Alvr pipewire. html>cc

pactl info: Nombre del servidor: PulseAudio (on PipeWire 0. Because the scripts are installed, but PipeWire isn't selected, alvr no longer properly functions. PipeWire API. sink_properties: properties for the sink. The client communicates with the driver through TCP or UDP sockets. Check 'Stream game audio' and set audio device to jack in ALVR. graph as a synchronous JACK client with no added latency. name: name of the sink, to be prefixed. from alvr. Its most common use is for Wayland and Flatpak applications to implement screensharing, remote desktop, and other forms of audio and video routing between different pieces of software. 0. 5 but today it started giving me problems so i switched to another one that gave pipewire errors. pw-dump [options] DESCRIPTION. pactl load-module module-null-sink object. ALVR Version: v20. Module Name. PipeWire is a new low-level multimedia framework. PulseAudio has to offer and creates a sink/source when jackdbus is. After the very first installation and configuration, I had both picture and sound on my Quest 2, and I was very blissful. linger=1 media. Oct 20, 2015 · null Discard all samples (playback) or generate zero samples (capture) pipewire PipeWire Sound Server default Default ALSA Output (currently PipeWire Media Server) hdmi:CARD=NVidia,DEV=0 HDA NVidia, HDMI 0 HDMI Audio Output hdmi:CARD=NVidia,DEV=1 HDA NVidia, HDMI 1 HDMI Audio Output hdmi:CARD=NVidia,DEV=2 HDA NVidia, HDMI 2 HDMI Audio Output hdmi:CARD=NVidia,DEV=3 HDA NVidia, HDMI 3 HDMI Audio Home. What extension…? I searched the installation guide for the word "extension" and there's none, so I'm not sure what you mean. The services for both pipewire-pulse and pipewire are running under my user. Quite an exciting release actually bringing much improved audio support on Linux, thanks to it now supporting PipeWire! name: name of the source, to be prefixed. Instructions for working from source code are available online, but are only recommended for the hardy. Manjaro Plasma Apr 4, 2023 · Description ALVR enables you to stream PC VR games over WiFi to your Oculus Quest. 0 installed on windows 10. Both PC and headset are on the same subnet. At the begin, create a new PulseAudio null sink named default_null_sink . The configuration file format and lookup logic is the same as for pipewire. To make sure audio was still working, I rebooted the computer and played some audio files, as well as videos in the browser. name will be prefixed with 'input. This document explains how access control is designed and implemented. In addition to that, it also merges the world of pro-audio with mainstream Linux. It is however much more efficient and runs the complete PipeWire. 9. Audio is still supported by pulseaudio. SteamVR runs OK and shows the headset active (but NOT controllers). Setup wizard completes OK. Description of Problem: I installed a fresh Ubuntu 21. ABSTRACT. Redirect any audio output as a microphone input. 3 of 5 tasks. PIPEWIRE_VM Selects the Virtual Machine PipeWire is running on. If you are on PipeWire, install pipewire-alsa and pipewire-pulse; pavucontrol and pactl (PulseAudio tools used as an example) Game Audio. jackC. Even though we are now working with a different media type and we are capturing instead of playback, you will see that this example is very similar to Tutorial - Part 4: Playing A Tone. However, I've been having trouble getting PipeWire to work on my PC. openSUSE:Pipewire. What I did was this. exe as a non-steam game. Start this script. Run these commands: . 10. A fully configured PipeWire setup runs various pieces, each with their configuration options and files: pipewire: The PipeWire main daemon that runs and coordinates the processing. 1-1) -- sound stopped working. GitHub Action edited this page 5 days ago · 26 revisions. 04 and then installed pipewire just as its indicated here. ALVR is a vr streaming software that allows you to stream SteamVR games to your standalone VR headset. A hierarchical view is shown of Driver nodes and follower nodes. Once QJackCtl starts, go to "Setup -> Options -> Patchbay Persistance". PipeWire was designed with a powerful security model that makes I confirmed module-xrdp-pipewire. All worked fine. Not sure if that script that enabled sound which worked and is now removed affected it. Also streaming via Steam Remote Play works great with a Linux host and has been for a while. Permissions include R (read), W (write), X (execute) and M (metadata). socket is not specified, has the default value true otherwise false. Run ping (IP Address of your headset) on command May 21, 2024 · ALVR Audio Routing is working correctly with Pipewire, Projection, etc. When no command is given, pw-cli starts an interactive session with the default PipeWire instance pipewire-0. That Jul 8, 2024 · VR game streaming tool ALVR adds PipeWire support on Linux. Feb 21, 2024 · Latest update (20. It aims to work alongside Wayland as audio system on top of ALSA. This API is used by all clients that need to communicate with the PipeWire Daemon and provides Saved searches Use saved searches to filter your results more quickly Module Options. Uninstalling and reinstalling v20. 