nvidiafb, monitor A & B and CRTC 0 & 1
From: Petr Vandrovec <hidden>
Date: 2007-03-25 13:02:04
Hello, how much are you sure that monitor A i2c should use ddc_base 0x3E, and monitor B base 0x36 ? Yesterday I connected TV (using HDMI cable) to my box, and ... it came up in 720x480 resolution, and fbset allowed me to go only up to 1920x540. Which was quite surprising as when nvidiafb gets loaded second output stays in whatever mode it was before (720x400, text), displaying garbage, and only primary output does something. After I added some debugging printks I've found that code became a bit confused because it believed that primary monitor is 1920x540, but later it found in CRTC0's registers that panel size is 1920x1200 (Windows also agree that 1920x1200 is primary monitor, and 1920x1080i secondary one). When I applied attached patch then my monitor became as happy as it was before I connected HDMI cable to secondary output. Thanks, Petr [just in case] Signed-off-by: Petr Vandrovec <redacted> Before patch: ACPI: PCI Interrupt Link [APC8] enabled at IRQ 16 ACPI: PCI Interrupt 0000:02:00.0[A] -> Link [APC8] -> GSI 16 (level, low) -> IRQ 16 nvidiafb: Device ID: 10de0295 nvidiafb: CRTC0 analog not found nvidiafb: CRTC1 analog not found edid: 1920 x 540, 13468 nvidiafb: EDID found from BUS1 edid: 1920 x 1200, 6493 nvidiafb: EDID found from BUS2 nvidiafb: CRTC 0 is currently programmed for DFP nvidiafb: Using DFP on CRTC 0 nvidiafb: Panel size is 1920 x 1200 nvidiafb: Panel is TMDS nvidiafb: MTRR set to ON nvidiafb: Flat panel dithering disabled Console: switching to colour frame buffer device 90x30 nvidiafb: PCI nVidia NV29 framebuffer (64MB @ 0xE0000000) After patch: ACPI: PCI Interrupt Link [APC8] enabled at IRQ 16 ACPI: PCI Interrupt 0000:02:00.0[A] -> Link [APC8] -> GSI 16 (level, low) -> IRQ 16 nvidiafb: Device ID: 10de0295 nvidiafb: CRTC0 analog not found nvidiafb: CRTC1 analog not found edid: 1920 x 1200, 6493 nvidiafb: EDID found from BUS1 edid: 1920 x 540, 13468 nvidiafb: EDID found from BUS2 nvidiafb: CRTC 0 is currently programmed for DFP nvidiafb: Using DFP on CRTC 0 nvidiafb: Panel size is 1920 x 1200 nvidiafb: Panel is TMDS nvidiafb: MTRR set to ON nvidiafb: Flat panel dithering disabled Console: switching to colour frame buffer device 240x75 nvidiafb: PCI nVidia NV29 framebuffer (64MB @ 0xE0000000) Monitor: # EDID version 1 revision 3 Section "Monitor" # Block type: 2:0 3:fc Identifier "FPD2485W" VendorName "GWY" ModelName "FPD2485W" # Block type: 2:0 3:fc # Block type: 2:0 3:fd HorizSync 30-83 VertRefresh 56-76 # Max dot clock (video bandwidth) 160 MHz # Block type: 2:0 3:ff # DPMS capabilities: Active off:yes Suspend:no Standby:no Mode "1920x1200" # vfreq 59.950Hz, hfreq 74.038kHz DotClock 154.000000 HTimings 1920 1968 2000 2080 VTimings 1200 1203 1209 1235 Flags "-HSync" "+VSync" EndMode # Block type: 2:0 3:fc # Block type: 2:0 3:fd # Block type: 2:0 3:ff EndSection TV: # EDID version 1 revision 3 Section "Monitor" # Block type: 2:0 3:fc Identifier "LT-40FN97" VendorName "JVC" ModelName "LT-40FN97" # Block type: 2:0 3:fc # Block type: 2:0 3:fd HorizSync 15-46 VertRefresh 59-61 # Max dot clock (video bandwidth) 80 MHz # DPMS capabilities: Active off:yes Suspend:no Standby:no Mode "1920x540" # vfreq 60.053Hz, hfreq 33.750kHz DotClock 74.250000 HTimings 1920 2008 2052 2200 VTimings 540 542 547 562 Flags "Interlace" "+HSync" "+VSync" EndMode Mode "720x480" # vfreq 59.940Hz, hfreq 31.469kHz DotClock 27.000000 HTimings 720 736 798 858 VTimings 480 489 495 525 Flags "-HSync" "-VSync" EndMode # Block type: 2:0 3:fc # Block type: 2:0 3:fd EndSection