xorg - How can I choose AMD graphics card as default for Ubuntu 16.04? - Ask Ubuntu


context

i have spend time solving , stuck. when inspect output of lspci, find have 2 possible vga controlers:

00:02.0 vga compatible controller: intel corporation 2nd generation core processor family integrated graphics controller (rev 09) (prog-if 00 [vga controller]) 01:00.0 vga compatible controller: advanced micro devices, inc. [amd/ati] whistler [radeon hd 6730m/6770m/7690m xt] (rev ff) (prog-if ff)

only default intel processor graphics seem chosen now. confirmed running lshw -c display, gives:

*-display                   description: vga compatible controller    product: 2nd generation core processor family integrated graphics controller    vendor: intel corporation    physical id: 2    bus info: pci@0000:00:02.0    version: 09    width: 64 bits    clock: 33mhz    capabilities: vga_controller bus_master cap_list rom    configuration: driver=i915 latency=0    resources: irq:36 memory:c0000000-c03fffff memory:b0000000-bfffffff ioport:6000(size=64)

now problem

this why decided try , create custom xorg.conf file in system in order able asign graphics card display directly. but, when start ubuntu file in /usr/share/x11/xorg.conf.d, error not know how resolve.

the contents of file are:

section "serverlayout"     identifier "amd-layout"     screen 0 "amd-screen" 0 0 endsection  section "device"     identifier "amd-device"     driver "radeon"     busid "pci:1:0:0" endsection  section "device"     identifier "intel"     driver "intel"     option "accelmethod" "uxa"     busid "pci:0@0:2:0" endsection  section "monitor"     identifier "amd-monitor"     option "vendorname" "ati proprietary driver"     option "modelname" "generic autodetecting monitor"     option "dpms" "true" endsection  section "screen"     identifier "amd-screen"     device "amd-device"     gpudevice "intel"     monitor "amd-monitor"     defaultdepth 24     subsection "display"         viewport   0 0         depth     24     endsubsection endsection

the reading /var/log/xorg.0.log of error is:

[    41.323] (ee) screen(s) found, none have usable configuration. [    41.323] (ee)  fatal server error: [    41.323] (ee) no screens found(ee)  [    41.323] (ee)  please consult the x.org foundation support    @ http://wiki.x.org   help.  [    41.323] (ee) please check log file @ "/var/log/xorg.0.log" additional information. [    41.323] (ee)  [    41.326] (ee) server terminated error (1). closing log file.

i have feeling messed when creating xorg.conf file, not know where? see mistake there?


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