Hi again, After disabling desktop effects, and waiting for a while (?) the X-server restarted and now I can use the external monitor and internal in mirror mode (I have external at 1600x1200, internal at 1024x768). Other configurations (xrandr --output VGA1 --above LVDS1...) do not change anything.
All the time I have the following output on dmesg: [ 8784.334136] i915 0000:00:02.0: LVDS-1: EDID invalid. [ 8784.744512] [drm:edid_is_valid] *ERROR* Raw EDID: [ 8784.744517] <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 8784.744520] <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 8784.744522] <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 8784.744524] <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 8784.744543] <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 8784.744545] <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 8784.744547] <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 8784.744549] <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 8784.744551] xrandr gives: Screen 0: minimum 320 x 200, current 1600 x 1200, maximum 4096 x 4096 VGA1 connected 1600x1200+0+0 (normal left inverted right x axis y axis) 360mm x 270mm 1600x1200 75.0*+ 1280x1024 75.0 1152x864 75.0 1024x768 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 640x480 72.8 75.0 60.0 720x400 70.1 LVDS1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0*+ 85.0 75.0 70.1 60.0 832x624 74.6 800x600 85.1 72.2 75.0 60.3 56.2 640x480 85.0 72.8 75.0 59.9 720x400 85.0 640x400 85.1 640x350 85.1 DVI1 disconnected (normal left inverted right x axis y axis) Juan -- intel graphics laptop crashes with external monitor https://bugs.launchpad.net/bugs/465318 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs