8001: Regression: intel_extreme mode setting
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Reporter: jprostko | Owner: mmlr
Type: bug | Status: in-progress
Priority: high | Milestone: R1
Component: | Version: R1/Development
Drivers/Graphics/intel_extreme | Keywords: intel_extreme,
Resolution: | 1400x1050, mode
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
-------------------------------------+-------------------------------------
Comment (by pulkomandy):
Its not some random magic number :)
This number is involved in rounding the horizontal resolution to match
what is allowed by the video card.
From intel documentation, the G35 family only allowed even pixel counts,
and later they changed it to allow anything.
So, setting it to 1 may break things for G35 family chips owner.
On the other hand, some modern cards seems to use an odd mode in their
mode description (or after computing of a mode by the GTF). In this case
the mode is rounded to match the constraint, and the result is not a valid
mode anymore, or not what's expected. The solution is to set the
constraints matching the card family.
--
Ticket URL: <http://dev.haiku-os.org/ticket/8001#comment:26>
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