Plasma5 needs copy command twice - wifi is dropping out

Yes - here I am again with my i586 computer after upgrade to Plasma5 desktop. It is still not behaving as it should. When I try to copy a file in Dolphin I have to highlight and give the command to copy twice (does not matter whether with right click or edit -> copy) otherwise I cannot paste it somewhere else. Command line and ‘copy to’ works OK.
Further the wireless connection seems to work OK at the start and I get IP addresses - then it drops out. Here are the connections at the start:

uli@linux-dfsr:~> ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:26:6c:76:d7:27 brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.26/24 brd 192.168.2.255 scope global dynamic eth0
       valid_lft 863828sec preferred_lft 863828sec
    inet6 2406:e001:2428:1:226:6cff:fe76:d727/64 scope global noprefixroute dynamic 
       valid_lft 7149sec preferred_lft 3549sec
    inet6 fe80::226:6cff:fe76:d727/64 scope link 
       valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether e8:39:df:4c:97:f8 brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.27/24 brd 192.168.2.255 scope global dynamic wlan0
       valid_lft 863944sec preferred_lft 863944sec
    inet6 2406:e001:2428:1:ea39:dfff:fe4c:97f8/64 scope global noprefixroute dynamic 
       valid_lft 7149sec preferred_lft 3549sec
    inet6 fe80::ea39:dfff:fe4c:97f8/64 scope link 
       valid_lft forever preferred_lft forever
uli@linux-dfsr:~> ip addr

When I click at the Icon in the system tray and select reconnect it times out with the message “No secret provided” or similar but no dialogue box came up to enter the password. Clicking to open the netwrok settings (Connection Editor) I can enter the password again but when I highlight the wireless connection the connect button stays greyed out. (Ethernet connection is working). I keep thinking that there are some files missing for a complete installation of Plasma5 but a zypper up comes with the result “nothing to do”.

I had the suspicion that over the time the system was getting messed up with me getting more and more repos for certain purposes. Some of them are still used, others are disabled.

linux-dfsr:~ # zypper lr
#  | Alias                     | Name                               | Enabled | GPG Check | Refresh
---+---------------------------+------------------------------------+---------+-----------+--------
 1 | KDE:KDE3                  | KDE:KDE3                           | Yes     | (r ) Yes  | Yes    
 2 | Packman Repository        | Packman Repository                 | Yes     | (r ) Yes  | Yes    
 3 | google-earth              | google-earth                       | Yes     | ( p) Yes  | Yes    
 4 | libdvdcss repository      | libdvdcss repository               | No      | ----      | Yes    
 5 | network                   | network                            | Yes     | (r ) Yes  | Yes    
 6 | openSUSE-13.2-0           | openSUSE-13.2-0                    | No      | ----      | No     
 7 | repo-debug                | openSUSE-13.2-Debug                | No      | ----      | Yes    
 8 | repo-debug-update         | openSUSE-13.2-Update-Debug         | Yes     | (r ) Yes  | Yes    
 9 | repo-debug-update-non-oss | openSUSE-13.2-Update-Debug-Non-Oss | No      | ----      | Yes    
10 | repo-non-oss              | openSUSE-13.2-Non-Oss              | Yes     | ( p) Yes  | Yes    
11 | repo-oss                  | openSUSE-13.2-Oss                  | Yes     | ( p) Yes  | Yes    
12 | repo-source               | openSUSE-13.2-Source               | No      | ----      | Yes    
13 | repo-update               | openSUSE-13.2-Update               | Yes     | (r ) Yes  | Yes    
14 | repo-update-non-oss       | openSUSE-13.2-Update-Non-Oss       | Yes     | (r ) Yes  | Yes    
15 | security                  | security                           | Yes     | (r ) Yes  | Yes    
linux-dfsr:~ #

So I thought I do a system upgrade from oss, non-oss, update and packman with the command:

zypper dup --from 11 --from 10 --from 13 --from 2

After nearly 300 packages were downloaded and installed I booted into the desktop. Unfortunately nothing has changed. The wireless still drops out and cannot be enabled with the Connection Editor and copying files still requires to click twice on copy. No change so far!