cat  /run/user/1000/xpra/:100.log


2020-05-21 11:29:23,005 cannot use uinput for virtual devices:
2020-05-21 11:29:23,006  [Errno 19] Failed to open the uinput device: No such device

X.Org X Server 1.20.8
X Protocol Version 11, Revision 0
Build Operating System: Linux 4.19.116 x86_64
Current Operating System: Linux nixos 5.4.41 #1-NixOS SMP Thu May 14 05:58:30 UTC 2020 x86_64
Kernel command line: BOOT_IMAGE=(hd3,gpt5)//kernels/klvgkx3kqs80qfi09h9q4d4r6r41bmfp-linux-5.4.41-bzImage systemConfig=/nix/store/rr45dzbsqmzdm4hhhp06w3j06cbvfmm5-nixos-system-nixos-20.03.1926.f45ccd9d20b init=/nix/store/rr45dzbsqmzdm4hhhp06w3j06cbvfmm5-nixos-system-nixos-20.03.1926.f45ccd9d20b/init loglevel=4
Build Date: 29 March 2020  08:21:49PM

Current version of pixman: 0.38.4
    Before reporting problems, check http://wiki.x.org
    to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
    (++) from command line, (!!) notice, (II) informational,
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(++) Log file: "/run/user/1000/xpra/Xorg.:100.log", Time: Thu May 21 11:29:23 2020
(++) Using config file: "/nix/store/6h3dizb1gak30n2n5rpy4wj35lzkmncv-xpra-4.0.1/etc/xpra/xorg.conf"
(==) Using system config directory "/nix/store/kkad13y3nkxw9grhw4jca6nsf38lhb2m-xorg-server-1.20.8/share/X11/xorg.conf.d"
2020-05-21 11:29:25,226 Warning: failed to create socket directory '/run/xpra'
2020-05-21 11:29:25,226  [Errno 13] Permission denied: '/run/xpra'
2020-05-21 11:29:25,226 created unix domain socket '/run/user/1000/xpra/nixos-100'
2020-05-21 11:29:25,226 cannot create group socket '/run/xpra/nixos-100'
2020-05-21 11:29:25,226  [Errno 2] No such file or directory
2020-05-21 11:29:25,226  /run/xpra does not exist
2020-05-21 11:29:25,298 pointer device emulation using XTest
Gtk-Message: 11:29:25.320: Failed to load module "appmenu-gtk-module"
2020-05-21 11:29:25,338 serving html content from '/nix/store/6h3dizb1gak30n2n5rpy4wj35lzkmncv-xpra-4.0.1/share/xpra/www'
2020-05-21 11:29:25,376 Warning: failed to load the mdns publisher
2020-05-21 11:29:25,376  No module named 'avahi'
2020-05-21 11:29:25,376  either install the 'python-avahi' module
2020-05-21 11:29:25,376  or use the 'mdns=no' option
2020-05-21 11:29:25,393 D-Bus notification forwarding is available
2020-05-21 11:29:25,401 pulseaudio server started with pid 2402
2020-05-21 11:29:25,401  private server socket path:
2020-05-21 11:29:25,401  '/run/user/1000/xpra/pulse-100/pulse/native'
E: [pulseaudio] ltdl-bind-now.c: Failed to open module module-x11-publish.so: module-x11-publish.so: cannot open shared object file: No such file or directory
E: [pulseaudio] module.c: Failed to open module "module-x11-publish".
