为什么一段程序运行时屏幕一直红屏，但是多试了几次又偶尔可以正常显示图像

重现步骤`
一开机就会这样

期待结果和实际结果
屏幕红色
补充：CAN MV多次连接也连不上（mode2和mode3都尝试了），但是尝试多了也偶尔能连上一次

软硬件版本信息
硬件canmv-dev-kit-V2.0.5软件CanMV IDE 2.9.2

错误日志
init i2c:2 freq:100000
[CANMV]: sensor id = 45
[CANMV]: find gc2145
ready load model
model size 550696
model load succeed

尝试解决过程
重启

补充材料
程序：
import sensor, image, time, lcd, gc, cmath
from maix import KPU
from maix import GPIO
from fpioa_manager import fm
from board import board_info

fm.register(6, fm.fpioa.GPIO0, force=True)
led_r = GPIO(GPIO.GPIO0, GPIO.OUT)

lcd.init() # Init lcd display
lcd.clear(lcd.RED) # Clear lcd screen.

sensor.reset() # Reset and initialize the sensor.
sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE)
sensor.set_framesize(sensor.QVGA) # Set frame size to QVGA (320x240)
#sensor.set_vflip(True) # 翻转摄像头
#sensor.set_hmirror(True) # 镜像摄像头
sensor.skip_frames(time = 1000) # Wait for settings take effect.
clock = time.clock() # Create a clock object to track the FPS.

print("ready load model")

labels = ["moto"] #类名称，按照label.txt顺序填写
anchor = (6.38, 4.84, 5.19, 6.03, 6.31, 6.09, 5.69, 6.92, 7.69, 5.81) # anchors,使用anchor.txt中第二行的值

kpu = KPU()
kpu.load_kmodel('/sd/det.kmodel')
#kpu.load_kmodel(0x300000, 584744)
kpu.init_yolo2(anchor, anchor_num=(int)(len(anchor)/2), img_w=320, img_h=240, net_w=320 , net_h=240 ,layer_w=10 ,layer_h=8, threshold=0.5 , nms_value=0.3, classes=len(labels))
led_r.value(1)

while(True):
gc.collect()

clock.tick()
img = sensor.snapshot()

kpu.run_with_output(img)
dect = kpu.regionlayer_yolo2()

fps = clock.fps()

if len(dect) > 0:
    led_r.value(0)
    for l in dect :
        a = img.draw_rectangle(l[0],l[1],l[2],l[3],color=(0,255,0))

        info = "%s %.3f" % (labels[l[4]], l[5])
        a = img.draw_string(l[0],l[1],info,color=(255,0,0),scale=2.0)
        print(info)
        del info
if len(dect) == 0:
   led_r.value(1)
a = img.draw_string(0, 0, "%2.1ffps" %(fps),color=(0,60,255),scale=2.0)
lcd.display(img)

故障现象：