Nouveau

https://nouveau.freedesktop.org
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Nouveau is a free and open-source accelerated driver for NVIDIA GPUs, providing Linux kernel driver...
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### Verify Direct Rendering and NVIDIA Driver

Source: https://nouveau.freedesktop.org/REnouveau.html

Example output from glxinfo indicating successful direct rendering and NVIDIA driver installation.

```text
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
... 
client glx vendor string: NVIDIA Corporation
... 
OpenGL vendor string: NVIDIA Corporation
```

--------------------------------

### Install Valgrind-mmt

Source: https://nouveau.freedesktop.org/Valgrind-mmt.html

Clone the Valgrind repository, configure with the specified prefix, and install. This sets up Valgrind with the mmt tool.

```bash
git clone https://github.com/envytools/valgrind.git
cd valgrind
./autogen.sh
./configure --prefix=...
make
make install
```

--------------------------------

### Install Dependencies on Ubuntu

Source: https://nouveau.freedesktop.org/REnouveau.html

Command to install necessary development packages for REnouveau on Ubuntu.

```bash
sudo apt-get install build-essential cvs mesa-common-dev libsdl1.2-dev libxvmc-dev nvidia-glx-dev dialog libxml2-dev
```

--------------------------------

### Parse Unknown Command Example

Source: https://nouveau.freedesktop.org/REnouveau.html

Example of an unknown GPU command identified by REnouveau, showing its size, subchannel, and offset.

```text
00043538  size 1, subchannel 1 (0xbeef5097),offset 0x1538,increment
00000001    NV54TCL[0x1538/4]
```

--------------------------------

### Start Xorg and Multiple Xterms

Source: https://nouveau.freedesktop.org/Valgrind-mmt.html

Before tracing with Valgrind, ensure a window manager is not loaded by starting a plain Xorg binary. This command launches multiple xterm instances in a loop.

```bash
export DISPLAY=:0; while [ true ]; do xterm; sleep 1; done
```

--------------------------------

### Install Dependencies on Fedora

Source: https://nouveau.freedesktop.org/REnouveau.html

Command to install development packages for REnouveau on Fedora.

```bash
yum install dialog SDL-devel libXvMC-devel libxml2-devel xorg-x11-drv-nvidia-devel
```

--------------------------------

### Example Kernel Log Output

Source: https://nouveau.freedesktop.org/Bugs.html

This is an example of the expected output from a `dmesg` command, showing kernel version and boot information. It helps identify potential issues during boot.

```log
[    0.000000] Linux version 2.6.34-gentoo-r1 (root@localhost) (gcc version 4.3.4 (Gentoo 4.3.4 p1.1, pie-10.1.5) ) #1 PREEMPT Mon Aug 2 16:04:12 EEST 2010
[    0.000000] Command line: root=/dev/sda5
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  BIOS-e820: 0000000000000000 - 000000000009f800 (usable)
[    0.000000]  BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)

```

--------------------------------

### Query Current Randr12 Configuration

Source: https://nouveau.freedesktop.org/Randr12.html

Use 'xrandr -q' to display the current monitor setup, including connected outputs, their resolutions, and timings. This is useful for understanding the existing configuration before making changes.

```bash
xrandr -q
```

--------------------------------

### Parse Known Command Example

Source: https://nouveau.freedesktop.org/REnouveau.html

Example of a known GPU command (STENCIL_BACK_MASK) identified by REnouveau, showing its offset and symbolic name.

```text
00043398  size 1, subchannel 1 (0xbeef5097),offset 0x1398,increment
000000ff    NV54TCL.STENCIL_BACK_MASK
```

--------------------------------

### Extract Firmware Files with Perl

Source: https://nouveau.freedesktop.org/NVC0_Firmware.html

Use this perl script with demmio to extract firmware into separate files based on memory addresses. Ensure demmio is installed and the mmiotrace log is available.

```bash
demmio -f mmiotrace.log.xz | perl -e \
'open($fh409c, ">fuc409c"); open($fh409d, ">fuc409d"); open($fh41ac, ">fuc41ac"); open($fh41ad, ">fuc41ad");
%m = ("0x409184" => $fh409c, "0x4091c4" => $fh409d, "0x41a184" => $fh41ac, "0x41a1c4" => $fh41ad);
while (<>) { exit if (/0x409840/); next if (!/W (0x4(?:09|1a)1[c8]4) .* <= (?:.*0x)?(.*)/); print { $m{$1} } pack "I", hex($2);}'

```

--------------------------------

### Test VP2 Acceleration with MPlayer

Source: https://nouveau.freedesktop.org/VP2.html

Run MPlayer with the vdpau video output driver to test VP2 acceleration. Ensure you have a compatible kernel and Mesa version, and a libvdpau installed to the new prefix if not overwriting system installs.

```bash
mplayer -vo vdpau -vc ffmpeg12vdpau,ffh264vdpau, foo.mp4
```

