I am using Gentoo and all xorg versions greater 6.7 i.e. 6.8.0 - 6.8.2 failing in detecting my lcd display. I have a ati firegl8700 card and a nec multisync lcd 2080ux+ display, native resolution 1600x1200, connected via DVI port. xorg.conf was generated by Xorg -configure. From the log it seems that the driver doesn't detect the dvi port at all. ..... (II) RADEON(0): Primary: Monitor -- NONE Connector -- VGA DAC Type -- Primary TMDS Type -- NONE DDC Type -- VGA_DDC (II) RADEON(0): Secondary: Monitor -- NONE Connector -- None DAC Type -- Unknown TMDS Type -- NONE DDC Type -- NONE ..... Setting MonitorLayout to "TMDS,CRT" or "CRT,TMDS" and specifying VertRefresh and HorizSync does not solve the problem. It seems that this bug is related to bug 1559, but I am not sure. xorg 6.7 works "out of the box".
Now, I have installed xorg-6.8.2 CVS. If I set MonitorLayout to "TMDS,CRT" (this is the only setting which detects the DVI connector) i get: .......... (II) RADEON(0): Primary: Monitor -- TMDS Connector -- DVI-D DAC Type -- TVDAC/ExtDAC TMDS Type -- NONE DDC Type -- NONE (II) RADEON(0): Secondary: Monitor -- CRT Connector -- VGA DAC Type -- Primary TMDS Type -- NONE DDC Type -- VGA_DDC .......... and xorg starts with a 640x480 screen. If I set PanelSize to 1600x1200 disable DDC and set VertRefresh and HorizSync accordingly I get a horrible looking screen with a lot of "noise", hard to describe.
Created attachment 2145 [details] xorg.log created with Xorg -verbose 5
Created attachment 2146 [details] xorg.conf
try adding some modes to the display sub-sections of your screen section. eg: Subsection "Display" Depth 16 Modes "1600x1200" "1024x768" "800x600" "640x480" EndSubsection Subsection "Display" Depth 24 Modes "1600x1200" "1024x768" "800x600" "640x480" EndSubsection
Thanks for the hint. This has solved the problem. I have added a few Modes, commented out PanelSize and got a much better looking screen but not perfect because the top of the displayed screen was in the middle of the monitor screen. I have then added a few modelines from an old xorg-6.7 log and now it works perfectly. I will add my working xorg.conf to this report, so other guys with the same problem can have a look into it.
Created attachment 2198 [details] working xorg.conf
Does it still work if you don't add the Modelines? (I.e., you add the Modes options in the "Screen" section but not the Modelines options in the "Monitor" section.)
*** This bug has been marked as a duplicate of 1559 ***
This is not a duplicate the problem was resolved.
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