[Intel-gfx] X201 + i915 pll problem

Zhenyu Wang zhenyuw at linux.intel.com
Thu Jul 1 05:27:30 CEST 2010


On 2010.07.01 13:18:39 +1000, Dave Airlie wrote:
> Has anyone seen and/or fixed:

https://bugs.freedesktop.org/show_bug.cgi?id=27471

Looks this timing is really a corner case in our PLL calculation,
which is not covered in current error range. So I tried to fallback
to the most close one.

> 
> [drm:drm_mode_debug_printmodeline], Modeline 12:"1280x800" 60 68940
> 1280 1296 1344 1408 800 801 804 816 0x48 0xa
> [drm:ironlake_crtc_dpms], crtc 1 dpms off
> [drm:ironlake_crtc_dpms], crtc 1 is disabled
> [drm:intel_crtc_mode_set], using SSC reference clock of 120 MHz
> [drm:intel_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
> [drm:drm_crtc_helper_set_config] *ERROR* failed to set mode on crtc
> ffff88022e4ff000
> fbcon_init: detected unhandled fb_set_par error, error code -22
> 
> Its an Arrandale X201, I have one with a slightly different panel and
> it seems fine, this one another person has doesn't.
> 
> (II) intel(0): EDID for output LVDS1
> (II) intel(0): Manufacturer: LEN  Model: 4011  Serial#: 0
> (II) intel(0): Year: 2009  Week: 0
> (II) intel(0): EDID Version: 1.3
> (II) intel(0): Digital Display Input
> (II) intel(0): Max Image Size [cm]: horiz.: 26  vert.: 16
> (II) intel(0): Gamma: 2.20
> (II) intel(0): DPMS capabilities: StandBy Suspend Off
> (II) intel(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4
> (II) intel(0): First detailed timing is preferred mode
> (II) intel(0): redX: 0.575 redY: 0.360   greenX: 0.370 greenY: 0.555
> (II) intel(0): blueX: 0.155 blueY: 0.110   whiteX: 0.313 whiteY: 0.329
> (II) intel(0): Manufacturer's mask: 0
> (II) intel(0): Supported detailed timing:
> (II) intel(0): clock: 68.9 MHz   Image Size:  261 x 163 mm
> (II) intel(0): h_active: 1280  h_sync: 1296  h_sync_end 1344
> h_blank_end 1408 h_border: 0
> (II) intel(0): v_active: 800  v_sync: 801  v_sync_end 804 v_blanking:
> 816 v_border: 0
> (II) intel(0): Supported detailed timing:
> (II) intel(0): clock: 61.0 MHz   Image Size:  261 x 163 mm
> (II) intel(0): h_active: 1280  h_sync: 1328  h_sync_end 1360
> h_blank_end 1478 h_border: 0
> (II) intel(0): v_active: 800  v_sync: 803  v_sync_end 809 v_blanking:
> 825 v_border: 0
> (II) intel(0): Unknown vendor-specific block f
> (II) intel(0):  LTN121AT07L02
> (II) intel(0): EDID (in hex):
> (II) intel(0): 	00ffffffffffff0030ae114000000000
> (II) intel(0): 	00130103801a1078ea5cd5935c5e8e27
> (II) intel(0): 	1c505400000001010101010101010101
> (II) intel(0): 	010101010101ee1a0080502010301030
> (II) intel(0): 	130005a310000019d01700c650201930
> (II) intel(0): 	3020360005a3100000190000000f0081
> (II) intel(0): 	0a3c810a321609004ca34154000000fe
> (II) intel(0): 	004c544e313231415430374c30320038
> 
> 
> Dave.

-- 
Open Source Technology Center, Intel ltd.

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