Re: Does either Gnome or KDE support Wayland on FreeBSD? [EOM]

On 02/07/2018 16:10, Greg V wrote:
>
>
> On Mon, Jul 2, 2018 at 1:44 AM, Grzegorz Junka <[email protected]> wrote:
>>
>> On 01/07/2018 21:48, Greg V wrote:
>>>
>>> On Sun, Jul 1, 2018 at 2:45 PM, Grzegorz Junka <[email protected]> 
>>> wrote:
>>>>
>>>> On 30/06/2018 20:37, Johannes Lundberg wrote:
>>>>> I don’t know about Gnome or KDE but GTK3 apps work with Wayland. 
>>>>> It needs ports built with custom options though.
>>>>>
>>>>
>>>> Building ports isn't a problem, however I don't understand how 
>>>> particular apps can work with Wayland. I thought that they would 
>>>> need to run inside Weston or some other compositor, which in turn 
>>>> runs on Wayland? Is the X server in that configuration running as 
>>>> a Wayland client with with the GTK3 apps running outside of the X 
>>>> server (i.e. are managed by the compositor directly)?
>>>
>>> Yes, you can run them inside e.g. Weston or Sway.
>>>
>>> Compositors don't run "on" Wayland, Wayland is a protocol.
>>> The compositor is the display server, it implements the server side 
>>> of Wayland.
>>> (Compositors can run in windowed mode under X or under another 
>>> Wayland compositor, for development/debugging purposes.)
>>>
>>> For backwards compatibility, the X server is indeed running as a 
>>> Wayland client, this is called Xwayland, this is optional.
>>>
>>> About KDE: I think KDE's kwin_wayland is available now too, but I'm 
>>> not sure if it would run directly as the main display server (not 
>>> windowed mode) right now on FreeBSD without additional patches 
>>> (because of vt/session management stuff -- though maybe ConsoleKit2 
>>> might work?).
>>>
>>
>> Thanks Greg for the clarification. Let me rephrase it to see if I got 
>> it right. Currently FreeBSD supports Wayland compositor in windowed 
>> mode under X and this is how the GTK3 applications are running. It 
>> might support Wayland as the main display server (not windowed), i.e. 
>> using KDE's kwin_wayland, but the status is currently not known.
>
> I'm currently running Weston as the main display server, so that is 
> known :)
> Well, my fork of weston actually: https://github.com/myfreeweb/weston
> Sway 0.x also worked, 1.x (master) should work too, unless they broke 
> something.
>
> The only unknown is KDE KWin ("might just work with ConsoleKit2?").
> I guess I should look into that, but I'm busy with other stuff..
>
> GNOME is definitely not supported ("needs patching to support 
> ConsoleKit2 or some other alternative to systemd-logind").
> That's actually the main porting issue in general, many compositors 
> use logind, some (like gnome) *only* use logind.
>
>> If that's correct, then assuming that I compiled my ports with 
>> support for Wayland enabled, and assuming further that I have 11.2 
>> installed, what else would I need to do to be able to test this?
>>
>> I guess I need to compile and install drm-next-kmod or 
>> drm-stable-kmod. Will either work on generic 11.2 or I need a custom 
>> kernel? I guess again that the later should work with the generic 
>> kernel but it will only supports Polaris Radeon cards. If I recall 
>> correctly Hans Petter Selasky was working on merging support for 
>> Radeon Vega (Linux kernel 4.15) into 11-STABLE (future 11.3). If that 
>> is correct and the merge was completed then I could compile a custom 
>> 11-STABLE kernel and together with the 11.2 userland be able to test 
>> windowed Wayland on Vega?
>
> For windowed mode, you don't need anything special.
>
> But for *anything on Vega*, you do need drm-next-kmod.
>
> LinuxKPI updates required for drm-next-kmod 4.15 have indeed been 
> merged into 11-STABLE: 
> https://svnweb.freebsd.org/base?view=revision&revision=335436
>
> Vega support is still not as stable as <=Polaris, btw:
>
> https://github.com/FreeBSDDesktop/kms-drm/issues/76
> https://github.com/FreeBSDDesktop/kms-drm/issues/71

Thanks for the pointers. I will be setting up the new system during the 
next few weeks and will try to compile everything as stated. It will be 
interesting to see if/how it currently works. I will surely have more 
questions when the time comes....
GrzegorzJ
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