No display on HDMI and DVI screen

Hi everybody,

I have a display when I on u-boot (spashscreen toradex) but when I boot, the display disappears and get “no signal”. I’ve tried with dvi and hdmi both. With HDMI, I have the linux boot console until start X but after nothing and have nothing on DVI.

My dmesg :

[0.000000] Kernel command line: enable_wait_mode=off vmalloc=400M ip=off root=/dev/mmcblk0p2 rw,noatime rootfstype=ext3 rootwait fec_mac=00:14:2d:4a:2c:a8 consoleblank=0 no_console_suspend=1 console=tty1 console=ttymxc0,115200n8 video=mxcfb0:dev=hdmi,1280x800M@60,if=RGB24 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off fbmem=64M
[0.400215] mxc_sdc_fb fb.20: register mxc display driver hdmi
[0.400293]mxc_hdmi 20e0000.hdmi_video: Detected HDMI controller 0x13:0xa:0xa0:0xc1
[0.531295] mxc_hdmi 20e0000.hdmi_video: Read EDID again
[0.534333] mxc_hdmi 20e0000.hdmi_video: No modes read from edid
[0.536917] mxc_hdmi 20e0000.hdmi_video: create default modelist
[1.695492] systemd-sysv-generator[163]: Overwriting existing symlink /run/systemd/generator.late rc.autohdmi.service with real service

When I cat /sys/class/graphics/fb0/mode → U:1280x720p-60
When I try xrandr → Can’t open Display 0:0

Same with eval board and custom one.

Seems to be a rootfs corrupted. After reflashing on the evaluation board, the display appears on dvi.