v4.3.1

• fix vpx encoder
• errors when using the 'password-file' command line option
• bash path compatibility issue with source commands
• ssh errors with some versions of paramiko
• failures to locate existing servers (ie: remote start / attach)
• dpi errors with desktop servers, causing blurry scaling
• 'video-scaling' argument parsing errors
• duplicate dpi xsettings
• avoid resource leak warning
• proxy video encoder errors
• update some of the failing unit tests
• MacOS broken helper commands, pixbuf loader path errors
• MacOS packaging of spng codec
• try harder to locate the html5 client installation path
• handle source command stdout pollution, trap all errors

v4.3

• Platforms, build and packaging:
  • arm64 support, including nvenc and nvjpeg
  • non-system header builds (eg: conda)
  • fixed MacOS shadow start via ssh
  • parallel builds
  • don't ship too may pillow plugins
  • easier access to documentation
  • Python 3.10 buffer api compatibility
• Misc:
  • make it easier to silence OpenGL validation warnings
  • don't wait for printers
  • make it easier to autostart
  • 'clean' subcommand
  • flexible 'run_scaled' subcommand
  • more flexible key shortcuts configuration
• Encodings and latency:
  • significant latency and performance improvements
  • spng decoder and encoder
  • jpeg with transparency
  • faster argb module
  • faster nvjpeg module using CUDA, add transparency
  • faster xshape scaling
  • downscale jpeg and webp
  • disable av-sync for applications without audio
  • opaque region support
  • show FPS on client window
  • nvenc to use the same device context as nvjpeg
  • nvenc disable unsupported presets
• Network:
  • make it easier to use SSL
  • support more AES modes: GCM, CFB and CTR
  • forked rencodeplus encoder
• Server:
  • shadow specific areas or monitors
  • faster icon lookup
  • don't trust _NET_WM_PID
  • move all sessions to a sub-directory
  • more reliable server cleanup
  • better VNC support
  • more seamless server upgrades
  • source /etc/profile
  • switch input method to ibus

v3.1.2

• encoding errors with vpx
• fix pkg-info build command
• packaging workarounds for Ubuntu Impish
• fixup missing import in backport causing unix domain socket errors #3316
• minor RPM build fixes

v4.2.3

• network layer:
  • ensure the http headers cache is never modified unintentionally
  • invalid packet encoder names should not cause fatal errors
  • preserve audio packets chunking (avoids an HTML5 client bug)
  • prefer https links
  • prefer sha256 to sha1 for file transfer checksums
  • mmap setup error handling
  • sndbuf_bytes value was incorrect (currently unused)
  • socket timeout too long - broke VNC connections
  • AES DoS with unreasonably large number of password stretching iterations
  • tone down http content security policy for the HTML5 client
  • parsing of remote ssh command output
  • reply with a 404 if we have no http data to send
  • stricter validation of challenge digest attribute
  • stricter validation of packet indexes
  • specifying invalid compressors should not be fatal
  • handle more VNC clients correctly
  • server errors when VNC clients are connected
  • proxy sessions not found due to socket-dirs
  • mmap group lookup
• encodings:
  • don't enable video encoders not present in 'encodings' option
  • ffmpeg H264 errors with unreleased version
  • ffmpeg codecs silencing too many warnings
  • vpx encoder lossless mode detection
  • potential race conditions in the proxy server's encoder loop
  • visual corruption with scaled jpeg updates
  • incorrect error messages with the jpeg YUV decoder
  • error in 'void' paint events (currently unused)
  • CUDA 11.4 and Ampere cards
  • RPM build errors when CUDA is disabled
  • restrict the number of NVENC errors tagged as transient
  • more robust OpenGL picture decoding sanity checks
• packaging and platforms:
  • find the fakeXinerama library more reliably on all platforms
  • platform detection for CentOS / RedHat
  • missing default configuration files on MS Windows
  • missing webp with latest Pillow builds on MacOS
  • build fix for non-amd64 Debian (missing nvfbc)
• clipboard selections getting stuck with MS Windows and MacOS clients
• clipboard errors with some packet encoders sending strings
• authentication modules not honouring socket-dirs option
• make it easier to dismiss the splash screen
• ssh password and key dialogs timing out without being shown
• menu loading race condition causing empty start menu
• window size hints may not have been honoured (rare case)
• honour the force-replace-wm flag when upgrading
• correctly handle command timeouts when probing servers
• test scripts and command line tools fixups: unit tests, U2F tool, audio test, etc
• system tray save-to-file debugging failures
• minor cosmetic fixes to logging messages, unreachable code, icon loading errors
• make it easier to run in a prefixed installation

