Description of problem: Apple Cinema Display 20 inch not detected (unknown) during install Version-Release number of selected component (if applicable): How reproducible: Allways Steps to Reproduce: 1. Install FC4t3 (tested with x86_64) 2. 3. Actual results: Display is detected as "unknown" Expected results: Display is detected as "Apple Cinema Display 20" Additional info: Related to bug 155372 (system-config-display) now partially resolved with t3.
What happens if you run 'ddcprobe' on the installed system?
Running ddcprobe gives: [root@paragon ~]# ddcprobe Monitor DDC probe results Monitor DDC Probe failed. [root@paragon ~]# From Xorg.0.log however: (II) NV(0): I2C bus "DDC" initialized. (II) NV(0): Probing for analog device on output A... (--) NV(0): ...can't find one (II) NV(0): Probing for analog device on output B... (--) NV(0): ...found one (II) NV(0): Probing for EDID on I2C bus A... (II) NV(0): I2C device "DDC:ddc2" registered at address 0xA0. (II) NV(0): I2C device "DDC:ddc2" removed. (--) NV(0): DDC detected a DFP: (II) NV(0): Manufacturer: APP Model: 921d Serial#: 5020104 (II) NV(0): Year: 2004 Week: 46 (II) NV(0): EDID Version: 1.3 (II) NV(0): Digital Display Input (II) NV(0): Max H-Image Size [cm]: horiz.: 43 vert.: 27 (II) NV(0): Gamma: 2.20 (II) NV(0): DPMS capabilities: Off; RGB/Color Display (II) NV(0): Default color space is primary color space (II) NV(0): First detailed timing is preferred mode (II) NV(0): redX: 0.640 redY: 0.340 greenX: 0.295 greenY: 0.610 (II) NV(0): blueX: 0.145 blueY: 0.070 whiteX: 0.312 whiteY: 0.329 (II) NV(0): Manufacturer's mask: 0 (II) NV(0): Supported Future Video Modes: (II) NV(0): #0: hsize: 1680 vsize 1050 refresh: 60 vid: 179 (II) NV(0): Supported additional Video Mode: (II) NV(0): clock: 119.0 MHz Image Size: 433 x 270 mm (II) NV(0): h_active: 1680 h_sync: 1728 h_sync_end 1760 h_blank_end 1840 h_border: 0 (II) NV(0): v_active: 1050 v_sync: 1053 v_sync_end 1059 v_blanking: 1080 v_border: 0 (II) NV(0): Monitor name: Cinema Displa (II) NV(0): Monitor name: y (II) NV(0): Number of EDID sections to follow: 1 (II) NV(0): Probing for EDID on I2C bus B... This is with a PCI Express 6600GT
Unfortunately, this means that the monitor isn't probe-able via the generic probing mechanisms and can only be probed via card-specific i2c routines that X doesn't export :(