On 06.12.2016 16:22, Hans de Goede wrote: > From: Dave Airlie <airl...@redhat.com> > > This is a modified version of a patch we've been carry-ing in Fedora and > RHEL for years now. This patch automatically adds secondary GPUs to the > master as output sink / offload source making e.g. the use of > slave-outputs just work, with requiring the user to manually run > "xrandr --setprovideroutputsource" before he can hookup an external > monitor to his hybrid graphics laptop. > > There is one problem with this patch, which is why it was not upstreamed > before. What to do when a secondary GPU gets detected really is a policy > decission (e.g. one may want to autobind PCI GPUs but not USB ones) and > as such should be under control of the Desktop Environment. > > Unconditionally adding autobinding support to the xserver will result > in races between the DE dealing with the hotplug of a secondary GPU > and the server itself dealing with it. > > However we've waited for years for any Desktop Environments to actually > start doing some sort of autoconfiguration of secondary GPUs and there > is still not a single DE dealing with this, so I believe that it is > time to upstream this now. > > To avoid potential future problems if any DEs get support for doing > secondary GPU configuration themselves, the new autobind functionality > is made optional. Since no DEs currently support doing this themselves it > is enabled by default. When DEs grow support for doing this themselves > they can disable the servers autobinding through the servers cmdline or a > xorg.conf snippet. > > Signed-off-by: Dave Airlie <airl...@gmail.com> > [hdego...@redhat.com: Make configurable, fix with nvidia, submit upstream] > Signed-off-by: Hans de Goede <hdego...@redhat.com> > --- > Changes in v2: > -Make the default enabled instead of installing a xorg.conf > snippet which enables it unconditionally > Changes in v3: > -Handle GPUScreen autoconfig in randr/rrprovider.c, looking at > rrScrPriv->provider, rather then in hw/xfree86/modes/xf86Crtc.c > looking at xf86CrtcConfig->provider. This fixes the autoconfig not > working with the nvidia binary driver
Tested-by: Timo Aaltonen <tjaal...@ubuntu.com> Ubuntu has had the old version for some years, and now this one works with 1.19.x so would like to see it upstream. -- t _______________________________________________ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: https://lists.x.org/mailman/listinfo/xorg-devel