I have Acer Aspire 5610 laptop (quite old I know). I'm running openSUSE 13.2. When I connect external monitor Acer V243H, which has native resolution 1920x1080 the picture gets blurry.
Doing some research I found about the xrandr utility. I tried:
:~> xrandr Screen 0: minimum 8 x 8, current 1280 x 800, maximum 32767 x 32767 LVDS1 connected 1280x800+0+0 (normal left inverted right x axis y axis) 331mm x 207mm 1280x800 60.00*+ 1024x768 60.00 800x600 60.32 56.25 640x480 59.94 TV1 disconnected (normal left inverted right x axis y axis) VGA1 connected (normal left inverted right x axis y axis) 1920x1080 60.00 + 1280x1024 60.02 1440x900 59.89 1280x800 59.81 1152x864 75.00 1024x768 70.07 60.00 800x600 60.32 56.25 640x480 66.67 60.00 720x400 70.08
Monitor does support native resolution. I manually added this:
xrandr --newmode "1920x1080_60.00" 172.80 1920 2040 2248 2576 1080 1081 1084 1118 - HSync +Vsync xrandr --addmode VGA1 1920x1080_60.00 xrandr --output VGA1 --mode 1920x1080_60.00
The picture just gets blurry (I can't see anything). I also tried with KDE 4 -> systemsettings -> Display And Monitor but no change. I also ran dmesg command which printed next error:
[drm:i9xx_set_fifo_underrun_reporting] *ERROR* pipe A underrun [drm:i915_irq_handler] *ERROR* pipe A underrun
Maybe this is the reason why outputing to external monitor does not work. Note: resolution lower than 1920x1080 works ok. If I run:
xrandr --output VGA1 --mode 1024x768
the picture shows on external monitor just fine.
Funny thing is that I tried installing Microsoft Windows XP and output to external monitor works ok (native resolution 1920x1080). So, hardware is ok. Anybody have any idea how to fix this? Am I missing something?