2020-05-21 11:29:25,597 GStreamer version 1.16.2 for Python 3.7.7 64-bit

(Xpra:2373): Gtk-CRITICAL **: 11:29:25.670: gtk_widget_realize: assertion 'widget->priv->anchored || GTK_IS_INVISIBLE (widget)' failed
2020-05-21 11:29:25,677 Warning: webcam forwarding is disabled
2020-05-21 11:29:25,677  the virtual video directory '/sys/devices/virtual/video4linux' was not found
2020-05-21 11:29:25,677  make sure that the 'v4l2loopback' kernel module is installed and loaded
2020-05-21 11:29:25,677 found 0 virtual video devices for webcam forwarding
2020-05-21 11:29:25,687 Error: lpinfo command failed to run
2020-05-21 11:29:25,687  [Errno 2] No such file or directory: '/usr/sbin/lpinfo': '/usr/sbin/lpinfo'
2020-05-21 11:29:25,687  command used: '/usr/sbin/lpinfo --make-and-model Generic PDF Printer -m'
2020-05-21 11:29:25,696 printer forwarding enabled using postscript
2020-05-21 11:29:25,697 Warning: cannot watch for application menu changes without pyinotify:
2020-05-21 11:29:25,697  No module named 'pyinotify'
2020-05-21 11:29:25,709 xpra is ready.
2020-05-21 11:29:25,714 xpra GTK3 X11 version 4.0.1-r26380 64-bit
2020-05-21 11:29:25,790  uid=1000 (mjlbach), gid=100 (users)
2020-05-21 11:29:25,791  running with pid 2373 on Linux
2020-05-21 11:29:25,791  connected to X11 display :100 with 24 bit colors
2020-05-21 11:29:25,799 Error during threaded setup of <class 'xpra.server.mixins.child_command_server.ChildCommandServer'>
Traceback (most recent call last):
  File "/nix/store/6h3dizb1gak30n2n5rpy4wj35lzkmncv-xpra-4.0.1/lib/python3.7/site-packages/xpra/server/server_base.py", line 172, in threaded_init
    c.threaded_setup(self)
  File "/nix/store/6h3dizb1gak30n2n5rpy4wj35lzkmncv-xpra-4.0.1/lib/python3.7/site-packages/xpra/server/mixins/child_command_server.py", line 107, in threaded_setup
    load_xdg_menu_data()
  File "/nix/store/6h3dizb1gak30n2n5rpy4wj35lzkmncv-xpra-4.0.1/lib/python3.7/site-packages/xpra/platform/xposix/xdg_helper.py", line 233, in load_xdg_menu_data
    xdg_menu_data = do_load_xdg_menu_data()
  File "/nix/store/6h3dizb1gak30n2n5rpy4wj35lzkmncv-xpra-4.0.1/lib/python3.7/site-packages/xpra/platform/xposix/xdg_helper.py", line 264, in do_load_xdg_menu_data
    menu = parse()
  File "/nix/store/xqhbn34zxm7z27qpsfjk7y57kjqs9b3d-python3.7-pyxdg-0.26/lib/python3.7/site-packages/xdg/Menu.py", line 1128, in parse
    return XMLMenuBuilder(debug).parse(filename)
  File "/nix/store/xqhbn34zxm7z27qpsfjk7y57kjqs9b3d-python3.7-pyxdg-0.26/lib/python3.7/site-packages/xdg/Menu.py", line 637, in parse
    self.post_parse(menu)
  File "/nix/store/xqhbn34zxm7z27qpsfjk7y57kjqs9b3d-python3.7-pyxdg-0.26/lib/python3.7/site-packages/xdg/Menu.py", line 983, in post_parse
    self.post_parse(submenu)
  File "/nix/store/xqhbn34zxm7z27qpsfjk7y57kjqs9b3d-python3.7-pyxdg-0.26/lib/python3.7/site-packages/xdg/Menu.py", line 997, in post_parse
    elif menuentry.Type == MenuEntry.TYPE_SYSTEM:
AttributeError: 'MenuEntry' object has no attribute 'Type'
2020-05-21 11:29:25,897 15.5GB of system memory
2020-05-21 11:29:26,200 OpenGL is supported on display ':100'
2020-05-21 11:29:30,022 New unix-domain connection received
2020-05-21 11:29:30,022  on '/run/user/1000/xpra/nixos-100'
2020-05-21 11:29:30,025 Handshake complete; enabling connection
2020-05-21 11:29:30,038  mmap is enabled using 256MB area in /run/user/1000/xpra/xpra.lgaswap_.mmap
2020-05-21 11:29:30,039 Python/GTK3 Linux x11 client version 4.0.1-r26380 64-bit
2020-05-21 11:29:30,039  OpenGL is enabled with GeForce GTX 1070/PCIe/SSE2
2020-05-21 11:29:30,039  connected from 'nixos' as 'mjlbach'
2020-05-21 11:29:30,093 setting key repeat rate from client: 600ms delay / 40ms interval
2020-05-21 11:29:30,093 setting keymap:
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning:          Unsupported high keycode 372 for name <I372> ignored
>                   X11 cannot support keycodes above 255.
