ubuntu-phone team mailing list archive

[Gerry Boland <gerry.boland@xxxxxxxxxxxxx>]

Hey Pavel,
I need the Mir team to chip in then, that's a layer under me.
-G


On 08/10/15 12:59, Pavel Andrejs wrote:
> Hi Gerry,
> the dimensions are wrongly detected, the mirout command returns this:
> 
> Connected to server: <default>
> Card 0: Max 2 simultaneous outputs
> Output 0: Card 0, LVDS, connected, 720x1280+0+0, used, off, 0mm x 0mm
> (0.0"), normal
>      720x1280     60.51*+
> Output 1: Card 0, LVDS, disconnected
>      720x1280     60.51*+
> 
> The screen is definitely bigger :) I suppose the problem is somewhere
> in the android layer, but where to look?
> 
> 
> Thanks everyone for advices. :)
> 
> 
> Pavel
> 
> 
> 2015-10-08 13:41 GMT+02:00 Gerry Boland <gerry.boland@xxxxxxxxxxxxx>:
>> On 07/10/15 13:36, Pavel Andrejs wrote:
>>> Hi,
>>> first of all, please, let me know, if I am on a wrong mailing list.
>>> This page https://developer.ubuntu.com/en/start/ubuntu-for-devices/porting-new-device/
>>> lead me here.
>>>
>>> To the problem - I noticed this error message
>>>
>>> DirectionalDragArea: recognition properties are wrongly set. Gesture
>>> recognition is impossible
>>>
>>> in unity8 log. I did some debugging a found that in
>>> unity8/plugins/Ubuntu/Gestures/DirectionalDragArea.cpp there is a
>>> method  DirectionalDragArea::itemChange which calls
>>> value.window->screen()->physicalDotsPerInch(). The last one returns a
>>> bad value. This leads to an inf value pixelsPerMm later and disables
>>> the gesture recognition. For now I solved this with a little hack - I
>>> hardcoded pixelsPerMm to 306 / 25.4. With this the gesture recognition
>>> works. I suppose I would eventually find the correct place for this
>>> value, but some of you may have it faster :-)
>>
>> Hey Pavel,
>> the QScreen::physicalDotsPerInch() calculation requires an accurate
>> value for QScreen::physicalSize(). That is supplied via qtmir/qtubuntu
>> by Mir.
>>
>> Mir tries to get this info from the hardware, but either the hardware
>> doesn't know/lies, or Mir has a bug in retrieving this information.
>>
>> On your device, please run this command:
>> sudo MIR_SOCKET=/run/mir_socket mirout
>>
>> Here is the output I get on my Nexus 7:
>>   Connected to server: <default>
>>   Card 0: Max 2 simultaneous outputs
>>   Output 0: Card 0, LVDS, connected, 1200x1920+0+0, used, on, 95mm x
>> 151mm (7.0"), normal
>>       1200x1920     60.00*+
>>   Output 1: Card 0, DisplayPort, disconnected
>>
>> where you see the physical dimensions of the display being printed. What
>> do you see?
>> -Gerry
>>
>>
>>
>> --
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>>
>

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