xpra: fix #85694 #87985

bbjubjub2494 · 2020-05-16T21:39:15Z

Motivation for this change

Things done

Hard-code the default libfakeXinerama location instead of relying on the automatic detection dance that upstream does.

I tried to make the dance succeed but couldn't do it. It would require at least bringing in binutils so ctypes.util can call ld and adding a SONAME to libfakeXinerama, but in fine it would still be quite fragile.

mjlbach · 2020-05-17T00:48:55Z

Previously we had to use:

 xpra start --daemon=no --fake-xinerama=no :100

I'm assuming after this PR, disabling fake-xinerama is no longer supposed to be necessary?

I tried to test this but getting the following error:

Steps:

xpra start :100
DISPLAY=:100 konsole
xpra attach :100

clientside:

2020-05-16 17:46:00,551 Error: cannot access the list of printers
2020-05-16 17:46:00,552  failed to connect to server
2020-05-16 17:46:01,571 Warning: server connection failure:
2020-05-16 17:46:01,571  server error
2020-05-16 17:46:01,571  error accepting new connection

serverside

2020-05-16 17:45:30,357 Error during threaded setup of <class 'xpra.server.mixins.child_command_server.ChildCommandServer'>
Traceback (most recent call last):
  File "/nix/store/yb8as201yjn4vcbpcl7x704qp96bx6k4-xpra-3.0.9/lib/python3.7/site-packages/xpra/server/server_base.py", line 170, in threaded_init
    c.threaded_setup(self)
  File "/nix/store/yb8as201yjn4vcbpcl7x704qp96bx6k4-xpra-3.0.9/lib/python3.7/site-packages/xpra/server/mixins/child_command_server.py", line 92, in threaded_setup
    load_xdg_menu_data()
  File "/nix/store/yb8as201yjn4vcbpcl7x704qp96bx6k4-xpra-3.0.9/lib/python3.7/site-packages/xpra/platform/xposix/xdg_helper.py", line 237, in load_xdg_menu_data
    xdg_menu_data = do_load_xdg_menu_data()
  File "/nix/store/yb8as201yjn4vcbpcl7x704qp96bx6k4-xpra-3.0.9/lib/python3.7/site-packages/xpra/platform/xposix/xdg_helper.py", line 268, 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'
2020-05-16 17:45:30,373  uid=1000 (mjlbach), gid=100 (users)
2020-05-16 17:45:30,373  running with pid 12264 on Linux
2020-05-16 17:45:30,378  connected to X11 display :99 with 24 bit colors
2020-05-16 17:45:30,404 15.5GB of system memory
2020-05-16 17:45:59,410 New unix-domain connection received
2020-05-16 17:45:59,411  on '/run/user/1000/xpra/nixos-99'
2020-05-16 17:45:59,413 Handshake complete; enabling connection
2020-05-16 17:45:59,423  mmap is enabled using 256MB area in /run/user/1000/xpra/xpra.wv3t7g7i.mmap
2020-05-16 17:45:59,424 Python/GTK3 Linux x11 client version 3.0.9-r26127 64-bit
2020-05-16 17:45:59,424  connected from 'nixos' as 'mjlbach'
2020-05-16 17:45:59,479 setting key repeat rate from client: 600ms delay / 40ms interval
2020-05-16 17:45:59,480 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
2020-05-16 17:45:59,493 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
2020-05-16 17:45:59,523  client root window size is 2560x1440 with 1 display:
2020-05-16 17:45:59,523   :0.0 (602x342 mm - DPI: 108x106) workarea: 2560x1331 at 0x24
2020-05-16 17:45:59,523     DEL DP-0 (598x336 mm - DPI: 108x108)
2020-05-16 17:45:59,544 server virtual display now set to 2560x1440
2020-05-16 17:45:59,558 Error: processing new connection from Protocol(unix-domain socket:/run/user/1000/xpra/nixos-99):
2020-05-16 17:45:59,559  'MenuEntry' object has no attribute 'Type'
2020-05-16 17:45:59,559 Disconnecting client /run/user/1000/xpra/nixos-99:
2020-05-16 17:45:59,559  server error (error accepting new connection)
2020-05-16 17:45:59,560 xpra client 1 disconnected.
2020-05-16 17:45:59,570 DPI set to 108 x 107
2020-05-16 17:46:00,357 New unix-domain connection received
2020-05-16 17:46:00,357  on '/run/user/1000/xpra/nixos-99'