5. class=Audio/Sink sink_name=default_null_sink channel_map=FL,FR. Install pipewire-pulse, pipewire-jack and carla. ' to generate a capture and playback The easiest way to try PipeWire is to install Fedora Workstation 35 in Boxes or VirtualBox. alvr. Not the OP but same situation. The followers of a driver node as shown below their driver with a + sign in a tree-like representation. PipeWire seems to be a modern and promising solution, so I took the leap and replaced them. Modules; Generated by 1. Quite an exciting release actually bringing much improved audio support on Linux A PipeWire module is effectively a PipeWire client running inside pipewire(1) which can host multiple modules. In the previous step, we installed Fedora's CUDA that doesn't work with ALVR, installing Nvidia's CUDA works and creates directories instead. This is a bitmask of any of the CPU flags. The config file is looked up in the order listed in the SYNOPSIS. Oct 4, 2021 · Pulse Audio Control show no devices what so ever. Drop-in configuration files pipewire-pulse. service pipewire-pulse. service. Select pipewire as the device. Warning. It is built using modern Linux infrastructure and has both performance and security as its core de-sign guidelines. Install Type: Packaged (exe, deb, rpm, etc) Portable (zip) Source (probably, it compiled when I did yay -S alvr) The pw-top program provides a dynamic real-time view of the pipewire node and device statistics. \adb devices. I don't really have a handle on the audio, which is a bit opaque for me in view of Ubuntu and the interplay with pipewire pulse and alsa. PipeWire is a project that aims to greatly improve handling of audio and video under Linux. This puts Linux on par if not on better ALVR v20. ) I followed the previous steps via Debian Wiki, but it didn’t work. Some key features of PipeWire include: Specify one of -o, -i or -l to list the matching optional input and output ports and their links. Be able to provide/consume/process media from any process. namereg_fail: when false attempt to synthesise new source_name if it is already taken. 6. pw-link will not exit but monitor and print new and destroyed ports or links. The streamer can be installed on Windows and Linux, while the client is installed on Android VR headsets. -r | --remote=NAME The name of the remote instance to dump. 3 Dev box I have been testing PipeWire 0. Mar 20, 2023 · So, I'm trying to do three things. 1 Latest. Apr 8, 2024 · VR game streaming tool ALVR adds PipeWire support on Linux; Valve fixes up the new Riven from Cyan Worlds videos on Linux / Steam Deck; Tech-noir musical tactics game All Walls Must Fall is now permanently free; Open Source implementation of GOG Galaxy's Communication Service, Comet sees a first release > See more over 30 days here It's exactly what it says? The alvr dashboard has no connection to SteamVR, so it can't connect to clients. May 16, 2024 · What Pipewire version do you use (pipewire --version). To be clear. conf(5) . 2 (both not working) Note: the 2:5. On the shortcut tab in the launch options put "-vrmode OpenVR" (you need to include the quotes too) and check 'include in VR library'. 3 Multimedia audio controller: Intel Corporation Cannon Lake PCH cAVS (rev 10) The general pipewire service is running fine apparently: $ systemctl --user status pipewire. Support for audio multiplexing, letting users play audio from multiple applications at the same time. PulseAudio is still in use, even if it is being replaced by PipeWire. pipewire 1. This works similar to what. Cannot be enabled when using socket-based permissions. Saved searches Use saved searches to filter your results more quickly Jul 7, 2022 · Introduction. Technologies like Asynchronous Timewarp and Fixed Foveated Rendering are used by ALVR for a smoother, more immersive experience. The PipeWire API consists of several parts: The Stream for a convenient way to send and receive data streams from/to PipeWire. This included the "plenty of tiny buffers" low-latency audio use case typically covered by