v3.1.1

• critical bugs:
  • crashes during printer enumeration on MS Windows
  • crashes when starting audio forwarding via the command line
  • disable crashy ffmpeg codecs with 32-bit builds
  • rencode DoS (MacOS and MS Windows binary builds)
  • missing key events
• server stalls:
  • don't load menu data from the main thread
  • don't query the list of printers from the main thread
• build, packaging and platform fixes:
  • Python 3.10 support
  • default to using CUDA 11.4
  • don't try to build NVENC against newer glibc headers (CUDA bug)
  • support NVidia Ampere cards natively
  • compatibility with experimental version of ffmpeg (GBRP9LE)
  • more reliable git branch detection
  • Linux distribution detection bug with Python 3 versions
  • remove unnecessary runtime dependency on distutils
  • clipboard support with python2 servers started from a Wayland environment
  • corrupted cursors on MS Windows
  • make it possible to bundle webcam support on MS Windows (still disabled by default)
  • updated GStreamer dependencies
  • the Debian package name we have to recommend is 'dnspython'
  • generic / common RPM packages should not depend on Python 3
  • use the correct /etc/default path for service configuration
  • MacOS updates for GTK3 3.24.30: patches, dependencies
  • MacOS packaging of the latest Python pillow with webp support
  • add missing C++ files to source snapshots
  • fixup some compatibility issues in previous backports
  • clean generated Cython files (some pyd filenames have changed)
  • use the versioned python interpreter for sourcing files (fix error on CentOS 8)
  • locate libfakeXinerama more reliably (at build time)
  • missing vpx support on CentOS 7.x
  • libwebp 1.2.1
  • pynvml 11.470.66
  • patched rencode - override the buggy version from EPEL
  • arm64 build and packaging tweaks
• network:
  • handle mmap client setup errors correctly
  • mmap unix group lookup API
  • support improved packet encoders
  • use the correct exit code for encryption problems
  • http script errors
  • session 'name' server control command error
  • use cryptographically secure random values with AES
  • prevent DoS using unreasonably large number of key stretching iterations
  • menu errors when there are active VNC connections
  • stricter validation of raw packet indexes
  • better compatibility with packet encoders (start menu, clipboard)
  • reply with 404 if we don't find any data to send
  • correctly parse ssh remote command output
  • MacOS and MS Windows shadow servers missing the default TCP socket (port 14500)
• authentication:
  • stricter validation of challenge digest
  • honour the socket-dirs option in authentication modules
  • fallback to the current user if the one specified is invalid
• encodings:
  • correctly paint OpenGL scaled jpeg YUV screen updates
  • error in 'void' paint handler (normally unused)
  • sha1 data integrity checksum values
  • re-enable non-fatal ffmpeg logging outside suppressed code blocks
  • vpx encoder uninitialized variable undefined behaviour
  • restrict the number of NVENC errors tagged as transient
  • don't use AV sync for 'text', 'desktop' and 'picture' content types
• window geometry:
  • errors with StackMode requests
  • size hints not being honoured in some rare cases
• misc fixes:
  • notifications should not override the exit code
  • stop processing info requests when the server is exiting
  • increase the maximum size of Xdummy resolutions (uses more memory)
  • retry if we fail to load the list of windows the first time (seamless servers)
  • missing notifications when failing to load the icon
  • fix default values shown with 'xpra --help'
  • try harder to exit the server cleanly (kill xvfb and dbus later)
  • honour the force-replace-wm flag when upgrading
  • some modifiers may not have matching key names (ie: VNC clients)
  • don't expose xdg desktop entries that don't have a command to run
  • smooth scrolling with GTK3 clients
  • documentation, debugging, logging tweaks and fixes
  • u2f tool error
  • prefer https for links to the xpra.org website
  • fix saving icons with gi bindings (Python 3)
  • make it easier to run in a prefixed installation
  • cursor regression with Python 2 builds
• proxy fixes:
  • preserve audio packets chunking (avoids an HTML5 client bug)
  • avoid potential race conditions with video encoder re-framing
  • try harder to find a usable session directory to use
• audio fixes:
  • ensure we always stop the 'new-stream' notification process
  • remove aac codec flag causing compatibility errors
  • fix sink test tool command line usage
• 'top' client:
  • server errors when 'top' clients are connected
  • handle unicode window names correctly
  • threading fixes (screen corruption)
  • latency shown as always zero
• html5:
  • less strict content security policy
  • ensure the 'set-initial-position' attribute is initialized
  • avoid sending window attributes set to 'None'
  • fix lz4 with AES incompatibility
  • log the reason when closing
  • don't start a new session again when re-connecting
  • don't try to re-connect when the server is shutting down
  • re-connected session would lose its connection quickly
  • keyboard layout mapping from browser language
  • window snapping to the edge, wrong offset
  • avoid triggering server side errors on OR windows