--------------------------------

### Xorg Configuration for Multi-Monitor Setup

Source: https://nouveau.freedesktop.org/MultiMonitorDesktop.html

This configuration enables Xinerama for a unified desktop across multiple screens. Ensure 'Xinerama' is set to 'on' and 'Clone' is set to 'off'. Each monitor requires a dedicated Screen section, and Device sections must specify the correct BusID and ZaphodHeads option for each connector.

```xorg.conf
Section "ServerLayout"
    Identifier  "Layout0"
    Option      "Xinerama" "on"
    Option      "Clone"    "off"
    # You would need one screen for each monitor
    Screen   0  "Screen0"
    Screen   1  "Screen1"  RightOf "Screen0"
    Screen   2  "Screen2"  LeftOf  "Screen0"
    Screen   3  "Screen3"  LeftOf  "Screen2"
EndSection

Section "Device"
    Identifier  "Device0"
    Driver      "nouveau"
    # Actual PCI location of first card/gpu
    BusID       "PCI:9:0:0"
    # Actual connector - as reported by /sys/class/drm/card0-xx (except HDMI, which is HDMI-x instead of HDMI-A-x)
    Option      "ZaphodHeads" "DVI-I-1"
    # Screen number for that PCI device, i.e. 0, 1, etc.
    Screen      0
EndSection
Section "Device"
    Identifier  "Device1"
    Driver      "nouveau"
    # Actual PCI location of first card/gpu
    BusID       "PCI:9:0:0"
    # Actual connector - as reported by /sys/class/drm/card0-xx (except HDMI, which is HDMI-x instead of HDMI-A-x)
    Option      "ZaphodHeads" "DVI-I-2"
    # Screen number for that PCI device, i.e. 0, 1, etc.
    Screen      1
EndSection
Section "Device"
    Identifier  "Device2"
    Driver      "nouveau"
    # Actual PCI location of second card/gpu
    BusID       "PCI:8:0:0"
    # Actual connector - as reported by /sys/class/drm/card1-xx (except HDMI, which is HDMI-x instead of HDMI-A-x)
    Option      "ZaphodHeads" "DVI-I-3"
    # Screen number for that PCI device, i.e. 0, 1, etc.
    Screen      0
EndSection
Section "Device"
    Identifier  "Device3"
    Driver      "nouveau"
    # Actual PCI location of second card/gpu
    BusID       "PCI:8:0:0"
    # Actual connector - as reported by /sys/class/drm/card1-xx (except HDMI, which is HDMI-x instead of HDMI-A-x)
    Option      "ZaphodHeads" "DVI-I-4"
    # Screen number for that PCI device, i.e. 0, 1, etc.
    Screen      1
EndSection

Section "Screen"
    Identifier  "Screen0"
    Device      "Device0"
EndSection
Section "Screen"
    Identifier  "Screen1"
    Device      "Device1"
EndSection
Section "Screen"
    Identifier  "Screen2"
    Device      "Device2"
EndSection
Section "Screen"
    Identifier  "Screen3"
    Device      "Device3"
EndSection
```

--------------------------------

### Preconfigure Monitor Layout with LeftOf Option

Source: https://nouveau.freedesktop.org/Randr12.html

To preconfigure a side-by-side monitor setup, modify the 'Monitor' sections in xorg.conf. Assign the correct identifiers and use the 'Option "LeftOf"' or 'Option "RightOf"' to specify the relationship between monitors.

```xorg.conf
Section "Monitor"
  Identifier   "DVI-D-0"
  ...
Section "Monitor"
  Identifier   "VGA-0"
  ...
  Option "LeftOf" "DVI-D-0"
```

--------------------------------

### Install REnouveau on Mandriva

Source: https://nouveau.freedesktop.org/REnouveau.html

Command to install the REnouveau package on Mandriva Linux using urpmi.

```bash
urpmi renouveau
```

--------------------------------

### List Graphics Providers

Source: https://nouveau.freedesktop.org/Optimus.html

Use `xrandr --listproviders` to check if your system recognizes both Intel and Nouveau graphics providers. This is a prerequisite for PRIME GPU offloading.

```bash
$ xrandr --listproviders 
Providers: number : 2
Provider 0: id: 0x8a cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 2 outputs: 2 associated providers: 1 name:Intel
Provider 1: id: 0x66 cap: 0x7, Source Output, Sink Output, Source Offload crtcs: 2 outputs: 5 associated providers: 1 name:nouveau

