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Linux freezes when connected to HDMI

Former Member

I have loaded the Linux image SVN2652 on Riotboard, but it only boots if HDMI is not connected.

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

The kernel is: 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.

I have tried it on two other boards with the same result. If I stop the boot it displays the Freescale logo, so the hardware seems to work.

Could it be a driver problem?

Is there a fix for this?

Thanks.

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  • 0 in reply to tusharp

    Hey Panda,

     

    after a long time I continued with riotboard. I tried your riotboard_yocto_gui_SVN3000.zip image without success image .

     

    U-Boot 2013.04 (Nov 25 2014 - 15:03:06)

     

    CPU:   Freescale i.MX6SOLO rev1.1 at 792 MHz

    CPU:   Temperature 35 C, calibration data: 0x5a65205f

    Reset cause: POR

    Board: MX6SOLO RIoTboard

    I2C:   ready

    DRAM:  1 GiB

    MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2

    *** Warning - bad CRC, using default environment

     

    No panel detected: default to HDMI

    Display: HDMI (640x480)

    In:    serial

    Out:   serial

    Err:   serial

    mmc0 is current device

    Net:   FEC [PRIME]

    Warning: failed to set MAC address

     

    Normal Boot

    Hit any key to stop autoboot:  0

    mmc0 is current device

    reading boot.scr

    ** Unable to read file boot.scr **

    reading uImage

    5417664 bytes read in 272 ms (19 MiB/s)

    Booting from mmc ...

    reading imx6solo_RIoTboard.dtb

    46315 bytes read in 20 ms (2.2 MiB/s)

    ## Booting kernel from Legacy Image at 12000000 ...

       Image Name:   Linux-3.10.17_1.0.0_RIoTboard+gb

       Image Type:   ARM Linux Kernel Image (uncompressed)

       Data Size:    5417600 Bytes = 5.2 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 1800e4ea

     

    Starting kernel ...

     

     

    I copied the file with following line:

    # dd if=riotboard_yocto.img of=/dev/mmcblk0 bs=1M

    1348+0 Datensätze ein

    1348+0 Datensätze aus

    1413480448 Bytes (1,4 GB) kopiert, 120,889 s, 11,7 MB/s

     

     

    Without HDMI connected I can login via serial interface. When HDMI connected during runtime the serial console freezes. HDMI connected during startup lead to the log above.

    Do you have any idea? Thanks alot!

     

    Cheers

    Flo

  • 0 in reply to Former Member

    You mentioned earlier in the thread that you were able to create a custom Yocto build.  It might pay to create a new (current) build using T.P.'s instructions and see if that yields better results.  I had the same problem you are experiencing when trying to use an HDMI-to-DVI cable, but I was able to work around it by creating a custom build in February 2016:

     

    RIoTboard Yocto Build on openSUSE 13.2 x86_64 Host

     

    Simply creating and using the custom build resolved the issue, no debugging required.

     

    Good luck.

  • 0 in reply to stmorgan

    Hey Stewart!

    Thanks alot for your tip! I will try it! image

     

    Cheers

    Flo

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