Is this a dual monitor reset bug?











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My two displays are:




  • Intel GMA x4500 Laptop (1280x800 native resolution of the built-in display)

  • External display (1920x1080)


A few minutes after I login to my dual monitor setup, it gets reset to mirror screens. If I restore the settings via the displays application, everything is fine.
On each reset, the following messages are written into /var/log/Xorg.0.log:



[    60.852] (II) PM Event received: Capability Changed
[ 60.852] I830PMEvent: Capability change
[ 132.920] (II) intel(0): EDID vendor "SEC", prod id 12869
[ 132.920] (II) intel(0): Printing DDC gathered Modelines:
[ 132.920] (II) intel(0): Modeline "1280x800"x0.0 68.94 1280 1296 1344 1408 800 801 804 816 -hsync -vsync (49.0 kHz)
[ 134.228] (II) intel(0): Allocated new frame buffer 1280x800 stride 5120, tiled


Whereas right on startup or manual resolution reset, /var/log/Xorg.0.log reports the expected frame buffer allocation:



[  1562.382] (II) intel(0): EDID vendor "SEC", prod id 12869
[ 1562.382] (II) intel(0): Printing DDC gathered Modelines:
[ 1562.382] (II) intel(0): Modeline "1280x800"x0.0 68.94 1280 1296 1344 1408 800 801 804 816 -hsync -vsync (49.0 kHz)
[ 1576.740] (II) intel(0): Allocated new frame buffer 3200x1080 stride 12800, tiled


Is Ubuntu 12.04 not compatible with my video card?



Can this be solved within Ubuntu?



I like its interface, but manually fiddling with resolution on every login is not bearable.










share|improve this question




























    up vote
    4
    down vote

    favorite












    My two displays are:




    • Intel GMA x4500 Laptop (1280x800 native resolution of the built-in display)

    • External display (1920x1080)


    A few minutes after I login to my dual monitor setup, it gets reset to mirror screens. If I restore the settings via the displays application, everything is fine.
    On each reset, the following messages are written into /var/log/Xorg.0.log:



    [    60.852] (II) PM Event received: Capability Changed
    [ 60.852] I830PMEvent: Capability change
    [ 132.920] (II) intel(0): EDID vendor "SEC", prod id 12869
    [ 132.920] (II) intel(0): Printing DDC gathered Modelines:
    [ 132.920] (II) intel(0): Modeline "1280x800"x0.0 68.94 1280 1296 1344 1408 800 801 804 816 -hsync -vsync (49.0 kHz)
    [ 134.228] (II) intel(0): Allocated new frame buffer 1280x800 stride 5120, tiled


    Whereas right on startup or manual resolution reset, /var/log/Xorg.0.log reports the expected frame buffer allocation:



    [  1562.382] (II) intel(0): EDID vendor "SEC", prod id 12869
    [ 1562.382] (II) intel(0): Printing DDC gathered Modelines:
    [ 1562.382] (II) intel(0): Modeline "1280x800"x0.0 68.94 1280 1296 1344 1408 800 801 804 816 -hsync -vsync (49.0 kHz)
    [ 1576.740] (II) intel(0): Allocated new frame buffer 3200x1080 stride 12800, tiled


    Is Ubuntu 12.04 not compatible with my video card?



    Can this be solved within Ubuntu?



    I like its interface, but manually fiddling with resolution on every login is not bearable.










    share|improve this question


























      up vote
      4
      down vote

      favorite









      up vote
      4
      down vote

      favorite











      My two displays are:




      • Intel GMA x4500 Laptop (1280x800 native resolution of the built-in display)

      • External display (1920x1080)


      A few minutes after I login to my dual monitor setup, it gets reset to mirror screens. If I restore the settings via the displays application, everything is fine.
      On each reset, the following messages are written into /var/log/Xorg.0.log:



      [    60.852] (II) PM Event received: Capability Changed
      [ 60.852] I830PMEvent: Capability change
      [ 132.920] (II) intel(0): EDID vendor "SEC", prod id 12869
      [ 132.920] (II) intel(0): Printing DDC gathered Modelines:
      [ 132.920] (II) intel(0): Modeline "1280x800"x0.0 68.94 1280 1296 1344 1408 800 801 804 816 -hsync -vsync (49.0 kHz)
      [ 134.228] (II) intel(0): Allocated new frame buffer 1280x800 stride 5120, tiled


      Whereas right on startup or manual resolution reset, /var/log/Xorg.0.log reports the expected frame buffer allocation:



      [  1562.382] (II) intel(0): EDID vendor "SEC", prod id 12869
      [ 1562.382] (II) intel(0): Printing DDC gathered Modelines:
      [ 1562.382] (II) intel(0): Modeline "1280x800"x0.0 68.94 1280 1296 1344 1408 800 801 804 816 -hsync -vsync (49.0 kHz)
      [ 1576.740] (II) intel(0): Allocated new frame buffer 3200x1080 stride 12800, tiled


      Is Ubuntu 12.04 not compatible with my video card?



