Red Hat Bugzilla – Bug 155372
Apple Cinema Display not recognized / not in monitor list
Last modified: 2014-03-16 22:53:30 EDT
Description of problem:
My Apple Cinema Display 20" is not selectable from the list with
know LCD monitors. After selecting LCD Panel with the resolution of
1680x1050 I only get a resolution of 1440x1050 because there is no mode line for
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Run system-config-display
Able to select the Apple display out of the list with know monitors and
X being able to use the display at 1680x1050@60
Tested with Nvidia 6600GT (PCI-E) card using the default nv driver.
Manufacturer: APP Model: 921d
Modeline needed to get 1680x1050@60 working:
Modeline "1680x1050" 149.05 1680 1800 1968 2224 1050 1051 1054 1117 # 149.05
MHz, 67.02 kHz, 60.00 Hz
Created attachment 113370 [details]
Working xorg config with needed modeline
With FC4t3 the monitor is still not properly detected during install but
is now selectable through system-config-display. After selecting "Apple Cinema
Display 20 LCD" and the setting the resolution of 1680x1050. I get a nice
1680x1050 screen with the proper frequencies! Good stuff.
system-config-display provides 2 extra resolutions namely 1600x1200 and
1920x1200 which are not appropriate for this LCD.
The monitor database is in "hwdata" package, not s-c-d.
If it's in s-c-display, it's already in the monitor list.