Bug 25275

Summary:

[NV30] Graphical artefacts on PPC64

Product:

xorg

Reporter:

Francesco Biscani <bluescarni>

Component:

Driver/nouveau

Assignee:

Nouveau Project <nouveau>

Status:

RESOLVED INVALID

QA Contact:

Xorg Project Team <xorg-team>

Severity:

normal

Priority:

medium

Version:

7.4 (2008.09)

Hardware:

PowerPC

OS:

Linux (All)

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
Graphical glitch in Firefox's preference button.	none
Graphical glitch in KDE's taskbar.	none

Description Francesco Biscani 2009-11-25 04:41:29 UTC

I installed the latest git revision (as of 25/11/2009) of the nouveau driver on a Gentoo Linux PPC64 (Apple Dual Mac G5) system. The card is an NV34, lspci reports:

0000:f0:10.0 VGA compatible controller: nVidia Corporation NV34 [GeForce FX 5200 Ultra] (rev a1)

The driver seems to work quite well in a dual head configuration LCD monitor + beamer (recognized as DVI-I-0 and DVI-I-1 by xrandr). 2D performance is really nice and xrandr seems to work well :)

The only problem is that sometimes minor graphical artefacts pop up, in a more or less random fashion. Such artefacts include:

- black pixels appearing sometimes at the border of buttons,
- small strangely-coloured stripes in KDE's taskbar and system tray,
- text colour sometimes changing and in some rare cases text disappearing from graphical widgets.

I was able to capture a couple of such occurrences (see attachments). It seems like using the option "ExaNoComposite" fixes the problems (but unfortunately I was not able to test this configuration extensively). Simply disabling composite in the server flags does not seem to make a difference.

It seems like issues were already reported on PPC64:

http://bugs.freedesktop.org/show_bug.cgi?id=17571

But that report is rather old, and I'm not sure the information there contained is relevant any more.

Comment 1 Francesco Biscani 2009-11-25 04:42:17 UTC

Created attachment 31465 [details]
Graphical glitch in Firefox's preference button.

Comment 2 Francesco Biscani 2009-11-25 04:42:43 UTC

Created attachment 31466 [details]
Graphical glitch in KDE's taskbar.

Comment 3 Marcin Slusarz 2009-11-28 12:27:06 UTC

I had these glitches on NV34 too, but they disappeared after upgrading xorg-server from 1.6.x to 1.7.1.

It was on x86-64 and only with gtk2 apps.
gtk-demo reproduced these glitches reliably.

Comment 4 Francesco Biscani 2009-11-28 16:34:44 UTC

Marcin: not sure it is the same bug you were experiencing. I'm running xorg-server 1.7.1 and I get artefacts (also) with KDE4/Qt4 apps.

Comment 5 Ilia Mirkin 2013-08-18 18:09:38 UTC

It appears that this bug report has laid dormant for quite a while. Sorry we haven't gotten to it. Since we fix bugs all the time, chances are pretty good that your issue has been fixed with the latest software. Please give it a shot. (Linux kernel 3.10.7, xf86-video-nouveau 1.0.9, mesa 9.1.6, or their git versions.) If upgrading to the latest isn't an option for you, your distro's bugzilla is probably the right destination for your bug report.

In an effort to clean up our bug list, we're pre-emptively closing all bugs that haven't seen updates since 2011. If the original issue remains, please make sure to provide fresh info, see http://nouveau.freedesktop.org/wiki/Bugs/ for what we need to see, and re-open this one.

Thanks,

The Nouveau Team

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.