bug#25738: 25.1; Emacs Network Client (ENWC) problem when non-wired

[Live System User]

Hi,

  There appears to be an unhandled condition with the Emacs Network Client
  (ENWC) in the Gnu ELPA when you don't have a wired connection (and
  only have wireless available) and thus no "eth0" device which ENWC
  then uses for some subsequent D-bus operations:

Debugger entered--Lisp error: (dbus-error "No device found for the requested 
iface.")
  signal(dbus-error ("No device found for the requested iface."))
  dbus-call-method(:system "org.freedesktop.NetworkManager" 
"/org/freedesktop/NetworkManager" "org.freedesktop.NetworkManager" 
"GetDeviceByIpIface" :timeout 25000 :string "eth0")
  enwc-nm-get-device-by-name("eth0")
  (setq enwc-nm-wired-dev (enwc-nm-get-device-by-name enwc-wired-device) 
enwc-nm-wireless-dev (enwc-nm-get-device-by-name enwc-wireless-device))
  enwc-nm-setup()
  funcall(enwc-nm-setup)
  (let ((sym-name (symbol-name cur-back))) (setq enwc-scan-func (intern (concat 
"enwc-" sym-name "-scan")) enwc-get-nw-func (intern (concat "enwc-" sym-name 
"-get-networks")) enwc-get-wireless-nw-prop-func (intern (concat "enwc-" 
sym-name "-get-wireless-network-property")) enwc-get-wireless-nw-props-func 
(intern (concat "enwc-" sym-name "-get-wireless-nw-props")) enwc-details-list 
(symbol-value (intern (concat "enwc-" sym-name "-details-list"))) 
enwc-get-encryption-type-func (intern (concat "enwc-" sym-name 
"-get-encryption-type")) enwc-wireless-connect-func (intern (concat "enwc-" 
sym-name "-connect")) enwc-get-current-nw-id-func (intern (concat "enwc-" 
sym-name "-get-current-nw-id")) enwc-check-connecting-func (intern (concat 
"enwc-" sym-name "-check-connecting")) enwc-get-wired-profiles-func (intern 
(concat "enwc-" sym-name "-get-wired-profiles")) enwc-is-wired-func (intern 
(concat "enwc-" sym-name "-is-wired")) enwc-wired-connect-func (intern (concat 
"enwc-" sym-name "-wired-connect")) enwc-wired-disconnect-func (intern (concat 
"enwc-" sym-name "-wired-disconnect")) enwc-get-sec-types-func (intern (concat 
"enwc-" sym-name "-get-sec-types")) enwc-get-ip-addr-func (intern (concat 
"enwc-" sym-name "-get-ip-addr")) enwc-get-netmask-func (intern (concat "enwc-" 
sym-name "-get-netmask")) enwc-get-gateway-func (intern (concat "enwc-" 
sym-name "-get-gateway")) enwc-get-dns-func (intern (concat "enwc-" sym-name 
"-get-dns")) enwc-get-nw-info-func (intern (concat "enwc-" sym-name 
"-get-nw-info")) enwc-save-nw-settings-func (intern (concat "enwc-" sym-name 
"-save-nw-settings"))) (funcall (intern (concat "enwc-" sym-name "-setup"))))
  enwc-setup-backend(nm)
  (if cur-back (enwc-setup-backend cur-back) (error "No usable backend found."))
  (let ((cur-back nil) (back-list enwc-backends)) (while (and back-list (not 
cur-back)) (setq cur-back (car-safe (prog1 back-list (setq back-list (cdr 
back-list))))) (if (not (dbus-ping :system (symbol-value (intern (concat 
"enwc-" ... "-dbus-service"))))) (setq cur-back nil))) (if cur-back 
(enwc-setup-backend cur-back) (error "No usable backend found.")))
  enwc-setup()
  eval((enwc-setup) nil)
  elisp--eval-last-sexp(nil)
  eval-last-sexp(nil)
  funcall-interactively(eval-last-sexp nil)
  call-interactively(eval-last-sexp nil nil)
  command-execute(eval-last-sexp)
  

  Thanks.



In GNU Emacs 25.1.1 (x86_64-redhat-linux-gnu, GTK+ Version 3.20.9)
 of 2016-10-13 built on buildvm-05.phx2.fedoraproject.org
Windowing system distributor 'Fedora Project', version 11.0.11803000
Configured using:
 'configure --build=x86_64-redhat-linux-gnu
 --host=x86_64-redhat-linux-gnu --program-prefix=
 --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr
 --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc
 --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64
 --libexecdir=/usr/libexec --localstatedir=/var
 --sharedstatedir=/var/lib --mandir=/usr/share/man
 --infodir=/usr/share/info --with-dbus --with-gif --with-jpeg --with-png
 --with-rsvg --with-tiff --with-xft --with-xpm --with-x-toolkit=gtk3
 --with-gpm=no --with-xwidgets build_alias=x86_64-redhat-linux-gnu
 host_alias=x86_64-redhat-linux-gnu 'CFLAGS=-DMAIL_USE_LOCKF -O2 -g
 -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2
 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4
 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
 -m64 -mtune=generic' LDFLAGS=-Wl,-z,relro
 PKG_CONFIG_PATH=:/usr/lib64/pkgconfig:/usr/share/pkgconfig'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GCONF GSETTINGS NOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XWIDGETS

Important settings:
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Summary

Minor modes in effect:
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  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
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  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  buffer-read-only: t
  line-number-mode: t
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Recent messages:
Auto-saving...
Making completion list...

Load-path shadows:
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Memory information:
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