* intel driver 4k MST
@ 2017-03-27 14:47 René Rebe
[not found] ` <BFA157E2-465B-4D8C-B82D-C80CD6766D07-mWpqEAMA8ohl57MIdRCFDg@public.gmane.org>
0 siblings, 1 reply; 4+ messages in thread
From: René Rebe @ 2017-03-27 14:47 UTC (permalink / raw)
To: intel-gfx; +Cc: xorg-devel
Hi all,
connecting a Dell 4k MST display using the xorg intel driver on two different machines (Surface Pro 3, Dell XPS 13 9360) results in one of the two halts mirrored on the two MST halfs of the display. Using xrandr --left-of / --right-of I could not yet find a combination that would correctly show the whole screen.
In contrast using the xorg modesetting driver on the same kernel and xorg-server 4k MST works out of the box.
Is this a know limitation or the intel xorg driver that is just considered obsolete and dead or anything?
If anyone is interested in detailed xrandr output etc. just let me know, …
https://www.youtube.com/edit?o=U&video_id=K645WWl0Ff4
René
--
ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin
http://exactcode.com | http://exactscan.com | http://ocrkit.com | http://t2-project.org | http://rene.rebe.de
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^ permalink raw reply [flat|nested] 4+ messages in thread[parent not found: <BFA157E2-465B-4D8C-B82D-C80CD6766D07-mWpqEAMA8ohl57MIdRCFDg@public.gmane.org>]
* Re: [Intel-gfx] intel driver 4k MST [not found] ` <BFA157E2-465B-4D8C-B82D-C80CD6766D07-mWpqEAMA8ohl57MIdRCFDg@public.gmane.org> @ 2017-03-27 15:26 ` Chris Wilson 2017-03-27 15:40 ` René Rebe 0 siblings, 1 reply; 4+ messages in thread From: Chris Wilson @ 2017-03-27 15:26 UTC (permalink / raw) To: René Rebe Cc: intel-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW, xorg-devel-go0+a7rfsptAfugRpC6u6w On Mon, Mar 27, 2017 at 04:47:44PM +0200, René Rebe wrote: > Hi all, > > connecting a Dell 4k MST display using the xorg intel driver on two different machines (Surface Pro 3, Dell XPS 13 9360) results in one of the two halts mirrored on the two MST halfs of the display. Using xrandr --left-of / --right-of I could not yet find a combination that would correctly show the whole screen. > > In contrast using the xorg modesetting driver on the same kernel and xorg-server 4k MST works out of the box. > > Is this a know limitation or the intel xorg driver that is just considered obsolete and dead or anything? It is not likely a ddx bug... -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ 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 ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: intel driver 4k MST 2017-03-27 15:26 ` [Intel-gfx] " Chris Wilson @ 2017-03-27 15:40 ` René Rebe 2017-03-27 18:36 ` Jani Nikula 0 siblings, 1 reply; 4+ messages in thread From: René Rebe @ 2017-03-27 15:40 UTC (permalink / raw) To: Chris Wilson; +Cc: intel-gfx, xorg-devel Hi, On Mar 27, 2017, at 17:26, Chris Wilson <chris@chris-wilson.co.uk> wrote: > On Mon, Mar 27, 2017 at 04:47:44PM +0200, René Rebe wrote: >> Hi all, >> >> connecting a Dell 4k MST display using the xorg intel driver on two different machines (Surface Pro 3, Dell XPS 13 9360) results in one of the two halts mirrored on the two MST halfs of the display. Using xrandr --left-of / --right-of I could not yet find a combination that would correctly show the whole screen. >> >> In contrast using the xorg modesetting driver on the same kernel and xorg-server 4k MST works out of the box. >> >> Is this a know limitation or the intel xorg driver that is just considered obsolete and dead or anything? > > It is not likely a ddx bug... Meaning? MST works correcting when using the xorg mode setting driver, … so the kernel side should be ok, no? How to move forward? Is the xorg intel driver despite missing releases under active development, or should I just use the lower performance mode setting driver? Interested in any debug output? The display is a Dell UltraSharp 24″ 4K UP2414Q. René -- ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin http://exactcode.com | http://exactscan.com | http://ocrkit.com | http://t2-project.org | http://rene.rebe.de _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: intel driver 4k MST 2017-03-27 15:40 ` René Rebe @ 2017-03-27 18:36 ` Jani Nikula 0 siblings, 0 replies; 4+ messages in thread From: Jani Nikula @ 2017-03-27 18:36 UTC (permalink / raw) To: René Rebe, Chris Wilson; +Cc: intel-gfx, xorg-devel On Mon, 27 Mar 2017, René Rebe <rene@exactcode.com> wrote: > How to move forward? Is the xorg intel driver despite missing releases > under active development, or should I just use the lower performance > mode setting driver? Please file a bug over at [1], attach Xorg.0.log and dmesg with drm.debug=14 module parameter set. Thanks, Jani. [1] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx ^ permalink raw reply [flat|nested] 4+ messages in thread
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2017-03-27 14:47 intel driver 4k MST René Rebe
[not found] ` <BFA157E2-465B-4D8C-B82D-C80CD6766D07-mWpqEAMA8ohl57MIdRCFDg@public.gmane.org>
2017-03-27 15:26 ` [Intel-gfx] " Chris Wilson
2017-03-27 15:40 ` René Rebe
2017-03-27 18:36 ` Jani Nikula
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