HI:
can you help me?
i would like to having a display on the HDMI and LVDS.So,i refer to the sarbresd linux release note.I modified the kernel boot parameters as follows:
set bootargs console=ttymxc0,115200 init=/init video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24 video=mxcfb1:dev=ldb LDB-XGA if=RGB666 fbmem=30M,vmalloc=400M androidboot.console=ttymxc0
At last ,i found always to be display either hdmi or LVDS. In a word ,one of these can be displayed.
can you told me the answer?
已解决! 转到解答。
Can you try the following bootargs?:
setenv bootargs_mmc 'setenv bootargs ${bootargs} root=/dev/mmcblk0p1 rootwait rw video=mxcdi0fb:RGB24,1024x768M@60 hdmi video=mxcdi1fb:RGB666,XGA di0_primary ldb=di1 ip=none'
the penguin is shown only in the HDMI,then if you enter the command:
echo 0 > /sys/class/graphics/fb1/blank
The penguin will be shown in the LVDS
You could also use this one:
setenv bootargs_mmc 'setenv bootargs ${bootargs} root=/dev/mmcblk0p1 rootwait rw video=mxcdi0fb:RGB24,1024x768M@60 hdmi video=mxcdi1fb:RGB666,XGA di1_primary ldb=di1 ip=none'
the penguin is only shown in the LVDS ,then if you enter the command:
echo 0 > /sys/class/graphics/fb1/blank
The penguin will be shown in the HDMI
Let me know if it works
Can you try the following bootargs?:
setenv bootargs_mmc 'setenv bootargs ${bootargs} root=/dev/mmcblk0p1 rootwait rw video=mxcdi0fb:RGB24,1024x768M@60 hdmi video=mxcdi1fb:RGB666,XGA di0_primary ldb=di1 ip=none'
the penguin is shown only in the HDMI,then if you enter the command:
echo 0 > /sys/class/graphics/fb1/blank
The penguin will be shown in the LVDS
You could also use this one:
setenv bootargs_mmc 'setenv bootargs ${bootargs} root=/dev/mmcblk0p1 rootwait rw video=mxcdi0fb:RGB24,1024x768M@60 hdmi video=mxcdi1fb:RGB666,XGA di1_primary ldb=di1 ip=none'
the penguin is only shown in the LVDS ,then if you enter the command:
echo 0 > /sys/class/graphics/fb1/blank
The penguin will be shown in the HDMI
Let me know if it works