How to setup independent screens with the Intel driver?

[Boszormenyi Zoltan]

2015-10-30 18:17 keltezéssel, Boszormenyi Zoltan írta:
> 2015-10-30 18:03 keltezéssel, Chris Wilson írta:
>> On Fri, Oct 30, 2015 at 05:56:35PM +0100, Boszormenyi Zoltan wrote:
>>> 2015-10-30 17:46 keltezéssel, Boszormenyi Zoltan írta:
>>>> 2015-10-30 17:36 keltezéssel, Chris Wilson írta:
>>>>> On Fri, Oct 30, 2015 at 04:58:49PM +0100, Boszormenyi Zoltan wrote:
>>>>>> Section "Device"
>>>>>>         Identifier "Intel0"
>>>>>>         Driver     "intel"
>>>>>>         BusID      "PCI:0:2:0"
>>>>>>         Screen     0
>>>>>>         Option      "AccelMethod"  "sna"
>>>>>>         Option     "Monitor-LVDS1" "LVDS1"
>>>>> Option     "ZaphodHeads" "LVDS1"
>>>>>
>>>>>>         Option     "TearFree" "on"
>>>>>> EndSection
>>>>>>
>>>>>> Section "Device"
>>>>>>         Identifier "Intel1"
>>>>>>         Driver     "intel"
>>>>>>         BusID      "PCI:0:2:0"
>>>>>>         Screen     1
>>>>>>         Option      "AccelMethod"  "sna"
>>>>>>         Option     "Monitor-VGA1" "VGA1"
>>>>> Option     "ZaphodHeads" "VGA1"
>>>>>
>>>>>>         Option     "TearFree" "on"
>>>>>> EndSection
>>>>> -Chris
>>>> I tried adding the ZaphodHeads option to the device sections before.
>>>> It didn't work. The driver throws an error:
>>>>
>>>> [3114226.306] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20150522
>>>> [3114226.307] (II) intel(1): Using Kernel Mode Setting driver: i915, version 1.6.0 20150522
>>>> [3114226.307] (--) intel(0): Integrated Graphics Chipset: Intel(R) Pineview G
>>>> [3114226.308] (--) intel(0): CPU: x86-64, sse2, sse3, ssse3; using a maximum of 2 threads
>>>> [3114226.308] (==) intel(0): Depth 24, (--) framebuffer bpp 32
>>>> [3114226.308] (==) intel(0): RGB weight 888
>>>> [3114226.308] (==) intel(0): Default visual is TrueColor
>>>> [3114226.308] (**) intel(0): Option "AccelMethod" "sna"
>>>> [3114226.308] (**) intel(0): Option "ZaphodHeads" "LVDS1"
>>>> [3114226.308] (**) intel(0): Option "TearFree" "on"
>>>> [3114226.309] (EE) intel(0): LVDS1 is an invalid output for screen (pipe) 0
>>> It seems the device pipe and screen matching doesn't work properly.
>>> The driver seems to be assuming that its pipe numbers always match
>>> the same X screen numbers.
>> Assuming? That's how I documented it.
>> -Chris
> "man intel" on Fedora 22 doesn't says anything like that. Where is it documented?
>
> In my case with this particular POS machine, the intended primary display,
> the built-in LVDS with a touchscreen attached is apparently wired to pipe 1.
>
> With this driver behaviour, I can't configure it to be kept as the default :0.0 screen
> if an external display is plugged in. Can this behaviour be changed?

For the record, switching the screen numbers made the setup work.
Now the problem is that the cursor pointer is on the default screen (:0.0, VGA1)
and the touchscreen obviously controls the pointer on the default screen
and you cannot move the pointer to the secondary screen with the touchscreen.
This won't go with the POS software with further configuration.

Now, how can I convince Xorg to move the core pointer to screen 1?

Best regards,
Zoltán Böszörményi