http://bugs.freedesktop.org/show_bug.cgi?id=18554
Summary: Red flicker with radeon driver (Radeon 9000 Pro AGP) and
DVI on PowerMac G4
Product: xorg
Version: 7.4
Platform: PowerPC
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Driver/Radeon
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
QAContact: [EMAIL PROTECTED]
Created an attachment (id=20340)
--> (http://bugs.freedesktop.org/attachment.cgi?id=20340)
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
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