bbjubjub2494 · 2020-05-17T09:23:32Z

Previously we had to use:
 xpra start --daemon=no --fake-xinerama=no :100
I'm assuming after this PR, disabling fake-xinerama is no longer supposed to be necessary?

Yes it is.

I tried to test this but getting the following error:

Steps:

xpra start :100
DISPLAY=:100 konsole
xpra attach :100

clientside:

2020-05-16 17:46:00,551 Error: cannot access the list of printers
2020-05-16 17:46:00,552  failed to connect to server
2020-05-16 17:46:01,571 Warning: server connection failure:
2020-05-16 17:46:01,571  server error
2020-05-16 17:46:01,571  error accepting new connection

serverside

2020-05-16 17:45:30,357 Error during threaded setup of <class 'xpra.server.mixins.child_command_server.ChildCommandServer'>
Traceback (most recent call last):
  File "/nix/store/yb8as201yjn4vcbpcl7x704qp96bx6k4-xpra-3.0.9/lib/python3.7/site-packages/xpra/server/server_base.py", line 170, in threaded_init
    c.threaded_setup(self)
  File "/nix/store/yb8as201yjn4vcbpcl7x704qp96bx6k4-xpra-3.0.9/lib/python3.7/site-packages/xpra/server/mixins/child_command_server.py", line 92, in threaded_setup
    load_xdg_menu_data()
  File "/nix/store/yb8as201yjn4vcbpcl7x704qp96bx6k4-xpra-3.0.9/lib/python3.7/site-packages/xpra/platform/xposix/xdg_helper.py", line 237, in load_xdg_menu_data
    xdg_menu_data = do_load_xdg_menu_data()
  File "/nix/store/yb8as201yjn4vcbpcl7x704qp96bx6k4-xpra-3.0.9/lib/python3.7/site-packages/xpra/platform/xposix/xdg_helper.py", line 268, 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'
2020-05-16 17:45:30,373  uid=1000 (mjlbach), gid=100 (users)
2020-05-16 17:45:30,373  running with pid 12264 on Linux
2020-05-16 17:45:30,378  connected to X11 display :99 with 24 bit colors
2020-05-16 17:45:30,404 15.5GB of system memory
2020-05-16 17:45:59,410 New unix-domain connection received
2020-05-16 17:45:59,411  on '/run/user/1000/xpra/nixos-99'
2020-05-16 17:45:59,413 Handshake complete; enabling connection
2020-05-16 17:45:59,423  mmap is enabled using 256MB area in /run/user/1000/xpra/xpra.wv3t7g7i.mmap
2020-05-16 17:45:59,424 Python/GTK3 Linux x11 client version 3.0.9-r26127 64-bit
2020-05-16 17:45:59,424  connected from 'nixos' as 'mjlbach'
2020-05-16 17:45:59,479 setting key repeat rate from client: 600ms delay / 40ms interval
2020-05-16 17:45:59,480 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
2020-05-16 17:45:59,493 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
2020-05-16 17:45:59,523  client root window size is 2560x1440 with 1 display:
2020-05-16 17:45:59,523   :0.0 (602x342 mm - DPI: 108x106) workarea: 2560x1331 at 0x24
2020-05-16 17:45:59,523     DEL DP-0 (598x336 mm - DPI: 108x108)
2020-05-16 17:45:59,544 server virtual display now set to 2560x1440
2020-05-16 17:45:59,558 Error: processing new connection from Protocol(unix-domain socket:/run/user/1000/xpra/nixos-99):
2020-05-16 17:45:59,559  'MenuEntry' object has no attribute 'Type'
2020-05-16 17:45:59,559 Disconnecting client /run/user/1000/xpra/nixos-99:
2020-05-16 17:45:59,559  server error (error accepting new connection)
2020-05-16 17:45:59,560 xpra client 1 disconnected.
2020-05-16 17:45:59,570 DPI set to 108 x 107
2020-05-16 17:46:00,357 New unix-domain connection received
2020-05-16 17:46:00,357  on '/run/user/1000/xpra/nixos-99'

