Bug 18554

Summary:

Red flicker with radeon driver (Radeon 9000 Pro AGP) and DVI on PowerMac G4

Product:

xorg

Reporter:

linuxuser330250 <linuxuser330250>

Component:

Driver/Radeon

Assignee:

xf86-video-ati maintainers <xorg-driver-ati>

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
xorg.conf	none
Xorg.0.log	none

Description linuxuser330250 2008-11-16 13:25:31 UTC

Created attachment 20340 [details]
xorg.conf

The hardware:
Apple Power Mac G4 MDD (PowerMac3,6) - see http://support.apple.com/kb/SP63 - mine is the Dual 1 GHz model.

The software:
Gentoo Linux 2008.0 (started about 1 year ago with 2007.1)
Kernel 2.6.27 (started with 2.6.22)
X.org 7.4 (started with 7.2)
radeon driver: x11-drivers/xf86-video-ati-6.9.0 (started with 6.7.197, 6.8.0)

When there was no problem:
The Radeon 9000 Pro AGP 4x has a DVI output connector and an ADC (Apple Display Connector). It originally shipped with a DVI-to-VGA adaptor.
The output was okay with this DVI-to-VGA adaptor and a CRT monitor.

THE PROBLEM:
I then bought a TFT monitor -
http://www.fujitsu-siemens.com/home/products/displays/tft/scaleoview_h22-1w.html
I connected it directly via DVI.
I wasn't able to get a screen upon initialization without red flicker since.

Symptoms:
*) red flickering after first X initialization.
*) red flickering is gone when changing the screen resoltion.
e.g. "xrandr -s 1280x1024" and then "xrandr -s 1680x1050" (panel resolution) fixes the red flickering; same with Ctrl-Alt-+ and Crtl-Alt--
*) I today discovered that setting Option "ReducedBlanking" in 
the /etc/X11/xorg.conf Monitor Section resolved the red flickering on first 
initialization.
*) the red flickering _always_ reappears after console switching (when 
returning to the X console).


Others with the same problem:
davidgurvich: http://forums.gentoo.org/viewtopic-p-5282763.html
Giuliano: http://lists.freedesktop.org/archives/xorg/2007-January/020641.html

Comment 1 linuxuser330250 2008-11-16 13:39:40 UTC

Created attachment 20341 [details]
Xorg.0.log

Comment 2 linuxuser330250 2008-11-17 10:08:35 UTC

Correction to the previous statement:

Option "ReducedBlanking" doesn't change anything. I had forgotten that I had put the lines "xrandr -s 1280x1024 ; xrandr -s 1680x1050" into my /usr/kde/3.5/share/config/kdm/Xsetup which then (quite quickly) changed resoultion and thus removed the red flickering from the screen.
Sorry for the false statement.

BTW, Giuliano told me that the older radeon driver 6.3.3 works on ppc with DVI, so I will try that one as the next step.

Andreas.

Comment 3 linuxuser330250 2008-11-17 11:24:02 UTC

Okay, it was off course x11-drivers/xf86-video-ati-6.6.3 (not 6.3.3). But anyway, it fails compilation right at the start with x11-base/xorg-server-1.5.2 (X.org 7.4) due to changed structs in atibus.c, atichip.c, and some more...

Comment 4 Adam Jackson 2018-06-12 19:06:40 UTC

Mass closure: This bug has been untouched for more than six years, and is not
obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.

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.