[winswitch] Unable to start xpra - cannot open log file

[Antoine Martin]

On 18/01/18 18:12, Nikolaus Rath via shifter-users wrote:
> Hello,
> 
> Xpra has been working fine for me for a while, but it suddenly fails with:
> 
> $ xpra start ssh:nivellen.lon.corp.google.com --start=xfce4-terminal
> Warning: invalid option: 'shadow-fullscreen'
> Warning: invalid option: 'shadow-fullscreen'
This is a sign that you have an old log file laying around, usually in
/etc/xpra/xpra.conf
This should have been replaced with the new one when you upgraded to our
package. I'm not sure why this didn't happen.
Not a huge problem, but a source of spurious and confusing warnings like
this one.

> 2018-01-18 11:08:08,205 Warning: the python netifaces package is missing
> 2018-01-18 11:08:08,258 Xpra gtk2 client version 2.2-r17607 64-bit
> 2018-01-18 11:08:08,258  running on Linux Debian rodete rodete
> 2018-01-18 11:08:08,258 Warning: failed to import opencv:
> 2018-01-18 11:08:08,258  No module named cv2
> 2018-01-18 11:08:08,259  webcam forwarding is disabled
> Warning: invalid option: 'shadow-fullscreen'
> 2018-01-18 11:08:08,608 GStreamer version 1.12.1 for Python 2.7.13 64-bit
> 2018-01-18 11:08:08,697 No OpenGL_accelerate module loaded: No module named
> OpenGL_accelerate
> 2018-01-18 11:08:08,812 OpenGL enabled with Mesa DRI Intel(R) HD Graphics
> 620 (Kabylake GT2)
> 2018-01-18 11:08:08,831  keyboard settings: rules=evdev, model=kinesis,
> layout=niko-kinesis
> 2018-01-18 11:08:08,831  desktop size is 1920x1200 with 1 screen:
> 2018-01-18 11:08:08,831   :0.0 (508x318 mm - DPI: 96x95)
> 2018-01-18 11:08:08,832     monitor 1 (550x350 mm - DPI: 88x87)
> Warning: invalid option: 'shadow-fullscreen'
> Warning: invalid option: 'shadow-fullscreen'
> Warning: invalid option: 'shadow-fullscreen'
> Warning: invalid option: 'shadow-fullscreen'
> 2018-01-18 11:08:16,682 Warning: the python netifaces package is missing
> Warning: cannot use the system proxy for 'start' subcommand,
>  failed to connect to '/run/xpra/system':
>  [Errno 111] Connection refused
> Warning: invalid option: 'shadow-fullscreen'
> xpra initialization error:
>  cannot open log file '${HOME}/.xpra/S260873.log': [Errno 2] No such file
> or directory: '${HOME}/.xpra/S260873.log'
Looks like $HOME is not defined in the context where the server is
started, which seems to be from the system-wide proxy since it uses
displayfd switch.

Can you try to disable the system-wide proxy:
systemctl stop xpra.service
Or start locally without it:
xpra start --start=xterm --start-via-proxy=no

Does that help?

> Error: displayfd failed
>  did not provide a display number using displayfd
> xpra initialization error:
>  failed to identify the new server display!
> 2018-01-18 11:08:41,253 Error: failed to receive anything, not an xpra
> server?
> 2018-01-18 11:08:41,253   could also be the wrong protocol, username,
> password or port
> 2018-01-18 11:08:41,254 Connection lost
> 2018-01-18 11:08:41,256 Error: printing disabled:
> 2018-01-18 11:08:41,256  No module named cups
> 
> Does anyone have an idea where to look for the root cause? It's not clear
> to me which warnings and errors are relevant here...
> 
> I don't remember making any system changes that may have caused this.
First thing you should do is to update to version 2.2.3 and see if that
fixes your issue. If not, please include more details (ie: full
distribution information) so that I can reproduce the problem.

Thanks
Antoine


> 
> Best,
> -Nikolaus
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