AnsweredAssumed Answered

How to set LVDS as default panel

Question asked by 超超 徐 on Jul 27, 2016
Latest reply on Jul 28, 2016 by Gary Bisson

I installed ubuntu Image in my iMX6 sabre lite board.
I want to use LVDS as default output, so I changed the u-boot environment as below:

setenv bootargs_mmc 'setenv bootargs ${bootargs} root=/dev/mmcblk1p1 rootwait rw video=mxcfb0:dev=ldb,1920x1080M@60,if=RGB666', then saveenv and reset.

I saw the log from concole is "ldb ldb.14: failed to find valid LVDS channel".

The HDMI output can work normally. In the uboot, it shows:

U-Boot 2016.03-20415-ged95621 (Jul 07 2016 - 17:28:42 -0700), Build: jenkins-ub4


CPU:   Freescale i.MX6Q rev1.2 at 792 MHz

Reset cause: POR

Board: SABRE Lite

I2C:   ready

DRAM:  1 GiB


SF: Detected SST25VF016B with page size 256 Bytes, erase size 4 KiB, total 2 MiB

auto-detected panel 1280x720M@60

Display: hdmi:1280x720M@60 (1280x720)

In:    serial

Out:   serial                                                                  

Err:   serial                                                                  

Net:   Micrel ksz9021 at 6                                                     

FEC [PRIME]                                                                    

Error: FEC address not set.                                                    

, usb_ether                                                                    

Hit any key to stop autoboot:  0 


How can I change the default panel from HDMI to LVDS?