Bug 28992

Summary:	2d is extremely slow with kwin-compositing (bisected)
Product:	xorg	Reporter:	Henning Fleddermann <Henning.Fleddermann>
Component:	Driver/Radeon	Assignee:	xf86-video-ati maintainers <xorg-driver-ati>
Status:	RESOLVED MOVED	QA Contact:	Xorg Project Team <xorg-team>
Severity:	normal
Priority:	medium	CC:	himek_imp, jlp.bugs, oldium.pro
Version:	git
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Henning Fleddermann 2010-07-09 12:38:49 UTC

After updating to 6.13.1, things like opening a right-click menu or a file-dialog (which fade in) became extremely slow. I bisected this to commit 30591320ec46e491ba20904cc64f3405b51c6505.
Author: Jerome Glisse <jglisse@redhat.com>
Date:   Fri May 7 17:35:09 2010 +0200

    kms: add support for the MSC swap & sync API
    
    This patch is mostly a port over of Intel ddx code for
    MSC support. It needs a radeon KMS module with version
    2.4 which has the query for hw crtc id.
    
    Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
    Signed-off-by: Jerome Glisse <jglisse@redhat.com>

:040000 040000 8f59eb7c18b2137eb88e3305db5a776fab25bdad ed1fb660478c944ebf849c5b0b4686f4bafd5e06 M      src

So apparently this is related to the swap&sync stuff. My card is a Radeon X1900 XT. Versions of other relevant software on my system: KDE 4.5 rc1, kernel 2.6.35-rc2, Xorg-Server 1.8.1.902.

Comment 1 Michel Dänzer 2015-04-23 01:55:57 UTC

Is this still an issue with current software versions?

Comment 2 Oldrich Jedlicka 2015-04-25 11:23:24 UTC

I am only on CC, but I think that this is not an issue any more at least for me.

Comment 3 Martin Peres 2019-11-19 07:29:58 UTC

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