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Thanks for the try, but that's a no go. If I use the radeonhd driver
and attempt to set coherent_mode to false, all monitors blank. If I
set it in xorg.conf, the X server hangs. With radeonhd the DVI output
is a clone of LVDS, and both Xrandr and xorg.conf fail when I try to
ignore/turn off the LVDS output. With the default radeonhd and radeon,
I get the flickering and missing rows. I pulled the xf86-video-ati,
but autogen.sh fails with a syntax error on line 12017 with an unknown
token XINERAMA. Unless you, or someone, has a fairly quick fix, I'm
going to drop Fedora 11 and load another flavor. I think Ubuntu is
still using the older server and drivers.<br>
<br>
Ron<br>
<br>
On 08/05/2009 02:10 PM, Alex Deucher wrote:
<blockquote
cite="mid:a728f9f90908051310r726022a9l7cdb5eac037ac311@mail.gmail.com"
type="cite">
<pre wrap="">On Wed, Aug 5, 2009 at 3:24 PM, Ron King<a class="moz-txt-link-rfc2396E" href="mailto:rking@mro.nmt.edu"><rking@mro.nmt.edu></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi,
I'm on Fedora 11, M56 x1600, X server 1.6.2-3, ATI driver 6.12.2-14.
Laptop with docking station and dual Samsung SyncMaster 940Be LCDs.
Docking station has one VGA and one DVI-D. All works fine in XP, Fedora
8 (using Xrandr 1.2, I believe).
LVDS and VGA work fine, alone or dual. DVI produces a vertical twitch,
always. Running the cursor up the screen shows missing horizontal
lines. Modes appear to be correct and match published monitor modes.
Changing modelines with xorg.conf and Xrandr do not seem to have any
effects. Adding modes in Xrandr and using them causes the monitor to
blank, then return and still report the same problem. Monitor reports
31.7kHz and 30Hz regardless of changes. Is this mode hard coded for
DVI-D somewhere?
</pre>
</blockquote>
<pre wrap=""><!---->
It sounds like your monitor doesn't like dvi coherent mode. try:
xrandr --output DVI-0 --set coherent_mode 0
xrandr --output DVI-0 --off
xrandr --output DVI-0 --auto
If that doesn't work, you might try the driver from xf86-video-ati git
master. The display issues may be due to underflow to the display
controller.
Alex
</pre>
</blockquote>
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