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Ticket Resolution Summary Owner Reporter
#351 fixed --use-display seems to be broken ahuillet ahuillet

Using --use-display produces the following error message:

Traceback (most recent call last):
  File "./scripts/xpra", line 6, in <module>
    sys.exit(xpra.scripts.main.main(__file__, sys.argv))
  File "/mnt/data/src/xpra/src/build/lib.linux-x86_64-2.7/xpra/scripts/main.py", line 433, in main
    return run_server(parser, options, mode, script_file, args)
  File "/mnt/data/src/xpra/src/build/lib.linux-x86_64-2.7/xpra/scripts/server.py", line 459, in run_server
    xvfb_pid = get_pid()
  File "/mnt/data/src/xpra/src/build/lib.linux-x86_64-2.7/xpra/scripts/server.py", line 96, in get_pid
    from xpra.x11.gtk_x11.prop import prop_get
  File "/mnt/data/src/xpra/src/build/lib.linux-x86_64-2.7/xpra/x11/gtk_x11/prop.py", line 27, in <module>
    X11Window = X11WindowBindings()
  File "core_bindings.pyx", line 60, in xpra.x11.bindings.core_bindings.X11CoreBindings.__cinit__ (xpra/x11/bindings/core_bindings.c:791)
AssertionError: display is not set!
#1859 fixed --use-display: XAUTHORITY is not honoured Antoine Martin mviereck

System: debian 9, winswitch repository

Since xpra v2.3-r19246 xpra does not use/regard XAUTHORITY to access a display with --use-display if the specified display uses cookie authentication. It fails with 'no protocol specified'.

Code to reproduce:

/usr/bin/Xvfb :40 -screen 0 1920x1080x24 \
  -nolisten tcp -dpms -s off -retro \
  +extension Composite +extension RANDR +extension RENDER +extension GLX\
  +extension XTEST \
  -auth /tmp/cookie \

sleep 2
xauth -f /tmp/cookie add :40 . $(mcookie)
# env DISPLAY=:40 XAUTHORITY=/tmp/cookie xterm   #no error message
env DISPLAY=:40 XAUTHORITY=/tmp/cookie xpra start :40 --use-display  --start-via-proxy=no --daemon=no
#908 wontfix --with-Xdummy --with-Xdummy_wrapper options not honored across invocations of setup.py Antoine Martin jonathan.underwood

It used to be the case that you could specify --with-Xdummy --with-Xdummy_wrapper when running setup.py build to force selection of the Xdummy wrapper rather than Xvfb without having the Xorg detection stuff kick in. Subsequently, running a python setup.py --skip-build install (without --with-Xdummy --with-Xdummy_wrapper) would install an xpra.conf file which used Xdummy, as expected.

Currently, unless --with-Xdummy --with-Xdummy_wrapper is specified both with build and install, the Xorg detection stuff kicks in during install, and a xpra.conf using Xvfb is installed.

Logically, I expect xpra.conf to be created during build, and whatever is present during install is just installed if we're using --skip-build. I'm not sure when this crept in.

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