[SOLVED] Dual monitor behavior when I only have one monitor

[furches]

I'm new to Mageia and love it so far. I've searched the forums and haven't found a related post, so here goes....

I have a new Samsung Series 7. My mouse pointer will move off the right side of the screen, and sometimes when I open windows they 'appear' off the right of the screen. It is as if I have dual monitors when I actually don't. When I go to System Settings and "Monitors", then "Dual Monitors", two displays are shown and there is no way to delete Display 2. I don't see any way to delete or remove this non-existent second monitor.

Any help is appreciated.

Thanks,
Steve

[doktor5000]

Please show your /etc/X11/xorg.conf, but please put the contents in a Code-block.

[furches]

Here you go:

Code: Select all

# File generated by XFdrake (rev 262502)

# **********************************************************************
# Refer to the xorg.conf man page for details about the format of
# this file.
# **********************************************************************

Section "ServerFlags"
    Option "DontZap" "False" # disable <Ctrl><Alt><BS> (server abort)
    AllowMouseOpenFail # allows the server to start up even if the mouse does not work
    #DontZoom # disable <Ctrl><Alt><KP_+>/<KP_-> (resolution switching)
EndSection

Section "Module"
    Load "v4l" # Video for Linux
EndSection

Section "Monitor"
    Identifier "monitor1"
    VendorName "Plug'n Play"
   
    # TV fullscreen mode or DVD fullscreen output.
    # 768x576 @ 79 Hz, 50 kHz hsync
    ModeLine "768x576"     50.00  768  832  846 1000   576  590  595  630
   
    # 768x576 @ 100 Hz, 61.6 kHz hsync
    ModeLine "768x576"     63.07  768  800  960 1024   576  578  590  616
EndSection

Section "Monitor"
    Identifier "monitor2"
    VendorName "Plug'n Play"
   
    # TV fullscreen mode or DVD fullscreen output.
    # 768x576 @ 79 Hz, 50 kHz hsync
    ModeLine "768x576"     50.00  768  832  846 1000   576  590  595  630
   
    # 768x576 @ 100 Hz, 61.6 kHz hsync
    ModeLine "768x576"     63.07  768  800  960 1024   576  578  590  616
EndSection

Section "Device"
    Identifier "device1"
    VendorName "Intel Corporation"
    BoardName "Intel 810 and later"
    Driver "intel"
    Screen 0
    BusID "PCI:0:2:0"
    Option "DPMS"
EndSection

Section "Device"
    Identifier "device2"
    VendorName "ATI Technologies Inc"
    BoardName "ATI Radeon HD 2000 and later (radeon/fglrx)"
    Driver "ati"
    Screen 0
    BusID "PCI:1:0:0"
    Option "DPMS"
EndSection

Section "Screen"
    Identifier "screen1"
    Device "device1"
    Monitor "monitor1"
EndSection

Section "Screen"
    Identifier "screen2"
    Device "device2"
    Monitor "monitor2"
EndSection

Section "ServerLayout"
    Identifier "layout1"
    Screen "screen1"
    Screen "screen2" RightOf "screen1"
    Option "Xinerama"
EndSection


[doktor5000]

Code: Select all


Section "Screen"
    Identifier "screen1"
    Device "device1"
    Monitor "monitor1"
EndSection

Section "Screen"
    Identifier "screen2"
    Device "device2"
    Monitor "monitor2"
EndSection

Section "ServerLayout"
    Identifier "layout1"
    Screen "screen1"
    Screen "screen2" RightOf "screen1"
    Option "Xinerama"
EndSection


Would be interesting why drakx11 created up a dual-screen xinerama setup for you.
Your best bet is to boot into failsafe mode, delete /etc/X11/xorg.conf and redo the setup via drakx11.
Maybe you changed some options there? Normally you wouldn't get that setup with default settings ...

[sglafata]

Do you have two video cards installed? It looks like you have an Intel video card and an ATI video card...possibly an on-board video card and an expansion card? If that is true, then which are you using? You could potentially comment out the one that is not being used and restart.

