Thread: Trouble making screen resolution change persistent

hello all,

brand new ubuntu , far has been exciting frustrating learning experience. happen have intel integrated graphics , apparently ubuntu not super friendly intel integrated graphics.

have been able change screen resolution native screen resolution using following xrandr commands:

code:

xrandr --newmode "1280x768_60.00"   79.50  1280 1344 1472 1664  768 771 781 798 -hsync +vsync  xrandr --addmode vga1 1280x768_60.00  xrandr --output vga1 --mode 1280x768_60.00

in order make these changes persistent have copied them /etc/gdb/gdbinit file. restarted computer, , received bunch of error messages saying os not make screen resolution work. copy , pasted commands 1 @ time terminal make sure code had left in gdbinit file good. copied first line

code:

xrandr --newmode "1280x768_60.00"   79.50  1280 1344 1472 1664  768 771 781 798 -hsync +vsync

and executed fine. entered next line in

code:

xrandr --addmode vga1 1280x768_60.00

and not did execute, upon entering screen automatically re-sized correct resolution. strange me because os new supposed in resolution mode ¨280x768_60.00¨, mode did not add correctly gdbinit file. cannot figure out why work when entered terminal did not work when executed gdbinit file.

has wrestled problem? appreciated.

--evan

intel integrated graphics work fine ubuntu. modeline settings used in "/etc/x11/xorg.conf" file. have such file? need ensure have correct driver installed graphics chip.

sample file monitor section:/etc/x11/xorg.conf

code:

section "monitor" identifier "vga" # 1024x768 @ 60.00 hz (gtf) hsync: 47.70 khz; pclk: 64.11 mhz modeline "1024x768_60.00" 64.11 1024 1080 1184 1344 768 769 772 795 -hsync +vsync # 1280x768 @ 60.00 hz (gtf) hsync: 47.70 khz; pclk: 80.14 mhz modeline "1280x768_60.00" 80.14 1280 1344 1480 1680 768 769 772 795 -hsync +vsync # 1280x1024 @ 60.00 hz (gtf) hsync: 63.60 khz; pclk: 108.88 mhz modeline "1280x1024_60.00" 108.88 1280 1360 1496 1712 1024 1025 1028 1060 -hsync +vsync # 1440x900 @ 60.00 hz (gtf) hsync: 55.92 khz; pclk: 106.47 mhz modeline "1440x900_60.00" 106.47 1440 1520 1672 1904 900 901 904 932 -hsync +vsync option "preferredmode" "1024x768_60.00" endsection section "monitor" identifier "lvds" modeline "1280x768_60.00" 80.14 1280 1344 1480 1680 768 769 772 795 -hsync +vsync modeline "1024x600_60.00" 48.96 1024 1064 1168 1312 600 601 604 622 -hsync +vsync option "preferredmode" "1280x768_60.00" endsection section "device" identifier "intel 945 gm" driver "intel" option "accelmethod" "xaa" endsection section "screen" identifier "primary screen" device "intel 945 gm" defaultdepth 24 subsection "display" depth 24 modes "1440x900" "1280x768" "1280x1024" "1024x768" "640x480" virtual 1440 1792 endsubsection endsection section "serverlayout" identifier "default layout" screen "primary screen" endsection

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