      Can this be solved within Ubuntu?



      I like its interface, but manually fiddling with resolution on every login is not bearable.










      share|improve this question















      My two displays are:




      • Intel GMA x4500 Laptop (1280x800 native resolution of the built-in display)

      • External display (1920x1080)


      A few minutes after I login to my dual monitor setup, it gets reset to mirror screens. If I restore the settings via the displays application, everything is fine.
      On each reset, the following messages are written into /var/log/Xorg.0.log:



      [    60.852] (II) PM Event received: Capability Changed
      [ 60.852] I830PMEvent: Capability change
      [ 132.920] (II) intel(0): EDID vendor "SEC", prod id 12869
      [ 132.920] (II) intel(0): Printing DDC gathered Modelines:
      [ 132.920] (II) intel(0): Modeline "1280x800"x0.0 68.94 1280 1296 1344 1408 800 801 804 816 -hsync -vsync (49.0 kHz)
      [ 134.228] (II) intel(0): Allocated new frame buffer 1280x800 stride 5120, tiled


      Whereas right on startup or manual resolution reset, /var/log/Xorg.0.log reports the expected frame buffer allocation:



      [  1562.382] (II) intel(0): EDID vendor "SEC", prod id 12869
      [ 1562.382] (II) intel(0): Printing DDC gathered Modelines:
      [ 1562.382] (II) intel(0): Modeline "1280x800"x0.0 68.94 1280 1296 1344 1408 800 801 804 816 -hsync -vsync (49.0 kHz)
      [ 1576.740] (II) intel(0): Allocated new frame buffer 3200x1080 stride 12800, tiled


      Is Ubuntu 12.04 not compatible with my video card?



      Can this be solved within Ubuntu?



      I like its interface, but manually fiddling with resolution on every login is not bearable.







      multiple-monitors display






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Apr 14 '13 at 1:42









      Kevin Bowen

      14.1k145969




      14.1k145969










      asked Apr 27 '12 at 20:16









      Tentresh

      2112




      2112






















          2 Answers
          2






          active

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          up vote
          0
          down vote













          I experienced a similar problem with Intel GM45 drivers.
          Everything seemed to be fine after logging in, but as soon as I pressed the "super/windows key" or starting any application, the screen changed to "mirror" mode.
          Setting it in the system settings or using xrandr to my desired setup made everything fine.
          It seems that after log in, the capabilities of the graphics card/monitor change. I don't know exactly the cause, but it might have something to do with the "samsung tools" I use. Anyway, letting the script



          sleep 10
          xrandr --output LVDS1 --auto --primary
          xrandr --output VGA1 --auto --above LVDS1


          run on startup made everything fine






          share|improve this answer




























            up vote
            0
            down vote













            I am using intel xorg driver and can't get dual monitors (laptop + monitor) working. It worked fine in 11.10.



            You could try deleting ~/.config/monitors.xml which didn't work for me although it did get my displays to mirror.



            But maybe something went wrong in the upgrade. It may be worth backing up everything and doing a clean install of 12.04?






            share|improve this answer























            • This was a clean install. I've noticed that this "PM capability change" also happens with just one monitor causing short flickering. But again, after flickering everything is fine. These two lines seem to indicate the cause (intel video driver): [ 60.852] (II) PM Event received: Capability Changed [ 60.852] I830PMEvent: Capability change
              – Tentresh
              May 2 '12 at 12:52













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            2 Answers
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            up vote
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            down vote













            I experienced a similar problem with Intel GM45 drivers.
            Everything seemed to be fine after logging in, but as soon as I pressed the "super/windows key" or starting any application, the screen changed to "mirror" mode.
            Setting it in the system settings or using xrandr to my desired setup made everything fine.
            It seems that after log in, the capabilities of the graphics card/monitor change. I don't know exactly the cause, but it might have something to do with the "samsung tools" I use. Anyway, letting the script



            sleep 10
            xrandr --output LVDS1 --auto --primary
            xrandr --output VGA1 --auto --above LVDS1


            run on startup made everything fine






            share|improve this answer

























              up vote
              0
              down vote













              I experienced a similar problem with Intel GM45 drivers.
              Everything seemed to be fine after logging in, but as soon as I pressed the "super/windows key" or starting any application, the screen changed to "mirror" mode.
              Setting it in the system settings or using xrandr to my desired setup made everything fine.
              It seems that after log in, the capabilities of the graphics card/monitor change. I don't know exactly the cause, but it might have something to do with the "samsung tools" I use. Anyway, letting the script



              sleep 10
              xrandr --output LVDS1 --auto --primary
              xrandr --output VGA1 --auto --above LVDS1


              run on startup made everything fine






              share|improve this answer























                up vote
                0
                down vote










                up vote
                0
                down vote









                I experienced a similar problem with Intel GM45 drivers.
                Everything seemed to be fine after logging in, but as soon as I pressed the "super/windows key" or starting any application, the screen changed to "mirror" mode.
                Setting it in the system settings or using xrandr to my desired setup made everything fine.
                It seems that after log in, the capabilities of the graphics card/monitor change. I don't know exactly the cause, but it might have something to do with the "samsung tools" I use. Anyway, letting the script