>                   This warning only shows for the first high keycode.
Errors from xkbcomp are not fatal to the X server
2020-05-21 11:29:30,105 setting keyboard layout to 'us'
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning:          Unsupported high keycode 372 for name <I372> ignored
>                   X11 cannot support keycodes above 255.
>                   This warning only shows for the first high keycode.
Errors from xkbcomp are not fatal to the X server
2020-05-21 11:29:30,160  client root window size is 2560x1440 with 1 display:
2020-05-21 11:29:30,160   :0.0 (602x342 mm - DPI: 108x106) workarea: 2560x1331 at 0x24
2020-05-21 11:29:30,160     DEL DP-0 (598x336 mm - DPI: 108x108)
2020-05-21 11:29:30,181 server virtual display now set to 2560x1440
2020-05-21 11:29:30,184  automatic picture encoding enabled, also available:
2020-05-21 11:29:30,185   h264, vp9, vp8, png, png/P, png/L, webp, rgb24, rgb32, jpeg, h265, mpeg1, mpeg2
2020-05-21 11:29:30,199 Error: processing new connection from Protocol(unix-domain socket:/run/user/1000/xpra/nixos-100):
2020-05-21 11:29:30,199  'MenuEntry' object has no attribute 'Type'
2020-05-21 11:29:30,199 Disconnecting client /run/user/1000/xpra/nixos-100:
2020-05-21 11:29:30,200  server error (error accepting new connection)
2020-05-21 11:29:30,200 client   1 @01.248 Xpra GTK3 X11 server version 4.0.1-r26380 64-bit
2020-05-21 11:29:30,200 client   1 @01.248  running on Linux
2020-05-21 11:29:30,202 xpra client 1 disconnected.
2020-05-21 11:29:30,210 DPI set to 108 x 107
2020-05-21 11:29:30,969 New unix-domain connection received
2020-05-21 11:29:30,969  on '/run/user/1000/xpra/nixos-100'
2020-05-21 11:30:49,465 New unix-domain connection received
2020-05-21 11:30:49,465  on '/run/user/1000/xpra/nixos-100'
2020-05-21 11:30:49,467 Handshake complete; enabling connection
2020-05-21 11:30:49,469  mmap is enabled using 256MB area in /run/user/1000/xpra/xpra.scd4_tr0.mmap
2020-05-21 11:30:49,470 Python/GTK3 Linux x11 client version 4.0.1-r26380 64-bit
2020-05-21 11:30:49,470  OpenGL is enabled with GeForce GTX 1070/PCIe/SSE2
2020-05-21 11:30:49,470  connected from 'nixos' as 'mjlbach'
2020-05-21 11:30:49,475 setting key repeat rate from client: 600ms delay / 40ms interval
2020-05-21 11:30:49,476 keyboard mapping already configured (skipped)
2020-05-21 11:30:49,476  client root window size is 2560x1440 with 1 display:
2020-05-21 11:30:49,476   :0.0 (602x342 mm - DPI: 108x106) workarea: 2560x1331 at 0x24
2020-05-21 11:30:49,476     DEL DP-0 (598x336 mm - DPI: 108x108)
2020-05-21 11:30:49,477 best resolution matching 2560x1440 is unchanged: 2560x1440
2020-05-21 11:30:49,480  automatic picture encoding enabled, also available:
2020-05-21 11:30:49,480   h264, vp9, vp8, png, png/P, png/L, webp, rgb24, rgb32, jpeg, h265, mpeg1, mpeg2
2020-05-21 11:30:49,489 Error: processing new connection from Protocol(unix-domain socket:/run/user/1000/xpra/nixos-100):
2020-05-21 11:30:49,489  'MenuEntry' object has no attribute 'Type'
2020-05-21 11:30:49,490 Disconnecting client /run/user/1000/xpra/nixos-100:
2020-05-21 11:30:49,490  server error (error accepting new connection)
2020-05-21 11:30:49,491 xpra client 2 disconnected.
