VIM3 Android Pie HDMI resolution testing

jasonl · August 18, 2020, 9:35am

@Alexandr 1280x480p60hz ,i have not added in my code ,so it can not supported

Alexandr · August 18, 2020, 10:23am

All clear ! And when to wait for the addition?

jasonl · August 20, 2020, 2:44am

@davemf Then no signal:
1280x480 + 430x320 + all 2560+ ,for these resolutions ,can you help me to confirm the timeings is ok under uboot ,if logo display unnormal ,i will check the register para

davemf · August 20, 2020, 7:48am

I can check it on 800x480 display only, but I think this resolution don’t work on my display and I can not check correct this timings.

davemf · August 20, 2020, 8:00am

@jasonl

1600x1200 + 1360x768 + 800x480 + 1024x600

01-01 12:07:44.228 3428 3599 I SystemControl: jason getPosition enter curMode:1080p60hz
01-01 12:07:44.244 3428 3599 I SystemControl: jason getPosition enter curMode:1080p60hz
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3id_L · August 20, 2020, 12:22pm

I tested 2560x1600, it sometimes works and sometimes it stays black.
But when it works it has strange artifacts and black bars.

kvim3:/ # cat /sys/class/graphics/fb0/osd_background_size
1920 1080 1920 1080 0 0 1920 1080

Electr1 · August 20, 2020, 12:25pm

Looks like cancer

jasonl · August 20, 2020, 12:46pm

you only enter uboot cmd line ,input like this
setenv outputmode 1600x1200p60hz
setenv hdmimode 1600x1200p60hz
setenv ubootenv.var.hdmimode 1600x1200p60hz
setenv ubootenv.var.outputmode 1600x1200p60hz
setenv ubootenv.var.is.bestmode 1600x1200p60hz
then reboot your board, your board will work as the mode you input , enter uboot cmd line ,if logo display normal ,it indicates timings is ok

jasonl · August 20, 2020, 12:53pm

davemf:

The first picture - 800x480, the second - 1024x600.
I check again on my display, I use one display with native resolution 800x480.

results

Picture was perfect:
kvim3:/ $ cat /sys/class/graphics/fb0/osd_background_size
1920 1080 1920 1080 0 0 1920 1080
kvim3:/ $ cat /sys/class/graphics/fb0/osd_background_size
1920 1080 1920 1080 0 0 1280 800
kvim3:/ $ cat /sys/class/graphics/fb0/osd_background_size
1920 1080 1920 1080 0 0 1440 900
kvim3:/ $ cat /sys/class/graphics/fb0/osd_background_size
1920 1080 1920 1080 0 0 1024 768
kvim3:/ $ cat /sys/class/graphics/fb0/osd_background_size
1920 1080 1920 1080 0 0 1280 1024
kvim3:/ $ cat /sys/class/graphics/fb0/osd_background_size
1920 1080 1920 1080 0 0 800 600
kvim3:/ $ cat /sys/class/graphics/fb0/osd_background_size
1920 1080 1920 1080 0 0 1680 1050
kvim3:/ $ cat /sys/class/graphics/fb0/osd_background_size
1920 1080 1920 1080 0 0 1600 900

Then: 1920x1200 - picture was good with black horizontal line, but:
cat /sys/class/graphics/fb0/osd_background_size
1920 1080 1920 1080 0 0 1920 1080

Then picture was bad:
1600x1200 + 1360x768 + 800x480 + 1024x600
cat /sys/class/graphics/fb0/osd_background_size
1920 1080 1920 1080 0 0 1920 1080

Then no signal:
1280x480 + 430x320 + all 2560+
cat /sys/class/graphics/fb0/osd_background_size
1920 1080 1920 1080 0 0 1920 1080

Please try my timings.

@davemf you said you only use one display with native resolution 800x480 to test all resolutions ? i am not sure if it can get correct result? i think you should use supported monitor to test Corresponding resolutions

jasonl · August 20, 2020, 1:00pm

I have a question ,you tested 1024x600p60hz 1360x768p60hz before ,it was ok ,but now it is not ok ?
Because I have no monitor to verify, it is not convenient to debug, so I need your cooperation, thank you！

davemf · August 20, 2020, 1:02pm

It’s my mistake, 1024x600p60hz 1360x768p60hz does not work before.

jasonl · August 20, 2020, 1:05pm

It doesn’t matter. Now I just want to know if the logo is normal under uboot

davemf · August 20, 2020, 1:13pm

how to enter in uboot cmd line?

davemf@ubuntu:~/VIM3_PIE$ adb shell
kvim3:/ $ setenv outputmode 800x480p60hz
/system/bin/sh: setenv: not found

jasonl · August 21, 2020, 2:56am

Do you know how to use serial tool ,if you do not know ,i can send debugging u-boot.bin to you ,then you use adb fastboot cmd to burn u-boot.bin,for example
adb reboot fastboot
fastboot flashing unlock
fastboot flash bootloader u-boot-xx.bin
fastboot reboot
after you burn u-boot.bin ,reboot your board ,then check logo if can display
here is download link https://mega.nz/file/mVFGUQiQ#r3GRWFbMnx8TPZTVN87nUXGdCM2-3Z9wxHNgovFL6IY

3id_L · August 21, 2020, 3:21am

@jasonl do you have a u-boot-2560x1600.bin for testing?

jasonl · August 21, 2020, 5:42am

yes ,i will send to you soon

jasonl · August 21, 2020, 6:50am

@3id_L @davemf i build testing u-boot.bin for all not working resolutions ,you can download here https://mega.nz/file/rFdlWCrQ#4yxJ3yP-BplunAsCliRGNjrPsBFj12cDaKHRIb0mcEk

3id_L · August 21, 2020, 7:45am

@jasonl I tested 2560x1600 and the display shows correct resolution in the menu but the logo is not showing on boot.

jasonl · August 21, 2020, 8:06am

it indicates 2560x1600’s timings is not correct , the display shows correct resolution is because of it will change to 1080p when 2560x1600 can not work

davemf · August 24, 2020, 2:55pm

480x320, 1020x600 - no picture - black screen
800x480, 1360x768, 1920x1200 - good khadas logo
1600x1200 - no signal