屏幕在运行luckfox_lvgl_demo时没有显示，多次开机中只有一次有logo，其他开机过程中没有logo，mode模式为480*480

• xiaobei

  Posts: 2

  Joined: 2025-04-09 15:30

  2025-04-09 15:45

  开发板型号：luckfox pico RV1106 Ultra 附带480*480drm屏幕
  
  
  刷写固件：Luckfox_Pico_Ultra_EMMC_250313
  
  
  问题：屏幕在运行luckfox_lvgl_demo时没有显示，多次开机中只有一次有logo，其他开机过程中没有logo，mode模式为480*480
  
  [root@luckfox ]# dmesg | grep drm
  [ 0.070135] rockchip-drm display-subsystem: bound ff990000.vop (ops 0xb03f398c)
  [ 0.070195] rockchip-rgb ff000000.syscon:rgb: [drm:rockchip_rgb_bind] *ERROR* failed to find panel or bridge: -517
  [ 0.481011] rockchip-drm display-subsystem: bound ff990000.vop (ops 0xb03f398c)
  [ 0.481093] rockchip-drm display-subsystem: bound ff000000.syscon:rgb (ops 0xb03f44ec)
  [ 0.481358] rockchip-drm display-subsystem: failed to parse resources for logo display
  [ 0.482533] rockchip-vop ff990000.vop: [drm:vop_crtc_atomic_enable] Update mode to 480x480p60, type: 17
  [ 0.731104] rockchip-drm display-subsystem: [drm] fb0: rockchipdrmfb frame buffer device
  [ 0.731746] [drm] Initialized rockchip 3.0.0 20140818 for display-subsystem on minor 0
  
  
  [root@luckfox root]# modetest
  Encoders:
  id crtc type possible crtcs possible clones
  69 66 DPI 0x00000001 0x00000001
  
  Connectors:
  id encoder status name size (mm) modes encoders
  70 69 connected DPI-1 85x85 1 69
  modes:
  index name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot
  #0 480x480 59.94 480 530 534 544 480 488 498 506 16500 flags: nhsync, nvsync; type: preferred, driver
  props:
  1 EDID:
  flags: immutable blob
  blobs:
  
  value:
  2 DPMS:
  flags: enum
  enums: On=0 Standby=1 Suspend=2 Off=3
  value: 0
  5 link-status:
  flags: enum
  enums: Good=0 Bad=1
  value: 0
  6 non-desktop:
  flags: immutable range
  values: 0 1
  value: 0
  4 TILE:
  flags: immutable blob
  blobs:
  
  value:
  48 brightness:
  flags: range
  values: 0 100
  value: 50
  49 contrast:
  flags: range
  values: 0 100
  value: 50
  52 saturation:
  flags: range
  values: 0 100
  value: 50
  53 hue:
  flags: range
  values: 0 100
  value: 50
  
  CRTCs:
  id fb pos size
  66 71 (0,0) (480x480)
  #0 480x480 59.94 480 530 534 544 480 488 498 506 16500 flags: nhsync, nvsync; type: preferred, driver
  props:
  24 VRR_ENABLED:
  flags: range
  values: 0 1
  value: 0
  38 ACLK:
  flags: range
  values: 0 4294967295
  value: 297000
  39 BACKGROUND:
  flags: range
  values: 0 4294967295
  value: 0
  40 LINE_FLAG1:
  flags: range
  values: 0 4294967295
  value: 0
  43 left margin:
  flags: range
  values: 0 100
  value: 100
  44 right margin:
  flags: range
  values: 0 100
  value: 100
  45 top margin:
  flags: range
  values: 0 100
  value: 100
  46 bottom margin:
  flags: range
  values: 0 100
  value: 100
  67 PLANE_MASK:
  flags: immutable bitmask
  values: Win0=0x1 Win1=0x2 Win2=0x4 Win3=0x8
  value: 0
  68 FEATURE:
  flags: immutable bitmask
  values: ALPHA_SCALE=0x1 HDR10=0x2 NEXT_HDR=0x4
  value: 0
  
  Planes:
  id crtc fb CRTC x,y x,y gamma size possible crtcs
  55 66 71 0,0 0,0 0 0x00000001
  formats: XR24 AR24 XB24 AB24 RG24 BG24 RG16 BG16
  props:
  8 type:
  flags: immutable enum
  enums: Overlay=0 Primary=1 Cursor=2
  value: 1
  54 FEATURE:
  flags: immutable bitmask
  values: scale=0x1 alpha=0x2 hdr2sdr=0x4 sdr2hdr=0x8 afbdc=0x10
  value: 2
  56 alpha:
  flags: range
  values: 0 65535
  value: 65535
  57 pixel blend mode:
  flags: enum
  enums: None=2 Pre-multiplied=0 Coverage=1
  value: 0
  58 zpos:
  flags: range
  values: 0 0
  value: 0
  59 NAME:
  flags: immutable bitmask
  values: VOP0-win1-0=0x1
  value: 1
  60 INPUT_WIDTH:
  flags: immutable range
  values: 0 1280
  value: 0
  61 INPUT_HEIGHT:
  flags: immutable range
  values: 0 1280
  value: 0
  62 OUTPUT_WIDTH:
  flags: immutable range
  values: 0 1280
  value: 0
  63 OUTPUT_HEIGHT:
  flags: immutable range
  values: 0 1280
  value: 0
  64 SCALE_RATE:
  flags: immutable range
  values: 8 8
  value: 0
  65 colorkey:
  flags: range
  values: 0 2164260863
  value: 0
  
  Frame buffers:
  id size pitch
  
  
  
  [root@luckfox root]# ./luckfox_lvgl_demo
  Mode 0: 480x480 @ 60Hz
  
  
  [root@luckfox card0-DPI-1]# cat *
  cat: read error: Is a directory
  On
  enabled
  480x480
  cat: read error: Is a directory
  connected
  cat: read error: Is a directory
  
  
  
  [root@luckfox root]# fbset
  
  mode "480x480-0"
  # D: 0.000 MHz, H: 0.000 kHz, V: 0.000 Hz
  geometry 480 480 480 480 32
  timings 0 0 0 0 0 0 0
  accel true
  rgba 8/16,8/8,8/0,0/0
  endmode

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