JACK. d/*. If not specified, defaults to 'filter-<pid>-<module-id>'. Download audio-setup. Notifications. ALVR shows the IP address of the client that I manually configured (which I think means 'connected') as trusted. SYNOPSIS. It aims to offer capture and playback for both audio and video with minimal latency and support for PulseAudio-, JACK-, ALSA- and GStreamer-based applications. When I clicked lauch SteamVR, it opened as expected, however the ALVR driver wasn't being loaded. General Troubleshooting I car Most options can be added to the global configuration or the individual streams: PW_KEY_NODE_NAME: See notes below. Use the sidebar to navigate the wiki. It provides a low-latency, graph-based processing engine on top of audio and video devices that can be used to support the use cases currently handled by both PulseAudio and JACK. 4. xxxxxx. #1 by AVLinux » Fri Sep 22, 2023 8:06 pm. xx. Jul 11, 2024 · PipeWire is a low-latency, graph-based, processing engine and server, for interfacing with audio and video devices. PipeWire was designed to: Be efficient for raw video using fd passing and audio with shared ringbuffers. alvr-org /. sh script and place it in some safe place. alternate_rate: alternate sample rate. i have pipewire installed. \adb uninstall com. Support for out-of-process processing graphs with minimal overhead. Select pipewire or pulse as the device. It has gained steam early on by allowing screen sharing on Wayland desktops, which for security reasons, does not allow an application to access any framebuffer that does not concern it. My sound card is apparently recognized: $ lspci | grep audio. See attached image. Wait until modinfo -F version nvidia doesn't report "ERROR: Module nvidia not found" anymore. Selecting to browse the Library from inside Steam Home causes Big Picture to launch on the desktop. The system tray sound icon’s gone, and pactl info outputs “Connection failure: Connection refused”. 3. conf. Install Type: Packaged ( exe, deb, rpm, etc)*. You need to debug network issue. The Driver nodes are actively using a timer to schedule dataflow in the followers. On Ubuntu/Debian-based systems: sudo apt install pipewire-media-session. Also list the unique link and port ids. ProTip! Updated in the last three days: updated:>2024-07-15 . OPTIONS-h | --help Show help. It creates a server Node that can be controlled from a client. . Jump to: navigation, search. PipeWire is a new low-level multimedia framework designed from scratch that aims to provide: Graph based processing. And since, I have lost the sound on my system. xml (which comes with this repo), then apply your Sep 20, 2018 · After a 'pacman -Syu' update and reboot, I have lost all audio (on a Dell Vostro 7590 laptop). The client will receive registry events for the object and can interact Jul 11, 2024 · 在ALVR中添加PipeWire支持,意味着Linux用户现在能够享受到开箱即用的音频体验,无需额外安装任何第三方软件(除PipeWire系统包外)。这一更新极大地简化了设置流程,使得Linux平台上的音频支持达到了与Windows相当甚至更为优越的水平。 Jul 8, 2024 · VR game streaming tool ALVR adds PipeWire support on Linux. Some key features of PipeWire include: ALVR is made of two applications: the streamer and client. It can be used to support use-cases currently handled by ALSA, PulseAudio, and/or JACK, and aims to improve handling of audio and video under Linux. 00:1f. PipeWire is a media server that can run graphs of multimedia nodes. ALVR also offers to configure your firewall to add rules allowing the Quest 2 client to connect. The client is a single unified APK, named alvr_client_android. However, pipewire is installed for video caputring. Shift+rightclick in the folder and open Powershell and get something like: PS C:\ALVR\ALVR workspace\platform-tools>. pipewire-pulse: The PipeWire PulseAudio Jun 23, 2021 · PipeWire is a drop-in replacement for Pulseaudio and JACK at the same time. The current instance name is displayed at the prompt. To workaround the issue, enable pipewire-media-session service may work by running command: Jul 9, 2024 · VR game streaming tool ALVR adds PipeWire support on Linux. #2187 opened on Jun 10 by Ncarauj012. 24) PipeWire. Overview. The Core API to access a PipeWire instance. Any application that supports Pulse now supports PipeWire, and at the same time it can pull all the clever tricks that access. PipeWire provides a pkg-config file named libpipewire-0. 