Qt 5.5.1 and eglfs 0x3003 error with 24bpp FB

Qt 5.5.1 and eglfs 0x3003 error with 24bpp FB

[Schrempf Frieder]

Hi,

I can still experience this problem reported here in 2014 
https://lists.yoctoproject.org/pipermail/meta-freescale/2014-October/010889.html 

in my current setup with a recent jethro build (Qt5.5.1, 
linux-fslc-mx6), whenever the framebuffer is set to 24 bpp.

Does anyone have an idea how to fix this?

Thanks and regards
Frieder Schrempf

Re: Qt 5.5.1 and eglfs 0x3003 error with 24bpp FB

[Richard Röjfors]

On Wed, Jan 20, 2016 at 3:34 PM, Schrempf Frieder
<frieder.schrempf@exceet.de> wrote:
> Hi,
>
> I can still experience this problem reported here in 2014
> https://lists.yoctoproject.org/pipermail/meta-freescale/2014-October/010889.html
>
> in my current setup with a recent jethro build (Qt5.5.1,
> linux-fslc-mx6), whenever the framebuffer is set to 24 bpp.
>
> Does anyone have an idea how to fix this?

If you have memory use 32bits framebuffer? Thats what I do, I also had
issues with 24.

--Richard

Re: Qt 5.5.1 and eglfs 0x3003 error with 24bpp FB

[Carlos Rafael Giani]

On 01/20/2016 03:42 PM, Richard Röjfors wrote:
> On Wed, Jan 20, 2016 at 3:34 PM, Schrempf Frieder
> <frieder.schrempf@exceet.de> wrote:
>> Hi,
>>
>> I can still experience this problem reported here in 2014
>> https://lists.yoctoproject.org/pipermail/meta-freescale/2014-October/010889.html
>>
>> in my current setup with a recent jethro build (Qt5.5.1,
>> linux-fslc-mx6), whenever the framebuffer is set to 24 bpp.
>>
>> Does anyone have an idea how to fix this?
> If you have memory use 32bits framebuffer? Thats what I do, I also had
> issues with 24.
>
> --Richard

I confirm issues with 24 bpp. Using a 32 bpp framebuffer is the most 
efficient workaround.

Re: Qt 5.5.1 and eglfs 0x3003 error with 24bpp FB

[Schrempf Frieder]

On 20.01.2016 15:42, Richard Röjfors wrote:
> On Wed, Jan 20, 2016 at 3:34 PM, Schrempf Frieder
> <frieder.schrempf@exceet.de> wrote:
>> Hi,
>>
>> I can still experience this problem reported here in 2014
>> https://lists.yoctoproject.org/pipermail/meta-freescale/2014-October/010889.html
>>
>> in my current setup with a recent jethro build (Qt5.5.1,
>> linux-fslc-mx6), whenever the framebuffer is set to 24 bpp.
>>
>> Does anyone have an idea how to fix this?
> If you have memory use 32bits framebuffer? Thats what I do, I also had
> issues with 24.
>
> --Richard
That's what I'm currently trying, but somehow the driver seems to ignore 
default_bpp = <32> in the devicetree and also bpp=32 in videoargs, when 
I use HDMI with RGB24 pixel format.
Switching to 32bits manually with fbset works fine.

Re: Qt 5.5.1 and eglfs 0x3003 error with 24bpp FB

[Richard Röjfors]

On Wed, Jan 20, 2016 at 3:52 PM, Schrempf Frieder
<frieder.schrempf@exceet.de> wrote:
> On 20.01.2016 15:42, Richard Röjfors wrote:
>> On Wed, Jan 20, 2016 at 3:34 PM, Schrempf Frieder
>> <frieder.schrempf@exceet.de> wrote:
>>>
>>> Does anyone have an idea how to fix this?
>> If you have memory use 32bits framebuffer? Thats what I do, I also had
>> issues with 24.
>>
>> --Richard
> That's what I'm currently trying, but somehow the driver seems to ignore
> default_bpp = <32> in the devicetree and also bpp=32 in videoargs, when
> I use HDMI with RGB24 pixel format.
> Switching to 32bits manually with fbset works fine.

My node in the dts looks like this:
                interface_pix_fmt = "RGB24";
                mode_str ="1920x1080M@60";
                default_bpp = <32>;

--Richard