xrandr and xwayland

[Carsten Haitzler]

On Fri, 30 Jul 2021 16:28:02 +0000 David Deyo <ddeyo at tireprofiles.com> said:

No - this is up to the compositor itself to do in its own internal ways. Far
too many abuses have happened over the years with xrandr available to any
client anywhere. While in theory a wayland compositor could create an extension
that works like xrandr, it'd be problematic to make it general-access like
xrandr.

> 
> Hello  everyone,
> 
> I need to rotate  my screen 90 degrees and back to normal in xwayland on an
> iMX8 running gatesgarth distro.
> 
> Does anyone know if xrandr can be coerced/modified to make rotations work?
> I’m in the middle of xserver, libX11, libxrandr and xrandr source.
> 
> How would a client communicating to Xwayland as the xserver request a
> rotation?  Does Xwayland listen to a unix socket and pass commands on to the
> kernel?
> 
> (Thanks Hans,)
> 
> -dwd
>                                                                          David
> Deyo [cid:image002.png at 01D78535.F4D09430]
> 
> Firmware Engineer
> TPI- Tire Profiles
> O: 214-396-3063
> E:   ddeyo at tireprofiles.com<mailto:ddeyo at tireprofiles.com> | W:
> www.tireprofiles.com<http://www.tireprofiles.com/> A: 3010 Story Rd W,
> Irving, TX 75038
> 
> 
> From: Hans de Goede<mailto:hdegoede at redhat.com>
> Sent: Friday, July 30, 2021 11:16 AM
> To: David Deyo<mailto:ddeyo at tireprofiles.com>
> Subject: Re: xrandr and xwayland
> 
> CAUTION: This email originated from outside of the organization. Do not click
> links or open attachments unless you recognize the sender and know the
> content is safe.
> 
> 
> Hi,
> 
> On 7/30/21 4:24 PM, David Deyo wrote:
> > Hello Hans,
> >
> >
> >
> > Please help.
> >
> >
> >
> > I found your name in a git log.
> >
> >
> >
> > Do you know if xrandr is expected to work in xwayland?  We really need to
> > find some way to make it work.
> 
> xrandr is not really expected to work in xwayland, monitor resolution
> configuration is done by the compositor under Wayland, not through xrandr.
> 
> There is some emulation for when apps create a single fullscreen window
> and then call xrandr to change the resolution, in that case the apps
> window will be sized to the requested resoution and Xwayland will
> scale the window to fill the entire monitor. This does rely on
> the compositor implementing the viewport extension.
> 
> I hope this helps, if you need more info please send any
> follow up emails to wayland-devel at lists.freedesktop.org
> so that the entire Wayland community sees the email and can
> help you.
> 
> Regards,
> 
> Hans
> 


-- 
------------- Codito, ergo sum - "I code, therefore I am" --------------
Carsten Haitzler - raster at rasterman.com