add page on scanning, plus minor changes to pipewire.md and amd.md

Author: KeepBotting

src/SUMMARY.md

@@ -69,6 +69,7 @@
    - [TeX Live](./config/texlive.md)
    - [External Applications](./config/external-applications.md)
    - [Printing](./config/print/index.md)
+   - [Scanning](./config/scan/index.md)
    - [Containers and Virtual Machines](./config/containers-and-vms/index.md)
       - [Chroots and Containers](./config/containers-and-vms/chroot.md)
       - [libvirt](./config/containers-and-vms/libvirt.md)

src/config/graphical-session/graphics-drivers/amd.md

@@ -28,3 +28,8 @@ circa 2012.
 ## Video acceleration
 
 Install the `mesa-vaapi` and `mesa-vdpau` packages.
+
+## System Management Interface
+
+The `ROCm-SMI` package is required by some programs (`btop`) in order to monitor
+the GPU.

src/config/media/pipewire.md

@@ -243,3 +243,5 @@ it](#session-management) and restart PipeWire.
 If a session manager is running, check if your user is in the `audio` and
 `video` groups. If not using `elogind`, this is necessary for PipeWire to access
 devices.
+
+On some platforms, the `sof-firmware` package may be required.

src/config/scan/index.md

@@ -0,0 +1,61 @@
+# Scanning
+
+SANE (Scanner Access Now Easy) may be used to acquire images from scanners.
+
+As a prerequisite, install the `sane` package. To list discovered scanners:
+
+```
+$ scanimage -L
+```
+
+For additional options, consult
+[scanimage(1)](https://man.voidlinux.org/scanimage.1).
+
+## Scanner Drivers
+
+If the scanner is not discovered by `scanimage -L`, it may require a driver.
+
+### Driverless scanning
+
+Many different models of scanner support "driverless" scanning via the AirScan
+or WSD protocols. The `sane-airscan` driver may be utilized in these cases. This
+should cover the vast majority of modern scanner hardware.
+
+Applications acting as frontends to SANE will also use the `sane-airscan` driver
+if present, but do not depend on it, so it's recommended to install this and
+have it available.
+
+### Other scanner drivers
+
+If the scanner is not detected with `sane-airscan`, a manufacturer-specific
+driver may be required.
+
+#### HP
+
+See [HP drivers](../print/index.md#hp-drivers).
+
+#### Brother
+
+- `brother-brscan3`
+- `brother-brscan4`
+- `brother-brscan5`
+
+#### Epson
+
+- `imagescan`
+
+#### Samsung
+
+- `samsung-unified-driver`
+
+## Frontend Applications
+
+The traditional XSane frontend is available as `xsane`.
+
+### GNOME
+
+GNOME's Document Scanner is available as `simple-scan`.
+
+### KDE
+
+Two KDE applications are available: `skanpage` and `skanlite`.