linux-kernel - Re: UDL's fbdev doesn't work for user-space apps

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Date:   Tue, 12 Dec 2017 22:12:14 +0100
From:   Pavel Machek <pavel@....cz>
To:     Alexey Brodkin <Alexey.Brodkin@...opsys.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "daniel.vetter@...ll.ch" <daniel.vetter@...ll.ch>,
        "hshi@...omium.org" <hshi@...omium.org>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>,
        "tutankhamen@...omium.org" <tutankhamen@...omium.org>,
        "Jose.Abreu@...opsys.com" <Jose.Abreu@...opsys.com>,
        "airlied@...hat.com" <airlied@...hat.com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "airlied@...il.com" <airlied@...il.com>
Subject: Re: UDL's fbdev doesn't work for user-space apps

On Tue 2017-12-12 19:48:05, Alexey Brodkin wrote:
> Hi Pavel,
> 
> On Sat, 2017-12-09 at 18:20 +0100, Pavel Machek wrote:
> > On Mon 2017-12-04 11:50:40, Jose Abreu wrote:
> > > 
> > > Hi Alexey,
> > > 
> > > On 04-12-2017 11:32, Alexey Brodkin wrote:
> > > > 
> > > > My first [probably incorrect] assumption is Xserver requires fbdev (/dev/fbX)
> > > > and it cannot use DRI video card natively. Is that correct?
> > > > 
> > > > 
> > > 
> > > Xserver can use DRI directly, you need to enable modesetting
> > > driver in Xorg config or use the designated driver for your card
> > > (if there is any).
> > 
> > Still, dev/fb1 should work.
> 
> Agree, but it doesn't :)
> Even on completely different architectures (ARC and ARM).

Yeah, would be nice to get it fixed :-). I remember it did not work
for me, either, and .. that's some time ago.

Architecture probably plays no role there.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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