On Tue, Jan 17, 2017 at 5:49 AM, Tyler <Tyler_Kdog@yahoo.com> wrote:
On 16/01/17 02:55 PM, Felix Miata wrote:
Preferred FOSS Xorg drivers have been transitioning[1] from discrete gfxchip-specific to the generic modesetting driver that was moved from a separate package directly into Xorg back in server 1.17. You might try uninstalling the AMD/ATI/Radeon driver (xf86-video-ati)
[1] https://lists.opensuse.org/opensuse-factory/2017-01/msg00163.html
While the modesetting driver should work (and most certainly does for me), do note the recently expressed opinion on what the "preferred" DDX for AMD GPUs is: https://lwn.net/Articles/704883/
see if automatic use of the third display is restored
It won't be. Stratos is mistaken -- it is still the case that, with 2 GPUs, you manually (or some configuration utility) must bridge the two together via "xrandr --setprovideroutputsource displays renders"
With the previous X version there was no need of this or a configuration utility, as you say, was doing that automatically. Even if sometimes kscreen was meshing the configuration layout (known KDE issue), all 3 monitors (2 on primary GPU and one on the secondary) were activated. After upgrading to X 1.19 the secondary GPU needs to be activates with xrandr, so something changed.
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