[meta-intel] Valleyisland graphics in Dora

[IGI/Falk Bauer]

Teemu,
i had similar problems a few days ago with our E3825 based hardware. The most important thing is that you switched to the ltsi kernel where the Bay Trail support is backported from newer kernel versions. Bay Trail support was introduced from version 3.11 i think.
You have to look for the following message in the kernel message buffer:
[drm:i915_pci_probe] *ERROR* Preliminary hardware support disabled
This means that the device file /dev/dri/card0 is not created and so the intel driver says that the device is not found. This message appears if you use the standard/base kernel version in yocto.

To switch to the ltsi kernel you have to set the following statement in the meta-isg/meta-valleyisland/recipes-kernel/linux/linux-yocto_3.10.bbappend:
KBRANCH_valleyisland-32 = "standard/ltsi"
SRCREV is also changed to the commit id for the tagged version of ltsi 3.10.32:
SRCREV_machine_valleyisland-32 = "78afd3095c9b37efbbfbfdc25eb3833ef3c6a718"

Yet I do not know how to manage such changes in a layer overlay. I have directly hacked the bbappend file currently.

Hope this is of help for you.

Falk


------------------------------------------------------
IGI - Ingenieur-Gesellschaft fuer Interfaces mbH
Dipl.-Ing. Falk Bauer Applications Engineer
Langenauer Str. 46
57223 Kreuztal, Germany
Tel.: +49 2732 5525 0
Fax: +49 2732 5525 25
E-mail: f.bauer at igi-systems.com
Internet: www.igi-systems.com
-----------------------------------------------------------Ursprüngliche Nachricht-----
Von: meta-intel-bounces at yoctoproject.org [mailto:meta-intel-bounces at yoctoproject.org] Im Auftrag von Keskinarkaus, Teemu
Gesendet: Donnerstag, 3. April 2014 13:04
An: meta-intel at yoctoproject.org
Betreff: [meta-intel] Valleyisland graphics in Dora

Hi,

I noticed that Dora branch has also finally got its Valleyisland support so I downloaded latest Dora-branch of meta-intel and also updated Dora-branch of Poky.

I then rebuild my own image of it and it booted ok. The thing is that when I try to use any gl applications (for example glxinfo or glxgears) I get the following error:

sh-4.2# glxinfo
name of display: :0.0
Error: couldn't find RGB GLX visual or fbconfig
Error: couldn't find RGB GLX visual or fbconfig

What am I missing or is there a bug somewhere?

I also have to use Vesa-driver for Xorg and not Intel driver. If I try to use Intel driver it says device not found. Any idea what might cause that? I thought that the Intel driver should support that HW with acceleration? I think Vesa-driver doesn't support acceleration or doe it? The HW I use have beta version of BIOS so could that be the display part of the BIOS is missing some display things or is that bug/configuration issue in software?

I'm running Yocto on E3826 HW.

Teemu Keskinarkaus
Software system engineer

maximatecc - Humans in control


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