```

--------------------------------

### Example OpenGL Error Message

Source: https://nouveau.freedesktop.org/REnouveauDumps.html

This is an example of an OpenGL error that may appear during REnouveau testing. It is generally safe to ignore these errors when simply making a dump.

```text
"Latest OpenGL Error: 1282" or similar
```

--------------------------------

### Run Nouveau Demo with Root Privileges

Source: https://nouveau.freedesktop.org/NouveauDemo.html

The compiled Nouveau demo binary requires access to the DRM module, so it must be run with root privileges. Use 'sudo' to execute the demo.

```bash
sudo ./nouveau_demo
```

--------------------------------

### Automatically Configure a New Monitor

Source: https://nouveau.freedesktop.org/Randr12.html

Enable a newly connected monitor and automatically set its optimal resolution. Replace <display> with the name of the connected monitor.

```bash
xrandr --output <display>  --auto
```

--------------------------------

### Configure Virtual Display in xorg.conf

Source: https://nouveau.freedesktop.org/Randr12.html

To configure a framebuffer for multiple monitors that start side-by-side after X starts, add a 'Virtual x y' setting to the 'Display' section within the 'Screen' section of your xorg.conf.

```xorg.conf
Section "Screen"
  Identifier   "Your Screen identifier here"
  DefaultDepth 24
  SubSection "Display"
    Depth      24
    Virtual 3360 1050
  EndSubSection
  Device       "Your Device identifier here"
EndSection
```

--------------------------------

### Checkout nv10_demo using CVS

Source: https://nouveau.freedesktop.org/NouveauDemo.html

Use this command to anonymously log in to the CVS repository and checkout the nv10_demo project. After checking out, navigate into the directory and run 'make'.

```bash
cvs -d:pserver:anonymous@nouveau.cvs.sourceforge.net:/cvsroot/nouveau login
cvs -z3 -d:pserver:anonymous@nouveau.cvs.sourceforge.net:/cvsroot/nouveau co -P nv10_demo
```

--------------------------------

### Configure Specific Engine

Source: https://nouveau.freedesktop.org/KernelModuleParameters.html

Example of disabling the PDISP engine using the `config` parameter.

```bash
PDISP=0
```

--------------------------------

### Add Second Screen with Discrete GPU using xrandr

Source: https://nouveau.freedesktop.org/Optimus.html

After setting up Reverse PRIME, use this command to configure and add a second screen connected to the discrete GPU.

```bash
$ xrandr --output HDMI-1 --auto --above LVDS1
```

--------------------------------

### Set Framebuffer Console Resolution

Source: https://nouveau.freedesktop.org/TroubleShooting.html

Use the 'video=' kernel parameter to set a specific resolution for the framebuffer console. For example, to set it to 1280x1024.

```bash
video=1280x1024
```

--------------------------------

### Configure Reverse PRIME with xrandr

Source: https://nouveau.freedesktop.org/Optimus.html

Use this command to set the Nouveau driver as the output source for the primary GPU, enabling access to the discrete GPU's outputs.

```bash
$ xrandr --setprovideroutputsource nouveau Intel
```

--------------------------------

### Set Specific Subdevice Debug Level

Source: https://nouveau.freedesktop.org/KernelModuleParameters.html

Example of setting the debug level for the PTHERM and PTIMER subdevices to 'debug' using the `debug` parameter.

```bash
nouveau.debug="PTHERM=debug,PTIMER=debug"
```

--------------------------------

### Configure Driver Options

Source: https://nouveau.freedesktop.org/KernelModuleParameters.html

The `config` parameter allows configuring various driver aspects using a comma-separated list of key=value pairs. Values are typically integers (0/1 for booleans), except for `NvBios` which is a string.

```bash
config
```

--------------------------------

### Test VDPAU with MPlayer

Source: https://nouveau.freedesktop.org/VideoAcceleration.html

Use this command to test VDPAU acceleration with MPlayer for specific video codecs. Ensure your Mesa library is correctly installed.

```bash
mplayer -vo vdpau -vc ffmpeg12vdpau,ffwmv3vdpau,ffvc1vdpau,ffh264vdpau,ffodivxvdpau, <file>
```

--------------------------------

### Run mplayer with VP4 acceleration

Source: https://nouveau.freedesktop.org/VP4.html

Use this command to play video files with VP4 acceleration via VDPAU. Ensure you have extracted firmware and installed the correct Mesa and kernel versions.

```bash
mplayer -vo vdpau -vc ffmpeg12vdpau,ffvc1vdpau,ffh264vdpau,ffodivxvdpau, <file>
```

--------------------------------

### List display outputs with xrandr

Source: https://nouveau.freedesktop.org/Dithering.html

Use this command to list all connected display outputs and their properties, including dithering support. This helps identify the correct output to configure.

```bash
xrandr --prop
```
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