[yocto] Raspberry Pi2 Fails to boot into LXDE.

[Yusuke Mitsuki]

Hello Steve

Would you try to other HDMI display such as PC monitor.

I suspects two points as follows.

* You enabled KMS(such as vc4graphics in MACHINE_FEATURE)
* Your display has not EDID.

If your HDMI settings in config.txt such as follows. There is a high
possibility that your HDMI display does not have EDID.

```
hdmi_group=2
hdmi_mode=87
```

When your display has not EDID, KMS will fail in initalization.
In such case, you have to create EDID file manually.

I hope this helps.


2017/03/10 14:43 "Gary Thomas" <gary at mlbassoc.com>:

> On 2017-03-10 01:55, Steve Plant wrote:
>
>> OK, I have spent the last day googling my heart out trying to find the
>> Xorg.log file without any luck.
>>
>>
>> The problem is that due to the rpi hanging on boot, the only way I can
>> access the SD card to look for the file is place
>> it in a USB SD card reader and use my VirtualBox based Debian to "ls"
>> directores etc.
>>
>> Having established that there is no file located at /var/log/Xorg.log
>> (there isn't a log directory) but there is a
>> symbolic link in the var directory - goes nowhere.
>>
>>
>> After goggling I discovered that the file could also be in the
>> ~/.local/share/xorg/Xorg.0.log, however if I try to look
>> there I get "permission denied" and cannot seem to get to the root
>> directory of the card and I can't find a way around
>> this as I'm trying to access this directory through the USB card reader.
>>
>>
>> Looked everywhere with no answers, Is there anyone who could help me
>> here??
>>
>
> /var/log is on a volatile file system (i.e. it does not live on the SD
> card)
>
> If you can get into your board via SSH, you can copy the file and send it
>
> ------------------------------------------------------------
>> ------------------------------------------------------------
>> *From:* Khem Raj <raj.khem at gmail.com>
>> *Sent:* Wednesday, 8 March 2017 5:17 p.m.
>> *To:* Steve Plant
>> *Cc:* yocto at yoctoproject.org
>> *Subject:* Re: [yocto] Raspberry Pi2 Fails to boot into LXDE.
>>
>> On 17-03-08 12:40:51, Steve Plant wrote:
>>
>>> Hi All,
>>>
>>>
>>> Very new to all this linux world, and especially Yocto.
>>>
>>>
>>> I'm working on a embedded project at the moment using a raspberry pi2
>>> board.
>>>
>>>
>>> I have used toaster with Morty 2.2 to compile an image
>>> using"rpi-basic-image", to this I have added the following bitbake
>>> variables:
>>>
>>> Bitbake variables
>>>
>>> DISTRO
>>> poky
>>> DL_DIR
>>> /home/steve/poky/downloads
>>> IMAGE_FSTYPES
>>> ext3 jffs2 tar.bz2 rpi-sdimg
>>> IMAGE_INSTALL_append
>>> packagegroup-core-x11-base packagegroup-lxde-base connman
>>> PACKAGE_CLASSES
>>> package_rpm
>>> SSTATE_DIR
>>> /home/steve/poky/sstate-cache
>>>
>>> DISABLE_OVERSCAN
>>> 1
>>> GPU_MEM_1024
>>> 512
>>>
>>> I have dd'ed the image to an SD card increased the sdb2 partition to the
>>> max size and powered up the rpi. Everything looks fine to start with, as it
>>> displays the four raspberrys in the top left, then the white "Yocto
>>> Project" splash screen complete with small blue dot to the side appears,
>>> the progress bar moves across to 100 percent, then the screen turns black
>>> with a white
>>>
>> cursor in the middle and it appears to freeze with only a very dim one
>> second flash of the "act" led.
>>
>>>
>>>
>>> I have then connected the 7" touchscreen and apart from the added
>>> multicolored square at the very beginning I get the exact same boot up
>>> problem, hangs on the black screen with white cursor (good to see its all
>>> resized correctly for the TfT through!!)
>>>
>>>
>>> Before adding the packagegroup-core-x11-base and packagegroup-lxde-base
>>> I successfully copied over and ran the rpi-basic-image with no problem,
>>> ending up with a usable console.
>>>
>>>
>>> Looking for any help here, I'm thinking I've missed adding a package, or
>>> some type of local.conf instruction. any suggestions would be
>>> appreciated.............
>>>
>>
>> Can you send the content of /var/log/Xorg.log file ?
>>
>
>
> --
> ------------------------------------------------------------
> Gary Thomas                 |  Consulting for the
> MLB Associates              |    Embedded world
> ------------------------------------------------------------
> --
> _______________________________________________
> yocto mailing list
> yocto at yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.yoctoproject.org/pipermail/yocto/attachments/20170310/a000517a/attachment.html>