1. About ssh, scp, stfp 2. About on module sd card 3. About module flashing 4. About login + password 5. About boot time 6. About video out resolutions 1.Q: I cant connect to the vmx baseboard using scp, ssh, sftp clients. The client always ask for password and do not accept empty password. What should I do to solve this? 1.A: The module that comes out from production do not have set root password. It is possible to set new password by issuing "passwd" command. 2.Q: I want to use onmodule sd card slot as hot plug device, but the card is only detected when booting. No further reinsertion of the card is possible. How can i replug the micro SD card? 2.A: The onmodule sd card slot does not have a card inserion signal so if the kernel is compiled to support onmodule SD slot, than the sd card is detected only when system boots up. But you can emulate sd card removal and insertion using of the following commands echo 1 > /sys/devices/platform/sdhci.0/mmc_host/mmc0/force_cd echo 0 > /sys/devices/platform/sdhci.0/mmc_host/mmc0/force_cd The newly inserted SD card should be detected by the system after this. 3.Q: I erased my module. Now is completely empty. How can i repair it? 3.A: Firsly you must execute barebox using JTAG as it is described in MX-JTAG.txt Than you should follow this document MX-BB-FLASH.txt 3.A: Or flash module using Freescale ATK application MX-ATK.txt 4.Q: What are the default login and password? 4.A: Login: root Password: root 5.Q: How long the vmx25 module boot up? 5.A: Default configuration have boot time (to login prompt) around 15s. Without DHCP negotiation around 10s. In all cases are all drivers are compiled into kernel and bootloader delay is set to 0s. To achieve lower boot times, the removal of the unnecessary drivers and reduction of the debug messages should be considered. There is also a possibility to use another filesystem (openwrt, openembedded). I think that boot time aroud 5s could be easily achieved. 6.Q: I want another vga resolution. How can i do this ? 6.A: The favorite resolution can be passed to the kernel multiple ways. Most favorite is configuring bootloader to modify kernel CMDLINE. Stop booting procedure in bootloader and type following command barebox:/ edit env/config Search for this string bootargs="console=ttymxc0,115200" And modify it to look for example like this bootargs="console=ttymxc0,115200 video=imxfb:WVGA-LCD" Now pres and type following command to make this changes permanent saveenv Other video modes: video=imxfb:VGA-16@60 video=imxfb:WVGA-LCD video=imxfb:SVGA-16@60