                sleep 10
                xrandr --output LVDS1 --auto --primary
                xrandr --output VGA1 --auto --above LVDS1


                run on startup made everything fine






                share|improve this answer












                I experienced a similar problem with Intel GM45 drivers.
                Everything seemed to be fine after logging in, but as soon as I pressed the "super/windows key" or starting any application, the screen changed to "mirror" mode.
                Setting it in the system settings or using xrandr to my desired setup made everything fine.
                It seems that after log in, the capabilities of the graphics card/monitor change. I don't know exactly the cause, but it might have something to do with the "samsung tools" I use. Anyway, letting the script



                sleep 10
                xrandr --output LVDS1 --auto --primary
                xrandr --output VGA1 --auto --above LVDS1


                run on startup made everything fine







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered May 6 '12 at 12:57









                mdm

                1




                1
























                    up vote
                    0
                    down vote













                    I am using intel xorg driver and can't get dual monitors (laptop + monitor) working. It worked fine in 11.10.



                    You could try deleting ~/.config/monitors.xml which didn't work for me although it did get my displays to mirror.



                    But maybe something went wrong in the upgrade. It may be worth backing up everything and doing a clean install of 12.04?






                    share|improve this answer























                    • This was a clean install. I've noticed that this "PM capability change" also happens with just one monitor causing short flickering. But again, after flickering everything is fine. These two lines seem to indicate the cause (intel video driver): [ 60.852] (II) PM Event received: Capability Changed [ 60.852] I830PMEvent: Capability change
                      – Tentresh
                      May 2 '12 at 12:52

















                    up vote
                    0
                    down vote













                    I am using intel xorg driver and can't get dual monitors (laptop + monitor) working. It worked fine in 11.10.



                    You could try deleting ~/.config/monitors.xml which didn't work for me although it did get my displays to mirror.



                    But maybe something went wrong in the upgrade. It may be worth backing up everything and doing a clean install of 12.04?






                    share|improve this answer























                    • This was a clean install. I've noticed that this "PM capability change" also happens with just one monitor causing short flickering. But again, after flickering everything is fine. These two lines seem to indicate the cause (intel video driver): [ 60.852] (II) PM Event received: Capability Changed [ 60.852] I830PMEvent: Capability change
                      – Tentresh
                      May 2 '12 at 12:52















                    up vote
                    0
                    down vote










                    up vote
                    0
                    down vote









                    I am using intel xorg driver and can't get dual monitors (laptop + monitor) working. It worked fine in 11.10.



                    You could try deleting ~/.config/monitors.xml which didn't work for me although it did get my displays to mirror.



                    But maybe something went wrong in the upgrade. It may be worth backing up everything and doing a clean install of 12.04?






                    share|improve this answer














                    I am using intel xorg driver and can't get dual monitors (laptop + monitor) working. It worked fine in 11.10.



                    You could try deleting ~/.config/monitors.xml which didn't work for me although it did get my displays to mirror.



                    But maybe something went wrong in the upgrade. It may be worth backing up everything and doing a clean install of 12.04?







                    share|improve this answer














                    share|improve this answer



                    share|improve this answer








                    edited Apr 14 '13 at 1:44









                    Kevin Bowen

                    14.1k145969




                    14.1k145969










                    answered May 2 '12 at 12:30









                    user33302

                    213




                    213












                    • This was a clean install. I've noticed that this "PM capability change" also happens with just one monitor causing short flickering. But again, after flickering everything is fine. These two lines seem to indicate the cause (intel video driver): [ 60.852] (II) PM Event received: Capability Changed [ 60.852] I830PMEvent: Capability change
                      – Tentresh
                      May 2 '12 at 12:52




















                    • This was a clean install. I've noticed that this "PM capability change" also happens with just one monitor causing short flickering. But again, after flickering everything is fine. These two lines seem to indicate the cause (intel video driver): [ 60.852] (II) PM Event received: Capability Changed [ 60.852] I830PMEvent: Capability change
                      – Tentresh
                      May 2 '12 at 12:52


















                    This was a clean install. I've noticed that this "PM capability change" also happens with just one monitor causing short flickering. But again, after flickering everything is fine. These two lines seem to indicate the cause (intel video driver): [ 60.852] (II) PM Event received: Capability Changed [ 60.852] I830PMEvent: Capability change
                    – Tentresh
                    May 2 '12 at 12:52






                    This was a clean install. I've noticed that this "PM capability change" also happens with just one monitor causing short flickering. But again, after flickering everything is fine. These two lines seem to indicate the cause (intel video driver): [ 60.852] (II) PM Event received: Capability Changed [ 60.852] I830PMEvent: Capability change
                    – Tentresh
                    May 2 '12 at 12:52




















                     

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