21. Start Carla through Pipewire, pw-jack carla-rack. PipeWire is a low-level multimedia library and daemon that facili-tates negotiation and low-latency transport of multimedia content be-tween applications, filters and devices. Connect with headset and wait until streaming starts. While the Linux support of ALVR is still quite rough due to various issues with SteamVR, ALVR is a very promising way to stream VR games to your headset via Wi-Fi and a new release is out now with v20. Must be on v19+ Enable Game Audio in ALVR dashboard. modules = [. The "Volume control" panel of KDE shows "no input or output devices found". May 20, 2024 · I've installed ALVR and got it all configured. I would like to know if anyone else is Feb 2, 2024 · VR game streaming tool ALVR adds PipeWire support on Linux; Valve fixes up the new Riven from Cyan Worlds videos on Linux / Steam Deck; Tech-noir musical tactics game All Walls Must Fall is now permanently free; Open Source implementation of GOG Galaxy's Communication Service, Comet sees a first release > See more over 30 days here May 14, 2021 · In 2015 he started working on PipeWire: a project that has come to full fruition in Fedora Workstation 34, where it handles both audio and video. Some of the best features that make PulseAudio a usable tech include: Ability to adjust the volume for each software independently. I've been told that PipeWire is the best Linux audio tool to achieve my goals. The PipeWire state dumper. Play audio through multiple speaker devices at the same time. Portable ( zip) Source. One of the design goals of PipeWire is to be able to closely control and configure all aspects of the processing graph. Jan 26, 2024 · PipeWire is available on most official package repositories: # Debian and derivatives $ sudo apt install -y pipewire pipewire-audio-client-libraries pulseaudio-utils # Fedora and Red Hat $ sudo dnf install -y pipewire pipewire-pulseaudio pipewire-utils pulseaudio-utils # Arch Linux and derivatives $ sudo pacman -S --noconfirm pipewire pipewire-pulse Plug in your Quest. legacy = true: enable backward-compatible access mode. Stream only properties: PW_KEY_NODE_NAME: if not given per stream, the global node. 2, it won't let me update it. 4. Apr 24, 2022 · systemctl --user --now enable pipewire pipewire-pulse; 5. Oct 11, 2023 · Raspberry Pi OS now uses Wayland (instead of X11) with Wayfire (instead of Mutter) by default on Raspberry Pi 4 and Raspberry Pi 5. Quite an exciting release actually bringing much improved audio support on Linux Apr 10, 2023 · ALVR 19. 1 ALVR Settings File: default, only added headset host + IP. 56 and after all the versions to latest 0. By the way, pipewire and pulseaudio are installed as default on Linux MINT 21. If left unspecified, a Dec 21, 2023 · The frames coming from the ALVR streamer are very blurry, no matter how much I crank up the bitrate. PIPEWIRE_LOG_SYSTEMD Enables the use of systemd for the logger, default true. c works on 0. If access. Collection of scripts that uses Distrobox to make playing ALVR on Linux easier - alvr-org/ALVR-Distrobox-Linux-Guide PipeWire. *Installed using the AUR packaged version of alvr. Monitor links and ports. The goal is to provide services such as JACK Bluetooth Radio, Bluetooth Headset, Desktop Environment, Distribution, Version (Bluez, Kernel, and PipeWire): Bluetooth Headset connection. PipeWire implements per client permissions on the objects in the graph. device_id: ALSA card index. c file and use pkg-config to provide the required dependencies: gcc -Wall test1. Make sure sudo dnf install xorg-x11-drv-nvidia-cuda. Connections to other, remote instances can be made. 3 (note: the version suffix may change with future releases of PipeWire). format: sample format. wget + curl (to download podman/distrobox/alvr/etc) xhost (on X11 to allow rootless podman to work with graphical applications) sed (for removing color in logs) pipewire for fully automatic microphone, pulseaudio for basic audio support (automatic microphone is unsupported with it) Mar 2, 2021 · PipeWire. This puts Linux on par if not on better support pipewire; pipewire-jack; pipewire-pulse; qjackctl; Usage. R: An object with permission R is visible to the client. Home. Usually modules are loaded when they are listed in the configuration files. 0 1. PipeWire Is a graph-based audio and video processing engine developed by Wim Taymans, as part of the GNOME project. Nov 3, 2021 · I don't know too much, but it seems that the new pipewire-dmabuf flag allows for more direct reading if the video buffer, in theory allowing for lower latency. 2 had a bug that breaks ALVR in this exact way, it's fixed in 1. 