Linux freezes when connected to HDMI

hi cristian,

I guess you have downloaded from here : https://www.dropbox.com/sh/nuhzba8uqpijenb/AAAt8l9g6u6T6-DOqJHozyKca/fsl-image-fb-riotboard.sdcard?dl=1

If I connect the HDMI after Linux starts running it also freezes.

The HDMI screen freezes or Riotboard booting ??

it only boots if HDMI is not connected.

The HDMI GUI support is not yet enabled in kernel.

on display devices it will show a terminal with Yocto signature as shown below.

Hello Tushar

Greetings

From your post I understand that the kernel does not have HDMI support enabled. Could you confirm if BSP Linux Yocto v3.10.17 available at RIoTboard BSP Images and Tools Download - Android and Linux has the same issue too. The booting freezes at "starting kernel" when the HDMI cable is connected.

Regards

Karthik

Hello Tushar

Greetings

From your post I understand that the kernel does not have HDMI support enabled. Could you confirm if BSP Linux Yocto v3.10.17 available at RIoTboard BSP Images and Tools Download - Android and Linux has the same issue too. The booting freezes at "starting kernel" when the HDMI cable is connected.

Regards

Karthik

The BSP in Download center is SVN2652(deprecated), it has no GUI support, (hdmi is a later thing).

This BSP (tutorial) is SVN3000 &  has GUI support for HDMI & LVDS .

Hey.

I have the same problem as stated above.

Riotboard, Yocto Image from E14 homepage, Linux 3.10.17 yocto BSP  image_SVN2652.zip

uart tells me:

-----------

CPU: Freescale i.MX6SOLO rev1.1 at 792 MHz
CPU: Temperature 43 C, calibration data: 0x5845075f
Reset cause: POR
Board: MX6SOLO RIoTboard
I2C: ready
DRAM: 1 GiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
No panel detected: default to HDMI
Display: HDMI (640x480)
In: serial
Out: serial
Err: serial
mmc2(part 0) is current device
Net: FEC [PRIME]
Warning: failed to set MAC address

Normal Boot
Hit any key to stop autoboot: 0
mmc2(part 0) is current device
reading boot.scr
** Unable to read file boot.scr **
reading uImage
5275824 bytes read in 275 ms (18.3 MiB/s)
Booting from mmc ...
reading imx6solo_RIoTboard.dtb
43553 bytes read in 21 ms (2 MiB/s)
## Booting kernel from Legacy Image at 12000000 ...
Image Name: Linux-3.10.17_1.0.0_RIoTboard+g9
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 5275760 Bytes = 5 MiB
Load Address: 10008000
Entry Point: 10008000
Verifying Checksum ... OK
## Flattened Device Tree blob at 18000000
Booting using the fdt blob at 0x18000000
Loading Kernel Image ... OK
OK
Using Device Tree in place at 18000000, end 1800da20

Starting kernel ...

Booting Linux on physical CPU 0x0
Linux version 3.10.17_1.0.0_RIoTboard+g9ba99b4 (luofc@embest-tech) (gcc version 4.8.1 (GCC) ) #1 SMP PREEMPT Thu Jun 19 09:46:07 CST 2014

...

...

Starting Linux NFC daemon
Starting OProfileUI server
Running local boot scripts (/etc/rc.local).
Stopping Bootlog daemon: bootlogd.

Poky (Yocto Project Reference Distro) 1.5.1 riotboard /dev/ttymxc1

riotboard login: root
root@riotboard:~#

-------------------

Board boots without any errors into riotboard User root.

As soon as HDMI is connected Linux hangs up...

When I stop by in uBoot and  stop by the HDMI Monitor has the chance to display a standard freescale bootscreen (freescale Logo and script plus Some uBoot Info: U.Boot 2013.04-04988-gd2e8066-dirty (Jul 04 2014 - 09:18:53)

Continuing to boot fails at

Starting kernel...

It's funny that although connected the Riotboard tells me the no HDMI display is connected.

the Riotboard sends some messages when connecting USB pheripherals as well as HDMI Monitor (EDID related and that sort of thing....) But this messages I cannot reproduce at the moment....

Any solution known to why Yocto won't start?

I had   trouble with HDMI since the start which makes me believe the board may be broken.

Under Ubunto and Android I wasn't able to setup anything larger than 640x480, which is the default resolution on HDMI but at least I had graphichs displayed in these two systems.

Christian

PS/EDIT: I used MFG tool to flash from Windows as my PC at work doesn't support Linux yet (legal thingy). I cannot flash SVN3000 (yet) from windows