Gnome 3.8 shell to slow

[shemrana1 at gmail.com]

Hi Shuihuzhuan and everyone.  I have just install rearing ringtail Gnome 3.8. I have never have problem with Gnome too until now. It is too slow eventhough I have 4GB RAM. This resulted me in removing my Cairo-Dock that becomes slower than anything else. I just can't can't do without Cairo dock. Now my hope is on the 13.04 partial upgrade. If things didn't work well, then I wil hav to go back to my 12.04 LTS( GNOME 3.4) which I will deeply regret.
Sent from my BlackBerry® smartphone provided by Airtel Nigeria.

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From: ubuntu-gnome-request at lists.ubuntu.com
Sender: ubuntu-gnome-bounces at lists.ubuntu.comDate: Sat, 15 Jun 2013 12:00:03 
To: <ubuntu-gnome at lists.ubuntu.com>
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Subject: Ubuntu-GNOME Digest, Vol 4, Issue 6

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Today's Topics:

   1. Glitches with gnome-shell 3.8 and nouveau driver?
      (shuihuzhuan at free.fr)


----------------------------------------------------------------------

Message: 1
Date: Fri, 14 Jun 2013 14:04:16 +0200 (CEST)
From: shuihuzhuan at free.fr
To: ubuntu-gnome at lists.ubuntu.com
Subject: Glitches with gnome-shell 3.8 and nouveau driver?
Message-ID:
	<720876148.59980662.1371211456220.JavaMail.root at zimbra14-e2.priv.proxad.net>
	
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Hello,

Yesterday, I've switched my main desktop (64 bits) to gnome-shell 3.8 with gnome3-ppa and now I've noticed some strange glitches that I don't have on my laptop with a similar software configuration (but different hardware and 32 bits).

I have an old nvidia 7600GT graphic card and I'm using nouveau as a driver on this desktop (because the proprietary driver was buggy when switching users with gnome-shell 3.2). nouveau is rather slow but it works fine.

Everything seems fine, except the rendering of some "system" dialogs. For example, when I choose "Shutdown" a system dialog opens to confirm. But when I move the mouse the first time over a button of that dialog (and only the first time), the button disappears and a bad looking rectangle appears instead. Then I move the mouse outside the button, it reappears and the problem never comes back on that button. But if I move the mouse on other buttons of the same dialog, there's the same behaviour.

I've never met such behaviour with all previous gnome-shell versions. I don't have rendering problems with panel/menus/overview/applications... just on those dialog's buttons. I don't know what has changed between 3.6 and 3.8 for such strange thing to appear. It may be related to nouveau or clutter/mutter or rather gnome-shell. But why only on those buttons? 

So while I'll try to investigate further and probably open a bug report, I'd like to know if anyone using nouveau has ever seen a similar problem (Googling around, I've not found any)?

Thanks for your advices.



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