04. Feb 23, 2024 · Key Features. bat as administrator. Have you verified that you registered the alvr extension with SteamVR. In this interview we will talk about where PipeWire came from, where it is at and where Wim sees it going from here. rate: sample rate. Before starting ALVR, run this script and make sure QJackCtl has started and connected. Finally now audio works out of the box on Linux without the need of any external software except the PipeWire system package. All games that work with an Oculus Rift (s) should be compatible with ALVR. Since they've added the Pipewire support, it even works pretty good on Wayland. GitHub Action edited this page Jul 10, 2024 · 26 revisions. 79 and after making a few Mar 28, 2022 · SteamVR Version: 1. pipewire-pulse pipewire-media-session pipewire-jack-dropin pipewire-jack pipewire helvum You don't need any jack2 packages because it uses the pipewire jack emulation. Programs Depending on how the system was configured, you can either run PipeWire and JACK side-by-side or have PipeWire take over the functionality of JACK completely. Kiwi-the-Cat commented on May 16, 2024 . The legacy mode is deprecated. Other settings. I carefully followed the instructions in the README and successfully completed the setup wizard; I read the ALVR Wikis here and here; Environment Hardware Configuration for PipeWire's PulseAudio-compatible daemon. First time usage. Tutorial - Part 5: Capturing Video Frames. Check the firewall settings (Permit UDP/9944 and UDP/9943 port) Alternatively, you can run C:\Program Files\ALVR\add_firewall_rules. Following USB guide on the wiki. sink_name: name for the sink. For example the default configuration file loads several modules: context. ' and 'output. ALVR Settings File: am I supposed to copy/paste the settings file here? Where is it located? (archlinux) SteamVR Version: 2. \adb install -g ALVRClient-fixed. While ALVR is running use helvum to connect Steam audio to ALVR which is shown as alsa-jack. We would like to show you a description here but the site won’t allow us. socket # pavucontrol shows no sound devices, and provides Jan 24, 2023 · sudo apt install wireplumber. PipeWire has a great bluetooth support: because Pulseaudio was reported to have troubles with . There were two main areas that needed to be addressed. This switch improves OS performance, security, and aesthetics (there are window opening/closing animations). 7. PIPEWIRE_CPU Selects the CPU and flags. Games Tested Working Half-Life: Alyx Star Wars Squadron Moss Subnautica Sep 22, 2023 · AV Linux 23 PipeWire tests and tools. On startup, the daemon reads a main configuration file to configure itself. Hard real-time capable plugins. 3 from installer fixed the issue. It is the same as Ubuntu 22. conf can be used, and are recommended. By 2016, Taymans started rethinking the foundations of Pinos, extending its scope to become the standard Linux audio/video daemon. ALVR v20. PipeWire was designed with a powerful security model that makes Jan 18, 2024 · add VAM. The WirePlumber daemon implements the session & policy management service. A new zero-latency jackdbus bridge was added. 2. Switch my sound sources from "stereo sound" to "mono sound". 3. 27. PipeWire is a graph-based processing engine, that focuses on handling multimedia data (audio, video and MIDI mainly). 12. Stream VR games from your PC to your headset via Wi-Fi - Issues · alvr-org/ALVR. It is used by pw-stream and pw-filter to implement the PipeWire media processing nodes. Stream VR games from your PC to your headset via Wi-Fi - Installation guide · alvr-org/ALVR Wiki Try using "system default" instead of "pipewire" for game audio and "default" instead of "pipewire" for the mic. 1-3 version of the ffmpeg package recently added vulkan libs by default and so the author of this package removed the dependency for ffmpeg-vulkan (package removed since). In Rack tab add whichever plugin you want. List IDs. The entry for ALVR was not located in the SteamVR settings add-ons page. Dec 9, 2023 · Description Unable to connect as normal with the latest release. To compile the simple test application, copy it into a test1. The taskbar at the top of the screen is also brand-new and Wayland-native. 1. 2 or stable 2. source_name: name for the source. I am currently using Pipewire, my setup is working fine for my Speakers, USB Headphones and Bluetooth Earbuds. 