Determine which graphics driver Xorg uses
On a fresh Arch Linux installation, I had difficulties with the graphics drivers. In the process, I have installed a lot of different drivers to somehow get the display working. Now I need to determine which driver X is using. How to do that? The installed packages include xf86-video-intel , xf86-video-nouveau , nvidia , xorg-drivers . To solve a strange issue to launch any graphical desktop manager i had to replace nividia-libgl with mesa-libgl . Graphics: Intel HD Graphics 4000 / Nvidia GT 750M The content of Xorg.0.log is: http://pastebin.com/YwiMZmG6
4 Answers 4
You can check the Xorg startup log file, usually /var/log/Xorg.0.log and look at which modules it is loading. By default Xorg can try to autodetect but you can manually force a driver by putting a Device stanza in an Xorg conf file. Here is what the Xorg startup log will look like for an nvidia card and the nvidia proprietary driver.
[ 3702.470] (II) xfree86: Adding drm device (/dev/dri/card0) [ 3702.472] (--) PCI:*(0:3:0:0) 10de:1184:3842:3774 rev 161, Mem @ 0xfa000000/16777216, 0xd8000000/134217728, 0xd6000000/33554432, I/O @ 0x0000cc00/128, BIOS @ 0x. /524288 [ 3702.472] (II) LoadModule: "glx" [ 3702.473] (II) Loading /usr/lib64/opengl/nvidia/extensions/libglx.so [ 3702.476] (II) Module glx: vendor="NVIDIA Corporation" [ 3702.476] compiled for 4.0.2, module version = 1.0.0 [ 3702.476] Module class: X.Org Server Extension [ 3702.476] (II) NVIDIA GLX Module 355.11 Wed Aug 26 16:02:11 PDT 2015 [ 3702.476] (II) LoadModule: "nvidia" [ 3702.476] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so [ 3702.476] (II) Module nvidia: vendor="NVIDIA Corporation" [ 3702.476] compiled for 4.0.2, module version = 1.0.0 [ 3702.476] Module class: X.Org Video Driver [ 3702.476] (II) NVIDIA dlloader X Driver 355.11 Wed Aug 26 15:38:55 PDT 2015 [ 3702.476] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs [ 3702.476] (++) using VT number 7 How do I find out which driver a piece of hardware is using?
Today I’m trying to figure out which driver is best for my USB wireless dongle. Everywhere I look I just see Ralink STA but this isn’t telling me which module this actually is. I’m sure there’s a way of looking it up but the computer should be able to tell me, shouldn’t it? Meta: This question is open to any piece of hardware, not just my wireless card. It would be helpful if we had a thread of useful diagnostic procedures so that other people can find out what’s going on with their hardware.
2 Answers 2
lshw
lshw is a very useful tool for finding details about all your hardware. It it should be able to tell you all sorts of nonsense — some useful, some not. In my case here’s what sudo lshw -c network gave me about my wired card:
*-network description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:09:00.0 logical name: eth1 version: 03 serial: xx:xx:xx:xx:xx:xx size: 10Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s resources: . The driver is buried in the configuration: section near the end.
If you just want a quick list of the modules in use, you could use this:
sudo lshw | grep -Eo 'driver=[^ ]+' | sort -u | cut -d\= -f2 Linux kernel — check currently used drivers
Is it possible to check what drivers from linux kernel source are used for currently working devices in the system? I know that usually device drivers are written as kernel modules, but some of them have cryptic names and I would want to see if there is some listing that would say: deviceA : moduleA (or inform me that driver was built to the kernel during compilation) I need to modify some source code of current hardware drivers and I was wondering what is the easiest way to pinpoint exactly which drivers my hardware is using. To be exact I wanted to know what drivers are used by my keyboard, mouse, hard drive and network card. I am using Ubuntu 12.04 distribution.
1 Answer 1
You can list all currently running modules by running using lsmod . To retrieve information about a module and assosiated devices, etc, simply run modinfo
To see which driver is loaded for each particular device, the easiest is to run hwinfo . The command gives a lot of information, also not driver related info. For a overview you should run it as hwinfo —short
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