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mike@foo:~>/sbin/lspci -nnv | grep -A10 VGA
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GF106 [GeForce GTS 450] [10de:0dc4] (rev a1) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Device [1043:8365]
Flags: bus master, fast devsel, latency 0, IRQ 45
Memory at dc000000 (32-bit, non-prefetchable) [size=32M]
Memory at d0000000 (64-bit, prefetchable) [size=128M]
Memory at d8000000 (64-bit, prefetchable) [size=64M]
I/O ports at d000 [size=128]
[virtual] Expansion ROM at de000000 [disabled] [size=512K]
Capabilities: <access denied>
Kernel driver in use: nvidia
Kernel modules: nouveau, nvidia
mike@foo:~>cat /etc/os-release
NAME=openSUSE
VERSION="13.2 (Harlequin)"
VERSION_ID="13.2"
PRETTY_NAME="openSUSE 13.2 (Harlequin) (x86_64)"
ID=opensuse
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:opensuse:opensuse:13.2"
BUG_REPORT_URL="https://bugs.opensuse.org"
HOME_URL="https://opensuse.org/"
ID_LIKE="suse"
mike@foo:~>echo $DISPLAY
:0
mike@foo:~>pidof Xorg
4165 1024
mike@foo:~>
mike@foo:~>ls -l /etc/X11/xorg.conf
ls: cannot access /etc/X11/xorg.conf: No such file or directory
mike@foo:~>
Woah!
You can run Linux without xorg.conf !! I forgot to mention it.
You can also use xorg.conf, if you want. It is sometimes useful to edit the xorg.conf depending on needs.
Xorg does not need xorg.conf, it is obsolete, needed only in some corner cases for fine tuning or sometimes a four-liner is needed to load proprietary drivers. Thus, I do not have xorg.conf.
Xorg.conf is only obsolete if you're happy with a default generic config. If you want complete control you still need it and more for optimum performance. On some distros this is even true for default fonts, let alone max refresh rate, mouse characteristics, etc.
# ls /etc/X11/xorg.conf
ls: cannot access '/etc/X11/xorg.conf': No such file or directory
# ls /etc/X11/xorg.conf.d
20-intel.conf 51-synaptics-aptosid.conf
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