0 ALVR Cant launch steamvr. I've decided that swimming upstream against PipeWire is probably going to cause me more grief than just getting on with it for the next AV Linux 23 release so on my MXDE-EFL 21. Hi AVL and MX'ers. The ClientNode object is created from the client-node factory that is provided by the libpipewire-module-client-node module. libpipewire-module-avb. It provides a low-latency, graph based processing engine on top of audio and video devices that can be used to support the use cases currently handled by both pulseaudio and JACK. It executes a series of commands listed in the config file. Confirm that the headset and PC are connected in the same LAN. The Filter for a convenient way to implement processing filters. If you prefer a simpler version or your distro’s official repositories don’t have WirePlumber, you can simply install PipeWire Media Session: On Arch-based systems: sudo pacman -S pipewire-media-session. Processing will happen in the client. screenshot from headset. To direct a JACK app to PipeWire, you can use the pw-jack script like this: PIPEWIRE_LOG Specifies a log file to use instead of the default logger. c -o test1 $(pkg-config --cflags --libs libpipewire-0. Verbose port properties. This can be any of the VM types. May 18, 2017 · After a recent update, due to pulseeffect's new dependency on pipewire, I had to install pipewire-pulse and as a result I had to remove pulseaudio. Nodes can run inside the server process or in separate processes, communicating with the server. device: ALSA device. Broken The only thing broken for now is navigating the game library via the SteamVR app or SteamHome. apk. In this tutorial we show how to use a stream to capture a stream of video frames. Flexible and extensible media format negotiation and buffer allocation. navigation search. PipeWire is a server and API for handling multimedia on Linux. Even other distributions that have PipeWire in their repositories generally have a wiki with distro-specific instructions. SteamVR Version: beta 2. Then go to the properties and set the following options. The pw-dump program produces a representation of the current PipeWire state as JSON, including the information on nodes, devices, modules, ports, and other objects. Installation Instructions enable this copr and run: sudo dnf install alvr Active Releases The following pipewire. When a command is given, pw-cli will execute the command and exit. Note that pw-cli also creates a local PipeWire instance. Pipewire 1. Installation. namereg_fail: when false attempt to synthesise new sink_name if it is already taken. In this release we reached two big milestones: seamless audio support on Linux and Meta AppLab release! PipeWire support was in the making for a long time. Per the official FAQ, "you can think of it as a multimedia routing layer on top of the drivers PipeWire:Interface:ClientNode. wsippel commented on May 16, 2024 Searching No Matches. General Troubleshooting. Jul 14, 2019 · IP Address is not displayed on ALVR. WirePlumber is a modular session / policy manager for PipeWire and a GObject-based high-level library that wraps PipeWire’s API, providing convenience for writing the daemon’s modules as well as external tools for managing PipeWire. I can switch back to pulse audio and everything works fine… # Enable pipewire and disable pulse sudo dnf install --allowerasing pipewire-pulseaudio systemctl --user start pipewire-pulse. The default value is subject to change and the legacy mode may be removed in future PipeWire releases. Then on the compatibility tab select 'Force use of a specific compatibility tool' and select Proton 8. Assuming all steps were followed correctly this fixed the issue for me and hopefully you too! PipeWire is a service that facilitates sharing of multimedia content between devices and applications. polygraphene. Feb 28, 2022 · PipeWire is a project that aims to greatly improve handling of audio and video under Linux. I get in ALVR very often the warning: Dec 8, 2023 · I just downloaded the new version of ALVR, and i tried downloading the new linux audio streaming, but i can't select pipewire under Game Audio. 3) ALVR v20. Install Nvidia's CUDA. Updated alvr to newest version, resetted settings, and got "on commect/on disconnect" script as earlier, and still can't get it to work Edit: May be SteamVR problem, I used beta version 1. source_properties: properties for the source. Jul 9, 2024 · While the Linux support of ALVR is still quite rough due to various issues with SteamVR, ALVR is a very promising way to stream VR games to your headset via Wi-Fi and a new release is out now with v20. exe. Sorry if this question is stupid. It's designed to work with devices from containers and flatpak applications. 65. Achieve very low-latency for both audio and Mar 7, 2024 · ALVR Version: v20. Set the patchbay persistence file to alvr. In dual mode, JACK apps will by default use the JACK server. Many performance improvements. Sep 28, 2023 · Enable Game Audio and Microphone in ALVR dashboard. OS Name and Version: EndeavourOS. started. 1. cc pr uo ay nw sg wr vy cj uq