Cannot reproduce. On my machine (under GNOME3) both xterm and konsole go through without any fatal errors. Looks like this is another bug entirely that you hit because this one is squashed. Without this patch, the client side crashes like has been reported previously:

2020-05-17 11:20:53,248 Error: cannot start the seamless server
Traceback (most recent call last):
  File "/nix/store/pl8vmzwd3bwrqaymm5i3vlam8ny1wjp7-xpra-3.0.9/lib/python3.7/site-packages/xpra/scripts/server.py", line 852, in do_run_server
    app.server_init()
  File "/nix/store/pl8vmzwd3bwrqaymm5i3vlam8ny1wjp7-xpra-3.0.9/lib/python3.7/site-packages/xpra/x11/server.py", line 223, in server_init
    X11ServerBase.server_init(self)
  File "/nix/store/pl8vmzwd3bwrqaymm5i3vlam8ny1wjp7-xpra-3.0.9/lib/python3.7/site-packages/xpra/x11/x11_server_core.py", line 106, in server_init
    self.x11_init()
  File "/nix/store/pl8vmzwd3bwrqaymm5i3vlam8ny1wjp7-xpra-3.0.9/lib/python3.7/site-packages/xpra/x11/server.py", line 246, in x11_init
    X11ServerBase.x11_init(self)
  File "/nix/store/pl8vmzwd3bwrqaymm5i3vlam8ny1wjp7-xpra-3.0.9/lib/python3.7/site-packages/xpra/x11/x11_server_core.py", line 129, in x11_init
    elif os.path.isabs(self.fake_xinerama):
  File "/nix/store/2dcsn57cgaxs92ha5swihrab0g3l2h6g-python3-3.7.7/lib/python3.7/posixpath.py", line 66, in isabs
    s = os.fspath(s)
TypeError: expected str, bytes or os.PathLike object, not NoneType
2020-05-17 11:20:53,250 expected str, bytes or os.PathLike object, not NoneType

bbjubjub2494 · 2020-05-17T09:29:46Z

@mjlbach Just reproduced on a KDE virtual machine. That seems to be KDE specific for some reason. Can you open an issue?

mjlbach · 2020-05-17T09:34:08Z

@mjlbach Just reproduced on a KDE virtual machine. That seems to be KDE specific for some reason. Can you open an issue?

Yes, I'll do that right now. Just to clarify, even with this patch, we should still use xpra start --daemon=no --fake-xinerama=no ? I wasn't sure what you meant by yes (my fault for wording my comment ambiguously in the first place).

bbjubjub2494 · 2020-05-17T09:38:49Z

@mjlbach Just reproduced on a KDE virtual machine. That seems to be KDE specific for some reason. Can you open an issue?

Yes, I'll do that right now. Just to clarify, even with this patch, we should still use xpra start --daemon=no --fake-xinerama=no ? I wasn't sure what you meant by yes (my fault for wording my comment ambiguously in the first place).

My bad. The fake-xinerama option should not be needed anymore after this patch. if it's set to auto (the default), it will go to the hardcoded path instead of crashing.

mjlbach · 2020-05-17T09:55:38Z

I'm having a hard time reproducing the failure, I just reinstalled this PR to run some debugging and it seems to work. I'm curious what you did in the VM, because i can't figure out what is different. The one thing I noticed (which I can open a separate issue for) is that xpra seems to not shut down cleanly, requiring killing the process to get it to start on the same DISPLAY.

xpra start :100
xpra list
xpra stop :100
xpra list
xpra start :100
cat /run/user/1000/xpra/:100.log

