Red Hat Bugzilla – Bug 465239
Excessive resolution chosen for HP A4576A 21" CRT connected to ATI X800
Last modified: 2009-01-09 04:26:12 EST
Created attachment 319213 [details]
F10-Beta Xorg.0.log w/o xorg.conf
Description of problem:
When booting from the F10-Beta live CD, X is set up to use a resolution of 1865x1392 pixels at 60 Hz which appears somewhat peculiar for this classic 21" CRT which supports up to 1600x1200 at 75 Hz whereas the optimum mode is 1400x1050 at 85 Hz.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Boot from the F10-Beta live CD.
Video mode is set to 1865x1392 pixels at 60 Hz
Video mode is set to 1600x1200 at 75 Hz or, preferably, 1400x1050 at 85 Hz.
In both cases, DPI are set to (117, 157) according to Xorg.0.log. However, the system font size under GNOME is huge, and in fact, it is using a significantly higher value of 137 whereas 96 appears a more reasonable choice and moreover the default value in previous releases.
For an X session launched after adding a minimum xorg.conf used successfully with F9, the resolution is set correctly to 1400x1050. However, when changing the DPI in the GNOME preferences panel from 137 to 96, the whole system starts over and boots from the CD once again.
Created attachment 319214 [details]
F10-Beta Screenshot of Screen Resolution applet
dimensions: 1280x800 pixels (289x21 millimeters)
resolution: 112x968 dots per inch
with ATI radeon express 200M and xorg-x11-drv-ati-6.9.0-38.fc10.x86_64
(II) RADEON(0): Max Image Size [cm]: horiz.: 33 vert.: 21
(II) RADEON(0): clock: 71.2 MHz Image Size: 289 x 21 mm
(II) RADEON(0): Setting screen physical size to 289 x 21
This bug appears to have been reported against 'rawhide' during the Fedora 10 development cycle.
Changing version to '10'.
More information and reason for this action is here:
There have been bunch of bug fixes
Could you retest with the latest kernel
( -132 at the time of this writing )
You can get the latest kernel build here
And with the latest xorg-x11-drv-ati.
( -60 at the time of this writing )
You can get the latest xorg-x11-drv-ati build here
And report back if it either improves or fixes this issue..
Created attachment 325500 [details]
Rawhide Xorg.0.log w/o xorg.conf
No improvement after upgrading to current "rawhide" including
I have retested the issue for current F10 w/updates including:
The X server now defaults to a resolution 1280x1024 at 75 Hz for my HP A4576A 21" CRT when no xorg.conf file is present which is a more sane configuration than the previous one.