v4.2.2

• don't build ffmpeg codecs on i386 (crashy)
• prevent crashes caused by svg conversion done in a thread
• always stop the 'new-stream' notification process
• prevent subprocesses from becoming zombies
• clean server on 'stop' or 'exit'
• fix application geometry issues
• show correct default values with "xpra --help"
• source and source-start errors on CentOS 8
• stop responding to 'info' requests when shutting down
• network layer:
  • honour the packet-encoding and compressors options
  • rencode packet encoder is not thread safe!
  • packet errors with bencoder and None values
  • don't assume the packet encoders handle bytes and / or strings
• client issues:
  • backwards compatibility with v3 servers for ssh start
  • incorrect client exit code
  • icon theme errors should not be fatal (triggered on MacOS)
• subcommands:
  • 'start-gui' invalid options shown
  • 'sessions' and 'displays' subcommands do not need a display
  • fix hidden 'wmname' utility subcommand
  • many subcommands should send debug logging to stderr
• platform issues:
  • MacOS dock flickering with 'start-gui'
  • MacOS splash screen hiding password prompts
• menu loading:
  • try harder to find valid menu entries to use
  • skip entries that cannot be executed
  • don't block the main thread when loading menus
• xpra top:
  • handle unicode window titles correctly
  • fix screen corruption due to threading
  • fix latency always showing as zero
• packaging fixes:
  • Debian packages now correctly use /etc/default for systemd service configuration
  • MacOS updates for latest GTK3 builds
  • add missing C++ files for MS Windows builds
  • DEB missing dependency on gst-launch needed for silence detection
• audio:
  • pipeline errors with aac encoder
  • X11 warning when starting microphone forwarding from the command line
• minor / cosmetic fixes:
  • cropped icons shown in html5 client connect page
  • logging, error handling
  • remove unused pulseaudio directories
  • '1080p' resize-display string matching

