Thread: ASUS 1201HA (gma500) external monitor resolution problem

hello,
after enduring slide-show desktop experience win7 on netbook way long have decided try ubuntu slimmer , faster alternative. initial experiment 12.10 , gma500_gfx kernel module had rather discouraging results (never ending screen flickering, weird artefacts around cursor , image on external screen shaking horizontally point of being unreadable of time). have downgraded ubuntu 11.04 , emgd driver ppa:gma500/emgd , blown away how snappier computer has become. video playback , flash video both fluent , more importantly don't freeze whole system long time did on 12.10.

netbook quiet, cool , super fast. problem connecting external screen need work degree of efficiency. connecting screen vga output on computer had no effect. solution able find using configuration file , placing in /usr/share/x11/xorg.conf.d/:

code:

section "module"     load "dbe"     load "dri"     load "dri2"     load "record"     load "extmod"     load "glx" endsection  section "monitor"     identifier   "mainmonitor"     modelname    "lcd panel 1366x768" endsection  section "screen"     identifier    "mainscreen"     device        "maindevice"     monitor       "mainmonitor"     subsection "display"     depth     24     modes    "1366x768"     endsubsection endsection  section "device"     identifier "maindevice"     driver     "emgd" #    driver "vesa"     vendorname "intel(r) deg"     boardname  "embedded graphics"     busid      "0:2:0"     screen      0     videoram    32768     option     "pcfversion"             "1792"     option     "configid"               "1"     option     "all/1/name"             "lvds-display"     option     "all/1/general/portorder"        "24000"     option     "all/1/general/videoram"                 "32768"     option     "all/1/general/displayconfig"        "2"     option     "all/1/general/displaydetect"        "1"     option     "all/1/general/accel"            "1"     option     "all/1/general/dri"          "1"     option     "all/1/general/dri2"         "1"     option     "all/1/general/xvideo"           "1"     option     "all/1/general/xvideoblend"      "0"     option     "all/1/general/tearfb"           "0"     option     "all/1/general/shadowfb"         "0"     option     "all/1/general/swcursor"         "0"     option     "all/1/port/4/general/name"      "lvds" #    option     "all/1/port/4/general/rotation"     "0"     option     "all/1/port/4/general/edid"      "1" #    option     "all/1/port/4/attr/70"          "100" #    option     "all/1/port/4/attr/71"                   "20300"     option     "all/1/port/4/attr/72"           "0" #    option     "all/1/port/4/fpinfo/bkltmethod"         "1" #    option     "all/1/port/4/fpinfo/bkltenable"         "1"     option      "all/1/port/2/general/name"     "svdo"     option  "all/1/port/2/general/edid"     "1"     option  "all/1/port/2/general/edidavail"    "1"     option  "all/1/port/2/general/edidnotavail"     "7" endsection  # secondary (for dual-head only) display section "monitor"     identifier   "vgamonitor"     modelname    "vga output" endsection  section "screen"     identifier    "vgascreen"     device        "vgadevice"     monitor       "vgamonitor"     subsection    "display"     depth   24     modes   "1440x900"     endsubsection endsection  section "device"     identifier "vgadevice"     driver     "emgd"     vendorname "intel(r) deg"     boardname  "embedded graphics"     busid      "0:2:0"     screen     1 endsection  section "serverlayout"     identifier     "dual head layout"     screen  "mainscreen"     screen  "vgascreen" rightof "mainscreen" endsection  section "dri"         mode         0666 endsection  section "serverflags" #   option "autoadddevices" "false" endsection

the resulting resolution , aspect ratio on external screen incorrect, however. have tried changing modes "1600x900" line read: modes "1920x1200" had no effect. proper resolution not available in monitors configuration applet. instead cloned output both screens resolution toggling between 1366x768 , 1920x1080 on both screens use of fn+f8. commenting out internal screen serverlayout section causes system not boot, although point when freezes (at checking battery ... ok) external screen used properly.

under windows can use fn+f8 toggle between built in display, clone mode , extended desktop. can further disable internal screen , use vga port output using configuration software came intel driver. on ubuntu understand corresponding utility emgdui can't find documentation explaining how should used. running no arguments gives following output:

code:

lib version: 1.0.0  os name: os name: linux, release: 2.6.38-16-generic version: version: #67-ubuntu smp thu sep 6 18:00:43 utc 2012 distribution: distribution: ubuntu 11.04 \n \l additional info: x server version: 1.9.0.0   driver name: intel embedded media , graphics driver driver version: 161952 driver build date: apr 26 2011 chipset name: intel gma500 config id used: 42112  total dcs available: 4 dc list:  [1] 0x21 [2] 0x400022 [3] 0x400028 [4] 0x41  current dc: 0x400022  width    height    refresh rate  640    480    60 640    480    70 640    480    72 640    480    75 640    480    85 640    480    100 640    480    120 720    480    60 720    576    50 800    480    60 800    600    60 800    600    70 800    600    72 800    600    75 800    600    85 800    600    100 800    600    120 960    540    60 1024    768    60 1024    768    70 1024    768    75 1024    768    85 1024    768    100 1024    768    120 1152    864    60 1152    864    70 1152    864    72 1152    864    75 1152    864    85 1152    864    100 1280    720    60 1280    720    75 1280    720    85 1280    720    100 1280    768    60 1280    768    75 1280    768    85 1280    960    60 1280    960    75 1280    960    85 1280    1024    60 1280    1024    70 1280    1024    72 1280    1024    75 1280    1024    85 1366    768    60 1400    1050    60 1400    1050    75 1600    900    60 1600    900    75 1600    1200    60 1920    1080    50  width    height    refresh rate  1366    768    60 640    480    60 720    480    60 720    576    50 800    480    60 800    600    60 960    540    60 1024    768    60 1280    720    60 1280    768    60  setting 16 bits per pixel set primary mode to: 640 x 480 x 60  setting 32 bits per pixel set primary mode to: 640 x 480 x 60  port on primary display location 0 2 port 2 not flipped port 2 rotated 0 degrees

the detected modes not correct monitor , low 16:10 resolutions listed. in cloned mode using 1920x1080 performance still brilliant , nothing better continue using linux/emgd setup everyday work. not technical person , don't have linux experience guidance getting correct resolution , output on external screen appreciated. fonts blurry , hard read forced either use miniature netbook screen or windows 7 external monitor. if there way disable internal screen , use vga port more pleased minor issue comparison.

the problem is, both 11.04 , emgd unsupported. gma500 5years old, , more ever, seems dead end no support , no interest anyone.

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Hardware [ubuntu] ASUS 1201HA (gma500) external monitor resolution problem

Ubuntu