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   <TITLE> [Mageia-dev] GNOME llvmpipe rendering in gnome-session-3.6.0-2.mga3
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   <H1>[Mageia-dev] GNOME llvmpipe rendering in gnome-session-3.6.0-2.mga3</H1>
    <B>Olav Vitters</B> 
    <A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20GNOME%20llvmpipe%20rendering%20in%0A%20gnome-session-3.6.0-2.mga3&In-Reply-To=%3C20121009133927.GA32503%40bkor.dhs.org%3E"
       TITLE="[Mageia-dev] GNOME llvmpipe rendering in gnome-session-3.6.0-2.mga3">olav at vitters.nl
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    <I>Tue Oct  9 15:39:27 CEST 2012</I>
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<PRE>On Tue, Oct 09, 2012 at 12:08:42AM -0400, andre999 wrote:
&gt;<i> zago a &#233;crit :
</I>&gt;<i> &gt;On Mon, Oct 08, 2012 at 12:32:16PM -0400, andre999 wrote:
</I>&gt;<i> &gt;&gt;Olav Vitters a &#233;crit :
</I>&gt;<i> &gt;&gt;&gt;On Mon, Oct 08, 2012 at 02:32:24PM +0200, ovitters wrote:
</I>&gt;<i> &gt;&gt;&gt;&gt;Name        : gnome-session                Relocations: (not relocatable)
</I>&gt;<i> &gt;&gt;&gt;&gt;Version     : 3.6.0                             Vendor: Mageia.Org
</I>&gt;<i> &gt;&gt;&gt;&gt;Release     : 2.mga3                        Build Date: Mon Oct  8 14:26:33 2012
</I>&gt;<i> &gt;&gt;&gt;
</I>&gt;<i> &gt;&gt;&gt;&gt;ovitters &lt;ovitters&gt; 3.6.0-2.mga3:
</I>&gt;<i> &gt;&gt;&gt;&gt;+ Revision: 303504
</I>&gt;<i> &gt;&gt;&gt;&gt;- add patch to unblacklist llvmpipe
</I>&gt;<i> &gt;&gt;&gt;
</I>&gt;<i> &gt;&gt;&gt;I've unblacklisted llvmpipe like Fedora has done for a few releases. In
</I>&gt;<i> &gt;&gt;&gt;some cases I noticed my normal driver not working (reason unknown), so
</I>&gt;<i> &gt;&gt;&gt;in case GNOME is sometimes slow, check if it isn't rendering using
</I>&gt;<i> &gt;&gt;&gt;llvmpipe.
</I>&gt;<i> &gt;&gt;&gt;
</I>&gt;<i> &gt;&gt;On my system, running mga2, unblacklisting llvmpipe (so as to use
</I>&gt;<i> &gt;&gt;regular gnome3, instead of classic/fallback mode) makes all display
</I>&gt;<i> &gt;&gt;in regular gnome3 run extremely slow.
</I>&gt;<i> 
</I>&gt;<i> This includes the virtual console, or scrolling in gedit, neither of
</I>&gt;<i> which has any need for accelerated display.
</I>&gt;<i> 
</I>&gt;<i> &gt;&gt;It must be that llvmpipe is used for all display, even when
</I>&gt;<i> &gt;&gt;acceleration isn't indicated.
</I>&gt;<i> &gt;
</I>&gt;<i> &gt;Hmm, that is not good. I'll test for a few days, otherwise I'll revert.
</I>&gt;<i> &gt;
</I>&gt;<i> &gt;What is reported in System Settings &#8594; Details under Graphics? llvmpipe
</I>&gt;<i> &gt;or something else?
</I>&gt;<i> 
</I>&gt;<i> It says
</I>&gt;<i> &quot;Carte graphique  Gallium 0.4 on llvmpipe (LLVM 0x300)&quot;
</I>&gt;<i> 
</I>&gt;<i> Strangely enough, I have now uninstalled llvmpipe and am running
</I>&gt;<i> gnome3 in fallback/classic mode.
</I>&gt;<i> But it said the same thing before uninstalling.
</I>&gt;<i> I guess that the message is only set/reset under regular gnome.
</I>&gt;<i> I don't think classic mode was slow with llvmpipe installed, but
</I>&gt;<i> uninstalled it since llvmpipe was in the libllvm-devel package
</I>&gt;<i> (version 3.0 on mga2), which is huge (1 G in size).
</I>&gt;<i> The equivalent package on fedora is apparently llvm-devel.
</I>&gt;<i> (I uninstalled it to leave more space on /.)
</I>
So it seems to be using llvmpipe eventhough better methods are
available. That is not what is supposed to be done :-(

I'll check, otherwise I'll revert for now.

&gt;<i> &gt;
</I>&gt;<i> &gt;&gt;BTW, regular gnome3 might well be called &quot;tablet mode&quot;.  A lot of
</I>&gt;<i> &gt;&gt;extensions have been developped to revert to a display more like
</I>&gt;<i> &gt;&gt;gnome2.
</I>&gt;<i> &gt;
</I>&gt;<i> &gt;I am not using a tablet and suggest you first try it on a tablet.
</I>&gt;<i> &gt;
</I>&gt;<i> My wife has a tablet-like android computer.  The default regular
</I>&gt;<i> gnome3 has the same appearance (and awkwardness to quickly access
</I>&gt;<i> applications).
</I>&gt;<i> Sorry, but don't have access to a tablet powerful enough to run gnome3.
</I>&gt;<i> I looked at a number of extensions, and it was surprising how many
</I>&gt;<i> were oriented to bringing back a more gnome2-like (and/or less
</I>&gt;<i> tablet-like) appearance.
</I>
Judging based on appearance is not enough. One example: On a tablet
computer you rely completely on the on screen keyboard. The on screen
keyboard in GNOME 3 cannot be relied upon. A really reliable on screen
keyboard would be great for accessibility reasons...

Now if you really use a touch interface, you'll indeed have the same
thing with GNOME 3 as with e.g. Android. But with either a mouse of a
keyboard I don't see any difficulties. Obviously it works differently,
but I have an Android phone and use GNOME 3 and the experience is not
the same. There is more to it than showing applications as icons in a
grid.

&gt;<i> So there are already solutions for most of the appearance problems.
</I>&gt;<i> (And if necessary, I'll modify some to regain a convenient
</I>&gt;<i> environment.)
</I>
GNOME 3 allows for way more customizations than ever before.

&gt;<i> I'm surprised at the performance problems of llvmpipe.  Although my
</I>&gt;<i> cpu is 32-bit and 64-bit is recommended, it does have the
</I>&gt;<i> recommended sse2 function.
</I>&gt;<i> See <A HREF="http://www.mesa3d.org/llvmpipe.html">http://www.mesa3d.org/llvmpipe.html</A>
</I>&gt;<i> 
</I>&gt;<i> (It has taken me ages to get gnome3 -- classic -- in a usable state.
</I>&gt;<i> Next to regain access to svn.)
</I>
I tried it under Fedora and it was not slow. Currently we're long away
from a stable release so IMO it is the right time for some testing, but
it should at least not use llvmpipe when something better is available.

-- 
Regards,
Olav
</PRE>



















































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