Reply To: [Resolved]piscreen does not work

[shannon]

Hi Mark,

1)Is this the test you did?
yes
2)Can you tell if the backlight has come on?
backlight is on when power on the PI
3)Is the screen black or white?
white
4)output of sudo vcdbg log msg：
root@raspberrypi:~# vcdbg log msg
000675.356: HDMI:EDID error reading EDID block 0 attempt 0
000676.620: HDMI:EDID error reading EDID block 0 attempt 1
000677.878: HDMI:EDID error reading EDID block 0 attempt 2
000679.138: HDMI:EDID error reading EDID block 0 attempt 3
000680.397: HDMI:EDID error reading EDID block 0 attempt 4
000681.655: HDMI:EDID error reading EDID block 0 attempt 5
000682.914: HDMI:EDID error reading EDID block 0 attempt 6
000684.173: HDMI:EDID error reading EDID block 0 attempt 7
000685.432: HDMI:EDID error reading EDID block 0 attempt 8
000686.690: HDMI:EDID error reading EDID block 0 attempt 9
000687.712: HDMI:EDID giving up on reading EDID block 0
000689.816: HDMI:Setting property pixel encoding to Default
000689.835: HDMI:Setting property pixel clock type to PAL
000689.854: HDMI:Setting property content type flag to No data
000689.876: HDMI:Setting property fuzzy format match to enabled
000695.295: gpioman: gpioman_get_pin_num: pin LEDS_RUNNING not defined
000695.317: gpioman: gpioman_get_pin_num: pin LEDS_NAND_ACTIVITY not defined
000695.338: gpioman: gpioman_get_pin_num: pin LEDS_USB_ACTIVITY not defined
000695.359: gpioman: gpioman_get_pin_num: pin LEDS_FATAL_ERROR not defined
000695.380: gpioman: gpioman_get_pin_num: pin LEDS_APP_OK not defined
000695.401: gpioman: gpioman_get_pin_num: pin LEDS_APP_FAILED not defined
000695.421: gpioman: gpioman_get_pin_num: pin LEDS_HDCP_AUTH not defined
000695.443: gpioman: gpioman_get_pin_num: pin LEDS_HDCP_UNAUTH not defined
000695.464: gpioman: gpioman_get_pin_num: pin LEDS_HDMI_ON not defined
000695.485: gpioman: gpioman_get_pin_num: pin LEDS_DVI_ON not defined
000695.507: gpioman: gpioman_get_pin_num: pin LEDS_HDMI_HPD_UP not defined
000695.527: gpioman: gpioman_get_pin_num: pin LEDS_REMOTE_CONTROL not defined
000695.547: gpioman: gpioman_get_pin_num: pin LEDS_ARM_CONTROLLED not defined
000701.223: hdmi: HDMI:hdmi_get_state is deprecated, use hdmi_get_display_state instead
000701.249: hdmi: HDMI:>>>>>>>>>>>>>Rx sensed, reading EDID<<<<<<<<<<<<<
000701.633: hdmi: HDMI:EDID error reading EDID block 0 attempt 0
000702.903: hdmi: HDMI:EDID error reading EDID block 0 attempt 1
000704.167: hdmi: HDMI:EDID error reading EDID block 0 attempt 2
000705.431: hdmi: HDMI:EDID error reading EDID block 0 attempt 3
000706.695: hdmi: HDMI:EDID error reading EDID block 0 attempt 4
000707.959: hdmi: HDMI:EDID error reading EDID block 0 attempt 5
000709.223: hdmi: HDMI:EDID error reading EDID block 0 attempt 6
000710.487: hdmi: HDMI:EDID error reading EDID block 0 attempt 7
000711.752: hdmi: HDMI:EDID error reading EDID block 0 attempt 8
000713.017: hdmi: HDMI:EDID error reading EDID block 0 attempt 9
000714.044: hdmi: HDMI:EDID giving up on reading EDID block 0
000714.072: hdmi: HDMI: No lookup table for resolution group 0
000714.090: hdmi: HDMI: hotplug attached with DVI support
000714.150: hdmi: HDMI:hdmi_get_state is deprecated, use hdmi_get_display_state instead
000714.513: hdmi: HDMI:EDID error reading EDID block 0 attempt 0
000715.775: hdmi: HDMI:EDID error reading EDID block 0 attempt 1
000717.037: hdmi: HDMI:EDID error reading EDID block 0 attempt 2
000718.299: hdmi: HDMI:EDID error reading EDID block 0 attempt 3
000719.561: hdmi: HDMI:EDID error reading EDID block 0 attempt 4
000720.824: hdmi: HDMI:EDID error reading EDID block 0 attempt 5
000722.086: hdmi: HDMI:EDID error reading EDID block 0 attempt 6
000723.348: hdmi: HDMI:EDID error reading EDID block 0 attempt 7
000724.610: hdmi: HDMI:EDID error reading EDID block 0 attempt 8
000725.872: hdmi: HDMI:EDID error reading EDID block 0 attempt 9
000726.897: hdmi: HDMI:EDID giving up on reading EDID block 0
000726.955: hdmi: HDMI: hotplug deassert
000726.970: hdmi: HDMI: HDMI is currently off
000726.985: hdmi: HDMI: changing mode to unplugged
000727.009: hdmi: HDMI:hdmi_get_state is deprecated, use hdmi_get_display_state instead
000727.760: *** Restart logging

000728.502: Read command line from file ‘cmdline.txt’
dwc_otg.lpm_enable=0 console=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait fbcon=map:10 fbcon=rotate:2 fbcon=font:ProFont6x11

000732.965: Loading ‘kernel.img’ from SD card
001018.344: Kernel trailer DTOK property says yes
001018.442: Loading ‘bcm2708-rpi-b-plus.dtb’ from SD card
001042.798: Loaded overlay ‘piscreen’
001066.886: dtparam: speed=8000000
001068.216: dtparam: rotate=90
001087.255: gpioman: gpioman_get_pin_num: pin SDCARD_CONTROL_POWER not defined
003138.395: vchiq_core: vchiq_init_state: slot_zero = 0x5b800000, is_master = 1
003142.168: hdmi: HDMI:hdmi_get_state is deprecated, use hdmi_get_display_state instead
003146.167: gpioman: gpioman_get_pin_num: pin LEDS_RUNNING not defined
003146.190: gpioman: gpioman_get_pin_num: pin LEDS_NAND_ACTIVITY not defined
003146.211: gpioman: gpioman_get_pin_num: pin LEDS_USB_ACTIVITY not defined
003146.232: gpioman: gpioman_get_pin_num: pin LEDS_FATAL_ERROR not defined
003146.255: gpioman: gpioman_get_pin_num: pin LEDS_APP_OK not defined
003146.278: gpioman: gpioman_get_pin_num: pin LEDS_APP_FAILED not defined
003146.297: gpioman: gpioman_get_pin_num: pin LEDS_HDCP_AUTH not defined
003146.320: gpioman: gpioman_get_pin_num: pin LEDS_HDCP_UNAUTH not defined
003146.342: gpioman: gpioman_get_pin_num: pin LEDS_HDMI_ON not defined
003146.364: gpioman: gpioman_get_pin_num: pin LEDS_DVI_ON not defined
003146.386: gpioman: gpioman_get_pin_num: pin LEDS_HDMI_HPD_UP not defined
003146.407: gpioman: gpioman_get_pin_num: pin LEDS_REMOTE_CONTROL not defined
003146.427: gpioman: gpioman_get_pin_num: pin LEDS_ARM_CONTROLLED not defined
root@raspberrypi:~#