JB4.3_1.1.0 HDMI output not correct

[Danube]

Hi Sir,

We are testing FSL JB4.3_1.1.0 in MCIMX6QSDP. (B3 version)

When we enable LVDS + HDMI function , HDMI output not correct.

My Uboot setting.

setenv bootargs 'console=ttymxc0,115200 androidboot.console=ttymxc0 init=/init rw video=mxcfb0:dev=ldb,LDB-XGA if=RGB666 bpp=32 video=mxcfb1:dev=hdmi,1920x1080M@60 fbmem=15M,28M vmalloc=400M fb0base=0x27b00000 enable_wait_mode=off androidboot.hardware=freescale ldo_active=on'

We also check EDID function and it is correct to detect 1080p TV.

LVDS Panel

HDMI Site

Original Attachment has been moved to: JB433_110_error.txt.zip

[Xavier]

I'm currently facing the exact same problem and I can't find any piece of answer.

I'm using a RIoTboard with a Farnell LCD8000-70T-EX1 screen connected to the expansion port and a Iiyama ProLite B2280HS screen connected to the HDMI port. I'm running KitKat.

Does anyone have a suggestion?

[EricNelson]

Hi Apollo,

I think you need the 'bpp=32' and 'if=RGB24' clauses in the HDMI setup on the kernel command-line.

i.e.

      video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32

[Danube]

Hi Eric,

It is the same issue in HDMI display.

[YixingKong]

Apollo

This discussion is closed since no activity. If you still need help, please feel free to reply with an update to this discussion, or create another discussion.

Thanks,

Yixing

[YixingKong]

Apollo

Had your issue got resolved? If yes, we are going to close the discussion in 3 days. If you still need help, please feel free to reply with an update to this discussion.

Thanks,
Yixing

[EricNelson]

Well, it was worth a shot...

Do you get the same result if you swap fb0 and fb1?

There are also some configuration files in /system/etc/display_mode_fb0.conf (and fb2 and fb4), but the stock values have always worked for us.

The other thing that you might want to look at are the entries in /sys/class/graphics/fb0/ (and fb2/) to see how things are configured (esp. mode, modes, bits_per_pixel entries)