2020-05-21 11:30:50,411 New unix-domain connection received
2020-05-21 11:30:50,411  on '/run/user/1000/xpra/nixos-100'

 ~
❯ xpra attach :100
2020-05-21 11:30:57,242 Xpra GTK3 X11 client version 4.0.1-r26380 64-bit
2020-05-21 11:30:57,258  running on Linux
2020-05-21 11:30:57,259  window manager is 'KWin'
2020-05-21 11:30:57,603 GStreamer version 1.16.2 for Python 3.7.7 64-bit
2020-05-21 11:30:57,625 Warning: failed to load the GTK3 notification class
2020-05-21 11:30:57,626  Namespace Notify not available
2020-05-21 11:30:57,728 No OpenGL_accelerate module loaded: No module named 'OpenGL_accelerate'
Gtk-Message: 11:30:57.909: Failed to load module "appmenu-gtk-module"
2020-05-21 11:30:57,962 OpenGL enabled with GeForce GTX 1070/PCIe/SSE2
2020-05-21 11:30:58,020 Error: cannot watch for video device changes without pyinotify:
2020-05-21 11:30:58,020  No module named 'pyinotify'
2020-05-21 11:30:58,048  keyboard settings: rules=evdev, model=pc104, layout=us
2020-05-21 11:30:58,058  desktop size is 2560x1440 with 1 screen:
2020-05-21 11:30:58,059   :0.0 (602x342 mm - DPI: 108x106) workarea: 2560x1331 at 0x24
2020-05-21 11:30:58,059     DEL DP-0 (598x336 mm - DPI: 108x108)
2020-05-21 11:30:58,122 enabled fast mmap transfers using 256MB shared memory area
2020-05-21 11:30:58,123 enabled remote logging
2020-05-21 11:30:58,123 Xpra GTK3 X11 server version 4.0.1-r26380 64-bit
2020-05-21 11:30:58,123  running on Linux
/nix/store/p3acn4gw4ydsnc15ciwclrlk0bph1mym-python3.7-pygobject-3.36.0/lib/python3.7/site-packages/gi/overrides/Gtk.py:1632: Warning: g_object_ref: assertion 'G_IS_OBJECT (object)' failed
  return _Gtk_main(*args, **kwargs)
2020-05-21 11:30:58,230 server does not support xi input devices
2020-05-21 11:30:58,230  server uses: xtest
2020-05-21 11:30:58,312 sound output found 2 audio output devices:
2020-05-21 11:30:58,313 sound output  * GP104 High Definition Audio Controller Digital Stereo (HDMI 2)
2020-05-21 11:30:58,313 sound output    alsa_output.pci-0000_01_00.1.hdmi-stereo-extra1
2020-05-21 11:30:58,313 sound output  * Built-in Audio Analog Stereo
2020-05-21 11:30:58,313 sound output    alsa_output.pci-0000_00_1f.3.analog-stereo
2020-05-21 11:30:58,313 sound output  to select a specific one,
2020-05-21 11:30:58,313 sound output  use the environment variable 'XPRA_PULSE_SINK_DEVICE_NAME'
2020-05-21 11:30:58,313 sound output using default pulseaudio device
2020-05-21 11:30:59,118 Error: cannot access the list of printers
2020-05-21 11:30:59,118  failed to connect to server
2020-05-21 11:31:00,136 Warning: server connection failure:
2020-05-21 11:31:00,136  server error
2020-05-21 11:31:00,136  error accepting new connection