Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen der Seite angezeigt.

--- content:linux_fedora [2026/02/13 19:05] – obel1x
+++ content:linux_fedora [2026/04/10 14:22] (aktuell) – obel1x
@@ Zeile 3: / Zeile 3: @@
 here are some basics for setting up Fedora. Actual Version: 43
-Useful Docs also: https://github.com/devangshekhawat/Fedora-43-Post-Install-Guide
+Useful Docs also: [[https://github.com/devangshekhawat/Fedora-43-Post-Install-Guide|https://github.com/devangshekhawat/Fedora-43-Post-Install-Guide]]
 ===== Graphics =====
-Out of the Box there are not alle Multimedia Codecs installed.
+==== Basic codecs ====
-==== For AMD ====
+Out of the Box there are not all multimedia codecs installed which are needed to decode propietary formats.
+To use h264 and vlc, you need to:
 <code>
+sudo dnf config-manager setopt fedora-cisco-openh264.enabled=1
+sudo dnf install vlc
+sudo dnf install python-vlc
+</code>
+==== Interfaces ====
+There are different Hardware/Software Interfaces that are important for Video acceleration in 2D and 3D.
+From [[https://wiki.archlinux.org/title/Hardware_video_acceleration|https://wiki.archlinux.org/title/Hardware_video_acceleration]] :
+[[https://en.wikipedia.org/wiki/Graphics_processing_unit#GPU_accelerated_video_decoding_and_encoding|Hardware video acceleration]] makes it possible for the video card to decode/encode video, thus offloading the CPU and saving power.
+There are several ways to achieve this on Linux:
+  * [[https://en.wikipedia.org/wiki/Video_Acceleration_API|Video Acceleration API]] (VA-API) is a specification and open source library to provide both hardware accelerated video encoding and decoding, developed by Intel.
+  * [[https://en.wikipedia.org/wiki/VDPAU|Video Decode and Presentation API for Unix]] (VDPAU) is an open source library and API to offload portions of the video decoding process and video post-processing to the GPU video-hardware, developed by NVIDIA.
+  * [[https://gpuopen.com/advanced-media-framework/|Advanced Media Framework SDK]] (AMF) is an open source framework which allows "Optimal" access to AMD GPUs for multimedia processing, developed by AMD.
+  * [[https://en.wikipedia.org/wiki/Nvidia_NVDEC|NVDEC]]/[[https://en.wikipedia.org/wiki/Nvidia_NVENC|NVENC]] - NVIDIA's proprietary APIs for hardware video acceleration, used by NVIDIA GPUs from Fermi onwards.
+  * [[https://www.khronos.org/blog/an-introduction-to-vulkan-video|Vulkan Video]] is an extension of the [[https://wiki.archlinux.org/title/Vulkan|Vulkan]] graphics API designed to support hardware-accelerated video encoding and decoding.
+For comprehensive overview of driver and application support see [[https://wiki.archlinux.org/title/Hardware_video_acceleration#Comparison_tables|#Comparison tables]].
+=== VA-API ===
+This is the most used Interface for video acceleration and decoding itself. The example here is a very old card still supported by AMDGPU:
+<code>
+root@pc-000700080009:~# vainfo
+Trying display: wayland
+Trying display: x11
+libva info: VA-API version 1.22.0
+libva info: User environment variable requested driver 'radeonsi'
+libva info: Trying to open /usr/lib64/dri-nonfree/radeonsi_drv_video.so
+libva info: Trying to open /usr/lib64/dri-freeworld/radeonsi_drv_video.so
+libva info: Found init function __vaDriverInit_1_22
+libva info: va_openDriver() returns 0
+vainfo: VA-API version: 1.22 (libva 2.22.0)
+vainfo: Driver version: Mesa Gallium driver 25.3.6 for AMD CAICOS (DRM 2.51.0 / 6.19.11-200.fc43.x86_64, LLVM 21.1.8)
+vainfo: Supported profile and entrypoints
+      VAProfileMPEG2Simple            : VAEntrypointVLD
+      VAProfileMPEG2Main              : VAEntrypointVLD
+      VAProfileVC1Simple              : VAEntrypointVLD
+      VAProfileVC1Main                : VAEntrypointVLD
+      VAProfileVC1Advanced            : VAEntrypointVLD
+      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
+      VAProfileH264Main               : VAEntrypointVLD
+      VAProfileH264High               : VAEntrypointVLD
+      VAProfileH264High10             : VAEntrypointVLD
+      VAProfileNone                   : VAEntrypointVideoProc
+</code>
+Please check to use the right driver (see beneath), and not maybe r600, which would be the first matching driver, if the environment LIBVA_DRIVER_NAME had not been set.
