Comment 39 for bug 1040053

ok, you are right. there is a new bios version.

$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
A11
05/29/2012

After upgrade:
$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
A12
09/07/2012

I updated and booted the live image, it is the same as before.

The screen is recognized after the second hdmi cable plugin try.

using
xrandr --auto

activates VGA-1, after I saw this http://www0.xup.in/exec/ximg.php?fid=13581600

I deactivated VGA-1 with "xrandr --output VGA-1 --off", the most artefacts are gone.
But it is still slow on dual screen and I can not change to the notebook screen (is is frozen) or the screen is cloned.

xrandr
Screen 0: minimum 320 x 200, current 4310 x 1080, maximum 32767 x 32767
LVDS1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
   1366x768 60.1*+
   1360x768 59.8 60.0
   1024x768 60.0
   800x600 60.3 56.2
   640x480 59.9
VGA2 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
VGA-1 connected 1024x768+1366+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1024x768 60.0*
   800x600 60.3 56.2
   848x480 60.0
   640x480 59.9
HDMI-1 connected 1920x1080+2390+0 (normal left inverted right x axis y axis) 477mm x 269mm
   1920x1080 59.9*+ 60.0
   1680x1050 59.9
   1280x1024 75.0 60.0
   1280x960 75.0
   1152x864 75.0
   1280x720 75.0
   1024x768 75.1 60.0
   800x600 75.0 60.3
   640x480 75.0 60.0
   720x400 70.1
  1024x768 (0x44) 65.0MHz
        h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.4KHz
        v: height 768 start 771 end 777 total 806 clock 60.0Hz
  800x600 (0x45) 40.0MHz
        h: width 800 start 840 end 968 total 1056 skew 0 clock 37.9KHz
        v: height 600 start 601 end 605 total 628 clock 60.3Hz
  800x600 (0x46) 36.0MHz
        h: width 800 start 824 end 896 total 1024 skew 0 clock 35.2KHz
        v: height 600 start 601 end 603 total 625 clock 56.2Hz