Like this (if you are using the ATI card):

Code: Select all

# File generated by XFdrake (rev 262502)

# **********************************************************************
# Refer to the xorg.conf man page for details about the format of
# this file.
# **********************************************************************

Section "ServerFlags"
    Option "DontZap" "False" # disable <Ctrl><Alt><BS> (server abort)
    AllowMouseOpenFail # allows the server to start up even if the mouse does not work
    #DontZoom # disable <Ctrl><Alt><KP_+>/<KP_-> (resolution switching)
EndSection

Section "Module"
    Load "v4l" # Video for Linux
EndSection

#Section "Monitor"
#    Identifier "monitor1"
#    VendorName "Plug'n Play"
   
    # TV fullscreen mode or DVD fullscreen output.
    # 768x576 @ 79 Hz, 50 kHz hsync
#    ModeLine "768x576"     50.00  768  832  846 1000   576  590  595  630
   
    # 768x576 @ 100 Hz, 61.6 kHz hsync
#    ModeLine "768x576"     63.07  768  800  960 1024   576  578  590  616
#EndSection

Section "Monitor"
    Identifier "monitor2"
    VendorName "Plug'n Play"
   
    # TV fullscreen mode or DVD fullscreen output.
    # 768x576 @ 79 Hz, 50 kHz hsync
    ModeLine "768x576"     50.00  768  832  846 1000   576  590  595  630
   
    # 768x576 @ 100 Hz, 61.6 kHz hsync
    ModeLine "768x576"     63.07  768  800  960 1024   576  578  590  616
EndSection

#Section "Device"
#    Identifier "device1"
#    VendorName "Intel Corporation"
#    BoardName "Intel 810 and later"
#    Driver "intel"
#    Screen 0
#    BusID "PCI:0:2:0"
#    Option "DPMS"
#EndSection

Section "Device"
    Identifier "device2"
    VendorName "ATI Technologies Inc"
    BoardName "ATI Radeon HD 2000 and later (radeon/fglrx)"
    Driver "ati"
    Screen 0
    BusID "PCI:1:0:0"
    Option "DPMS"
EndSection

#Section "Screen"
#    Identifier "screen1"
#    Device "device1"
#    Monitor "monitor1"
#EndSection

Section "Screen"
    Identifier "screen2"
    Device "device2"
    Monitor "monitor2"
EndSection

Section "ServerLayout"
    Identifier "layout1"
#    Screen "screen1"
    Screen "screen2" # RightOf "screen1"
    Option "Xinerama"
EndSection

[furches]

Would be interesting why drakx11 created up a dual-screen xinerama setup for you.
Your best bet is to boot into failsafe mode, delete /etc/X11/xorg.conf and redo the setup via drakx11.
Maybe you changed some options there? Normally you wouldn't get that setup with default settings ...

When I boot in safe mode, it takes me to a prompt. Can you tell me how to delete xorg.conf and run drakx11 from there?

Steve

[alf]

When I boot in safe mode, it takes me to a prompt. Can you tell me how to delete xorg.conf and run drakx11 from there?

log in as user root and delete file with

Code: Select all

rm -f /etc/X11/xorg.conf

afterwards run

Code: Select all

XFdrake

also as root.

[doktor5000]

afterwards run

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XFdrake

also as root.

drakx11 is maybe easier to remember and one does not have to pay attention to case sensitivity

[furches]

I keep getting the error "Screen 1 deleted because of no matching config selection. CMM_COMMAND_LOCK_SURFACE failed: [1]!"

Thanks for your patience

Steve

[furches]

Again, sorry for my ignorance on this...

Which X server should I choose? Also, should I choose "Configure all heads independently", "Use Xinerama extension", "Configure only Intel Corporation|Sandy Bridge Integrated Graphics...." or "Configure only ATI Tech.....AMD RADEON HD 6470M"?

[alf]

I'd only configure the ATI card.

@Doktor5000 I've been using XFdrake for years, so I forgot that there is also drakx11

[furches]

@alf, Doktor5000, sglafata..

Choosing the ATI card did the trick. Many thanks to all of you for your time and expertise. Everything seems to be working well now!

Steve

[EDIT] I misspoke. It was actually configuring only the Intel card that worked. I guess this is fine, as I am not terribly concerned with 3D graphics.

Thanks again.

[martinw]

Note that the ATI card will consume more power, so if you are more keen on battery life than 3D graphics performance, switch to the Intel card.