[Openchrome-users] Problem getting Xorg to run on Fedora Core 12

[John Robinson]

On 13/03/2010 14:57, George R. Kasica wrote:
>> Sorry, my bad. Make it :
>> HorizSync 30 - 83
>> VertRefresh 56 - 76
>>
> No luck...still a blank black screen...log and config below:
[...]
> (II) CHROME(0): Not using mode "1920x1080" (no mode of this name)
[...]
> (--) CHROME(0): Virtual size is 1600x1200 (pitch 1600)
> (**) CHROME(0):  Default mode "1600x1200": 162.0 MHz (scaled from 0.0
> MHz), 75.0 kHz, 60.0 Hz
> (II) CHROME(0): Modeline "1600x1200"x60.0  162.00  1600 1664 1856 2160
> 1200 1201 1204 1250 +hsync +vsync (75.0 kHz)

Oh dear. You don't have a 1920x1080 mode so the driver's trying 
1600x1200 which your monitor may not support. Try adding the following 
below the VertRefresh line:

    # 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz
    Modeline "1920x1080"  173.00  1920 2048 2248 2576  1080 1083
1088 1120 -hsync +vsync

Or if your monitor supports reduced blanking:
    # 1920x1080 59.93 Hz (CVT 2.07M9-R) hsync: 66.59 kHz; pclk: 138.50 MHz
    Modeline "1920x1080"  138.50  1920 1968 2000 2080  1080 1083 1088
1111 +hsync -vsync

Of course, this is still a workaround until we find out why the driver's 
not correctly detecting your monitor and getting a suitable modeline 
directly from it.

Cheers,

John.