2020-05-17 02:50:22,214 cannot use uinput for virtual devices:
2020-05-17 02:50:22,214  [Errno 19] Failed to open the uinput device: No such device
(EE)
Fatal server error:
(EE) Server is already active for display 100
        If this server is no longer running, remove /tmp/.X100-lock
        and start again.
(EE)
(EE)
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
(EE)
2020-05-17 02:50:22,220
2020-05-17 02:50:22,220 Xvfb command has terminated! xpra cannot continue
2020-05-17 02:50:22,220  if the display is already running, try a different one,
2020-05-17 02:50:22,220  or use the --use-display flag
2020-05-17 02:50:22,220

The following works on my computer now:

pkill -9 -f xpra
xpra start :100
DISPLAY=:100 konsole
xpra attach :100

So this PR LGTM? Thanks for fixing this, this has been one of those packages that I've always missed working on NixOS.

bbjubjub2494 · 2020-05-17T10:13:07Z

My VM is a declaratively built QEMU VM. It's here. (You probably want to remove the Lourkeur™ Custom™ Ergonomic Keyboard Layout™.) It has access to the host's Nix store, that's how I got rebuilt xpra's on it.

pkgs/tools/X11/xpra/default.nix

bbjubjub2494 · 2020-06-03T14:29:03Z

@offlinehacker please lmk what I have left to do to get this merged

offlinehacker · 2020-06-03T14:36:59Z

It looks good, I just waited some time to see if anyone will comment anything, but I think we can merge it 🙂

xpra: fix NixOS#85694

8b92f67

ofborg bot added 10.rebuild-darwin: 1-10 10.rebuild-darwin: 1 10.rebuild-linux: 1-10 labels May 16, 2020

bbjubjub2494 marked this pull request as draft May 16, 2020 22:00

bbjubjub2494 marked this pull request as ready for review May 17, 2020 09:38

mjlbach mentioned this pull request May 17, 2020

Xpra tracking issue #86164

Open

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bbjubjub2494 marked this pull request as ready for review May 17, 2020 10:31

mjlbach mentioned this pull request May 17, 2020

Xpra: fails to attach on KDE Plasma #88035

Closed

offlinehacker reviewed May 20, 2020

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mjlbach mentioned this pull request May 21, 2020

Xpra: 3.0.9 -> 4.0.2 #88526

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bbjubjub2494 requested a review from offlinehacker May 21, 2020 20:54

offlinehacker approved these changes May 22, 2020

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[20.03] xpra: fix #41106 #85694 #88581

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offlinehacker merged commit fd9d37e into NixOS:master Jun 3, 2020

bbjubjub2494 deleted the fix_85694 branch June 3, 2020 14:37

This was referenced Jun 8, 2020

xpra faults on startup #63631

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Unable to start xpra with xpra start #30822

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Cannot run xpra using Xdummy in parallel with desktop X environment #24652

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Xpra failing to start on 16.03 #14540

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xpra: fix #85694 #87985

xpra: fix #85694 #87985

bbjubjub2494 commented May 16, 2020

mjlbach commented May 17, 2020

bbjubjub2494 commented May 17, 2020

bbjubjub2494 commented May 17, 2020

mjlbach commented May 17, 2020

bbjubjub2494 commented May 17, 2020

mjlbach commented May 17, 2020 •

edited

bbjubjub2494 commented May 17, 2020

bbjubjub2494 commented Jun 3, 2020

offlinehacker commented Jun 3, 2020

xpra: fix #85694 #87985

xpra: fix #85694 #87985

Conversation

bbjubjub2494 commented May 16, 2020

Motivation for this change

Things done

mjlbach commented May 17, 2020

bbjubjub2494 commented May 17, 2020

bbjubjub2494 commented May 17, 2020

mjlbach commented May 17, 2020

bbjubjub2494 commented May 17, 2020

mjlbach commented May 17, 2020 • edited

bbjubjub2494 commented May 17, 2020

bbjubjub2494 commented Jun 3, 2020

offlinehacker commented Jun 3, 2020

mjlbach commented May 17, 2020 •

edited