v4.2.1

• build and packaging fixes:
  • missing dependencies
  • nvjpeg DEB packaging
  • OpenBSD build fix
  • compilation errors on Ubuntu Bionic
  • DEB packages were missing some files (fixes audio silence detection)
  • correct DEB dependency on 'dns' module for SSHFP support
  • remove unused outdated code
  • remove runtime dependency on distutils for 'which'
  • cryptic error when a pkg_config file is missing
• proxy server:
  • deadlocks when queues fill up too quickly
  • honour mode and display
  • disconnections under heavy load
• MS Windows:
  • spurious OpenGL warnings during sanity checks
  • printer enumeration crash and stalls
  • small cursors showing random pixel values
  • updated MS Windows GStreamer module list
• MacOS:
  • MacOS GStreamer packaging of dylib modules, man page
  • MacOS update to GTK 3.24.30
  • MacOS Big Sur error with 'Xpra_Browser' subcommand
• Network:
  • fix RFB server protocol, sockets not timing out with VNC clients
  • invalid error when bind option points to a directory
  • detect wifi network connections more reliably
  • fix 'xpra' packet type auto detection
  • default to ssl-mode if the 'wss' socket option is not specified
  • 'keydata' connection attribute should override other options
  • correct exit code for encryption errors
• Encodings:
  • disable vaapi in ffmpeg codec by default (crashy / buggy)
  • NVENC errors when retrying after a transient failure
  • scroll detection bugs
  • webp encoder invalid memory access (corruption)
• notification forwarding errors with SVG icons
• disable SVG icon resizing (potential crashes on some platforms)
• missing log prefix for 'xpra recover' subcommand
• faster server startup failures: don't wait for things that were not started (ie: audio)
• fix commands started twice when upgrading (ie: ibus-daemon)
• local start with explicit attach was broken on Posix
• 'attach' option should not be forwarded to the server (which then fails)
• invalid window resize counter (used for resize loop prevention)
• missing icon errors when html5 client disconnects from system-wide proxy server
• file transfer errors when a 'top' client is connected
• don't claim that non-interactive clients use the screen
• retry once after X11 query tree errors during startup
• provide XDG_RUNTIME_DIR if it is not defined
• add new 3x4K Xdummy modeline
• minor cosmetic and debug logging fixes

v3.1

Apart from the many important fixes that had accumulated, this release also includes:

• critical fixes for crashes and memory corruption bugs
• better compatibility with newer operating systems and Python versions
• many fixes to the proxy server
• screen update fixes and improvements
• latest xpra top client
• the nvjpeg encoder
• updated application metadata hints
• keyboard and network fixes

And much more.

The detailed release notes can be found here:
https://github.com/Xpra-org/xpra/blob/v3.1.x/src/NEWS

Downloads:
https://github.com/Xpra-org/xpra/wiki/Download

v4.2

• use pinentry for password prompts and ssh prompts
• nvjpeg encoder - also requires this commit to the html5 client
• gui for starting remote sessions
• new subcommands: recover, displays, list-sessions, clean-displays, clean-sockets - #3098, #3099
• many fixes: window initial position, focus, non-opengl paint corruption, slow rendering on MacOS, build scripts, handle smooth scroll events with wayland clients, always lossy screen updates for terminals, clipboard timeout, peercred auth options
• support multiple clients using mmap simultaneously with non-default file paths
• only synchronize xsettings with seamless servers
• automatic desktop scaling is now disabled
• workaround for gnome applications starting slowly

v4.1.3

• fix window geometry constraints being applied wrong b5bfa92
• fix xpra start failures when the display is already running (with use-display=auto) #3077
• fix vp9 libvpx encoder failures with older library versions b24f91a
• fix 'xpra top' errors when the version string is missing 035c7c9
• fix server errors when non interactive clients are connected (ie: 'xpra top') #3089, #3084
• fix http server error on incomplete installations 9f2a80e
• fix http server builtin script handler ebab0e7
• fix icon loading errors causing empty start menus 4d9c8bc
• fix compilation against ffmpeg 4.4 and later on some distributions (ie: CentOS 8) 8d583c2
• exit more quickly with a failure if the VFB failed to start c91509e
• correctly replace existing notifications with the gtk notifier backend 95c6116
• silence some rare errors and stacktraces bff6fce, b594b36, ebb4aa4
• support CUDA 11.3 7f3f6e8