Red Hat Bugzilla – Bug 441742
dual-head monitor resolution problems
Last modified: 2010-03-18 13:35:21 EDT
I'm trying to set up dual head (Dell 2407WFP 1920x1200 and Dell 2001FP
1600x1200) and though I do have dual head working fine (without compiz :-( ) I
can't get the monitors to each be their native resolutions. They are always are
both 1920x1200 or 1600x1200. I'll include my xorg.conf next. My card is
05:00.0 VGA compatible controller: ATI Technologies Inc RV370 [Sapphire X550
Silent] (prog-if 00 [VGA controller])
05:00.1 Display controller: ATI Technologies Inc RV370 secondary [Sapphire X550
I've tried having no modes, preferredmodes in each monitor definition, just one,
or the other, and I've had no luck. Also if I start restarting X too many times,
it seems to just stop working until I reboot. Can't switch to VT, etc.
I meant to add these details:
raptor> rpm -q xorg-x11-drv-ati
raptor> rpm -q kernel
raptor> cat /proc/version
Linux version 2.6.25-0.216.rc8.git7.fc9.x86_64 (mockbuild@) (gcc version 4.3.0
20080404 (Red Hat 4.3.0-6) (GCC) ) #1 SMP Wed Apr 9 01:19:32 EDT 2008
Created attachment 301881 [details]
Created attachment 301882 [details]
can you re-try with latest server and ati driver..
also please remove the modes bit from the last section, as this is limiting
everyone to that one mode.
Just tried and I'm still having the same problem. If I have just preferredmodes
with each monitor and no modes in the Screen seciton, I get 1600x1200 on each
monitor. I'll include the Xorg log next.
Created attachment 304800 [details]
To be clear, that Xorg.0.log is from an xorg.conf with appropriate
PreferredModes for each monitor and no modes defined in the Screen section. In
the log it says
(II) RADEON(0): Using user preference for initial modes
(II) RADEON(0): Output DVI-1 using initial mode 1600x1200
(II) RADEON(0): Output DVI-0 using initial mode 1600x1200
but I'm not clear on why it decides that.
Changing version to '9' as part of upcoming Fedora 9 GA.
More information and reason for this action is here:
I just tried the screen resolution caplet which I didn't know got included with
F9 and it allows me to have the screens at the correct resolution once I log in.
So in theory, I should be able to do this from an xorg.conf file, I just need
the right incantation.
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