#13535: Intel 865G wrong video mode
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Reporter: idefix | Owner: kallisti5
Type: bug | Status: new
Priority: normal | Milestone: Unscheduled
Component: Drivers/Graphics/intel_extreme | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by idefix):
It looks like something is going wrong with the PLL calculation.
hrev51177:
{{{
intel_extreme: intel_set_display_mode(1440x900)
intel_extreme: IsConnected: Analog A PortRegister: 0x5001100
intel_extreme: CALLED void Pipe::Enable(bool)
AGP: create memory 0xcfe5cba0, base e0010000, size 4f2000, flags 0
AGP: allocation is made of reserved memory
AGP: reserved memory already bound
intel_extreme: IsConnected: Analog A PortRegister: 0x5001100
intel_extreme: SetDisplayMode: Analog A 1440x900
intel_extreme: compute_dpll_9xx: required MHz: 106.5
intel_extreme: PLL limits, min: p 5 (p1 1, p2 10), n 5, m 70 (m1 12, m2 7)
intel_extreme: PLL limits, max: p 80 (p1 8, p2 5), n 10, m 120 (m1 22, m2
11)
intel_extreme: compute_dpll_9xx: best MHz: 3.96736e-12 (error: 106.5)
intel_extreme: compute_pll_divisors: found: p = 1925768716 (p1 =
1925768718, p2 = 1925768440), n = 10158872, m = 1617 (m1 = 1, m2 = 8)
intel_extreme: CALLED void Pipe::ConfigureClocks(const pll_divisors &,
long unsigned int, long unsigned int)
intel_extreme: CALLED void Pipe::ConfigureTimings(display_mode *)
intel_extreme: ConfigureTimings: fPipeOffset: 0x0
KERN: intel_extreme: intel_set_display_mode: Port configuration completed
successfully!
}}}
alpha-4.1:
{{{
intel_set_display_mode(1440x900)
AGP: create memory 0xce5a7e60, base d0010000, size 4f2000, flags 0
AGP: allocation is made of reserved memory
AGP: reserved memory already bound
PLL limits, min: p 4 (p1 2, p2 4), n 5, m 96 (m1 20, m2 8)
PLL limits, max: p 128 (p1 33, p2 2), n 18, m 140 (m1 28, m2 18)
required MHz: 106.5
found: 106.4 MHz, p = 12 (p1 = 3, p2 = 4), n = 5, m = 133 (m1 = 25, m2 =
8)
intel_get_frame_buffer_config()
}}}
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Ticket URL: <https://dev.haiku-os.org/ticket/13535#comment:3>
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