+=== VDPAU ===
+Basically a good way, to put load from the cpu to gpu. But:
+The Mesa-Project, which is the base-project for all desktops and many programs that did support the interface, now does not any more, which is why that interface from Mesa will die:
+<code>
+https://forums.gentoo.org/viewtopic.php?t=1177112
+Post by grknight » Wed Mar 18, 2026 12:48 pm
+Oh, so mesa removed VDPAU support with version 25.3.0
+Now anything that depended on it should be removed. Please disable all vdpau on your system.
+Edit: Try vaapi instead system-wide. Mesa should provide a vaapi driver for radeonsi
+</code>
+To still be able to unload rendering to GPU, you ma y use the LIBVDPAU-VA-GL ( [[https://github.com/i-rinat/libvdpau-va-gl|https://github.com/i-rinat/libvdpau-va-gl]] ). This Library will offer VDPAU by using VA-API and OpenGL.
+See beaneath for setup.
+=== Vulkan ===
+This is the actual framework for using 3d graphics in Linux. It will be the best supported Interface in the Future.
+To tes, use:
+<code>
+vulkaninfo | grep VK_KHR_video_
+</code>
+==== For AMD ====
+<code>
 dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm
 dnf install libavcodec-freeworld --allowerasing
 dnf install https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
 dnf install mesa-va-drivers-freeworld --allowerasing
+dnf install libvdpau-va-gl
 </code>
+By default, most Linux deliver radeon- driver, which is open source and stable, but lacks important features.
+For AMD, one should switch to AMDGPU if possible (supported card by that driver).
+To do so:
+<code>
+root@pc-000700080009:~# sudo nano /etc/default/grub
+</code>
+Add to GRUB_CMDLINE_LINUX the following Parameters:
+<file>
+radeon.si_support=0 amdgpu.si_support=1 radeon.cik_support=0 amdgpu.cik_support=1
+</file>
+and update Grub:
+<code>
+root@pc-000700080009:~# sudo grub2-mkconfig -o /boot/grub2/grub.cfg
+</code>
+Blacklist radeon - this is needed for Vulkan ro work properly:
+<code>
+root@pc-000700080009:~# echo "blacklist radeon"> /etc/modprobe.d/blacklist-radeon.conf
+</code>
+Reboot. lsmod should than not show radeon any more.
+Environment: to make the Interfaces using the Driver
+<code>
+root@pc-000700080009:~# nano /etc/environment
+</code>
+and put the lines in it:
+<file>
+LIBVA_DRIVER_NAME=radeonsi
+# 10.04.2026 No support from mesa for VDPAU any more, use libvdpau-va-gl
+VDPAU_DRIVER=va_gl
+</file>
+Hint: Also the driver is changed to **AMDGPU**, you need to set **radeonsi**  as value for LIBVA there!
+VDPAU will work via VA-API:
+<code>
+root@pc-000700080009:~# export VDPAU_DRIVER=va_gl
+root@pc-000700080009:~# vdpauinfo
+display: :0   screen: 0
+libva info: VA-API version 1.22.0
+libva info: User environment variable requested driver 'radeonsi'
+libva info: Trying to open /usr/lib64/dri-nonfree/radeonsi_drv_video.so
+libva info: Trying to open /usr/lib64/dri-freeworld/radeonsi_drv_video.so
+libva info: Found init function __vaDriverInit_1_22
+libva info: va_openDriver() returns 0
+API version: 1
+Information string: OpenGL/VAAPI backend for VDPAU
+</code>
+Do not install / use
+  * **libva-vdpau-driver**
+**This would be the other way round (use VA-API via VDPAU Driver!)**
 ==== Intel ====
@@ Zeile 28: / Zeile 197: @@
 </code>
+Environment: to make the Interfaces using the Driver
+<code>
+root@pc-000700080009:~# nano /etc/environment
+</code>
+and put the lines in it:
+<file>
+LIBVA_DRIVER_NAME=intel
+VDPAU_DRIVER=intel
+</file>
 ==== NVIDIA ====