kdesudo (vivid): Could not connect to display

[themroc]

kdesudo don't work anymore in Kubuntu Vivid:

~$ kdesudo kate
Bus::open: Can not get ibus-daemon's address.
IBusInputContext::createInputContext: no connection to ibus-daemon
QXcbConnection: Could not connect to display

-----------------------------------------------------------

lsb_release -rd:
Description: Ubuntu Vivid Vervet (development branch)
Release: 15.04

apt-cache policy kdesudo:
kdesudo:
  Installiert: 3.4.2.4+repack-2ubuntu4
  Installationskandidat: 3.4.2.4+repack-2ubuntu4
  Versionstabelle:
 *** 3.4.2.4+repack-2ubuntu4 0
        500 http://de.archive.ubuntu.com/ubuntu/ vivid/universe amd64 Packages
        100 /var/lib/dpkg/status

[themroc (rauchweihe)]

The kdesudo failure was caused by these entries in /etc/sudoers:

After this lines:

Defaults env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"

I had added these lines:

# Allow proxy environment variables to pass through
Defaults env_keep="no_proxy NO_PROXY"
Defaults env_keep+="all_proxy ALL_PROXY"
Defaults env_keep+="http_proxy HTTP_PROXY"
Defaults env_keep+="https_proxy HTTPS_PROXY"
Defaults env_keep+="ftp_proxy FTP_PROXY"

After removing these lines kdesudo working again.