the final solution of compulsive modification of HDMI output resolution.
As you may have discovered the common configuration method in raspberry pi (such as alteration of /boot/config.txt) does not work on BPI, neither does the modification of cmdline.txt and uEnv.txt especially for some display with converter(HDMI->VGA or HDMI ->IDVI) or some old display devices. Today,we are introducing a new solution to modify the resolution of HDMI, no other risks if you do it according to this document step by step:
1,install compile sunxi-tools depended-upon packages
sudo apt-get install libusb-1.0-0-dev
2,get sunxi-tools new code from github:
git clone https://github.com/linux-sunxi/sunxi-tools.git
3,compile sunxi-tools
cd sunxi-tools
make
4,backup script.bin
sudo cp /boot/bananapi/script.bin /boot/bananapi/script.bak
5,copy script.bin to current dir
cp /boot/bananapi/script.bin ./
6,use bin2fex change bin to fex
bin2fex ./script.bin ./script.fex
7,edit script.fex file:
nano script.fex
see this below:
[disp_init]
disp_init_enable = 1
disp_mode = 0
screen0_output_type = 3
screen0_output_mode = 5
screen1_output_type = 2
screen1_output_mode = 11
fb0_framebuffer_num = 2
fb0_format = 10
fb0_pixel_sequence = 0
fb0_scaler_mode_enable = 1
fb1_framebuffer_num = 2
fb1_format = 10
fb1_pixel_sequence = 0
fb1_scaler_mode_enable = 0
lcd0_backlight = 197
lcd1_backlight = 197
lcd0_bright = 50
lcd0_contrast = 50
lcd0_saturation = 57
lcd0_hue = 50
lcd1_bright = 50
lcd1_contrast = 50
lcd1_saturation = 57
lcd1_hue = 50
just change screen0_output_mode = 5, note , other not do any change.
A20 support as below:
HDMI/TV mode numbers:
0 480i
1 576i
2 480p
3 576p
4 720p 50Hz
5 720p 60Hz
6 1080i 50 Hz
7 1080i 60 Hz
8 1080p 24 Hz
9 1080p 50 Hz
10 1080p 60 Hz
11 PAL
12 PAL SVIDEO
14 NTSC
15 NTSC SVIDEO
17 PAL_M
18 PAL_M SVIDEO
20 PAL_NC
21 PAL_NC SVIDEO
23 1080p 24 Hz 3D
24 720p 50 Hz 3D
25 720p 60 Hz 3D
26 1360x768 60 Hz
27 1280x1024 60 Hz
Press Ctrl + x ， Y ，Enter save and exit edit:
8,use fex2bin change fex to bin
fex2bin ./script.fex ./script.bin
copy script.bin to /boot
sudo cp ./script.bin /boot/bananapi/
9,reboot and make a try
sudo reboot
another easy way: just edit uEnv.txt file to change it:
bootargs=enforcing=1 console=ttyS0,115200 console=tty1 root=/dev/mmcblk0p2 rootwait init=/init vmalloc=384M ion_c ma_list=“120m,176m,512m” loglevel=8 bootmenutimeout=10 datadev=mmcblk0p2 disp.screen0_output_type=3 disp.screen0_o utput_mode=10 disp.screen1_output_type=3 disp.screen1_output_mode=10
