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Text corruption in XFCE after configuring a third monitor

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  • Text corruption in XFCE after configuring a third monitor

    Hi. I'm a new member of the forum. I have been visiting Phoronix for a long time but this is my first post. Sadly, I have a problem with my graphic environment in XFCE and this is why I finally created a account in Phoronix, maybe you can help me.

    I have two Radeon HD7970 installed in my PC. The PC has installed Debian Jessie with XFCE as graphical enviroment.

    The PC had two monitors connected to the first Radeon card and it was working fine.

    Today I attached a old flat monitor in the second Radeon card. After some configuration in xorg.conf I can use the third monitor as second screen (xorg screen). The problem is the text have some corruption and make impossible to understand. The graphics are fine only the text is affected. Text in terminal and xterm are fine.

    This are some pictures of the problem:



    This is the xorg.conf:

    Code:
    Section "ServerLayout"
    	Identifier     "aticonfig Layout"
    	Screen      0  "aticonfig-Screen[0]-0"  RightOf "screen2"
    	Screen	    1  "screen2"
    EndSection
    
    Section "Module"
    EndSection
    
    Section "Monitor"
    	Identifier   "aticonfig-Monitor[0]-0"
    	Option	    "VendorName" "ATI Proprietary Driver"
    	Option	    "ModelName" "Generic Autodetecting Monitor"
    	Option	    "DPMS" "true"
    EndSection
    
    Section "Device"
    	Identifier  "aticonfig-Device[0]-0"
    	Driver      "radeon
    	BusID       "PCI:1:0:0"
    EndSection
    
    Section "Screen"
            Identifier "screen2"
            Device     "amdSecondCard"
            Monitor    "DVI-1-1"
            DefaultDepth     24
            SubSection "Display
                    Viewport   0 0
                    Depth     24
            EndSubSection
    EndSection
    
    Section "Screen"
    	Identifier "aticonfig-Screen[0]-0"
    	Device     "aticonfig-Device[0]-0"
    	Monitor    "aticonfig-Monitor[0]-0"
    	DefaultDepth     24
    	SubSection "Display"
    		Viewport   0 0
    		Depth     24
    	EndSubSection
    EndSection
    
    Section "Device"
    	Identifier "amdSecondCard"
    	Driver "radeon"
    	BusID  "PCI:6:0:0"
    EndSection
    
    Section "Monitor"
            Identifier  "DVI-1-1"
            Option      "DPMS" "true"
    EndSection
    This is the log for xorg:

    http://seldiame.net/stuff/other/log.txt
    Can you help me? It's a problem from the driver? a problem with xfce? a bad config in xorg.con? maybe some incorrect settings in charset? I don't know but for me seems some kind of memory corruption originated by the driver but I only guessing.

    Sorry for the bad English, I'm a Spanish speaker.

    Thank you for your time.

  • #2
    new info

    In the meantime I installed Gnome to see if it's a problem unique in XFCE. When I started Gnome the third monitor is on but black, I can control his cursor but no windows. The other monitors show Gnome well, but after some manipulation I noted again the text corruption but a lot less than with XFCE.

    Someone can help me?

    Comment


    • #3
      End

      Hi.

      If someone is interested I found the solution of this.

      The problem is a bug in xserver branch 1.16. The problem is solved in branch 1.16.99 (RC 1.17).

      With the support of the xorg team I have backported some commits from 1.16.99 to the 1.16 branch that correct this. Now I'm waiting to integrate this changes in the official git repository to made available this fix to the 1.16 branch of xserver. In the meantime I have my third monitor working

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