kubuntu: after dist-upgrade powerdevil unable to launch

[Florian Hänel]

Installed from wily-desktop-amd64.iso downloaded May 15
sha1 88cef72a46dd88341ea65a5d3bd8740c77d97ab5
md5 cb7ff9362b820806213ea92990f8dc15

At first power management works.
After I did a dist-upgrade I got the following dependency errors:

Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
 libkf5package5 : Depends: libkf5package-data (= 5.10.0-0ubuntu1) but it is not installed
                  Recommends: kpackagetool5 (>= 5.10.0-0ubuntu1) but 5.9.0-0ubuntu1 is installed
 libkf5su5 : Depends: libkf5su-data (= 5.10.0-0ubuntu1) but it is not installed
E: Unmet dependencies. Try using -f.

Then, after doing install -f, powerdevil fails to launch. I am unable to use the energy savings panel.

I get some errors in .xsession-errors:

Could not open library '/usr/lib/x86_64-linux-gnu/libkdeinit5_kwrited'.
Cannot load library /usr/lib/x86_64-linux-gnu/libkdeinit5_kwrited: (/usr/lib/x86_64-linux-gnu/libkdeinit5_kwrited.so: cannot open shared object file: No such file or directory)kf5.kded: Could not load kded module "powerdevil":"The shared library was not found." (library path was:"powerdevil")

But I am not sure if all of them are related.

I upgraded with deb http://ppa.launchpad.net/kubuntu-ppa/next-stage2/ubuntu wily main and the error persists.

I was able to reproduce this again after a fresh install.

[Florian Hänel (heeen)]

using strace I am able to see that kded5 eventually looks at powerdevil in the right location, but still does not load it:

[~] # strace -p $(pidof kded5) -s 200 -f 2>&1 | grep power
[pid 1277] recvmsg(8, {msg_name(0)=NULL, msg_iov(1)=[{"l\1\0\1\17\0\0\0001\0\0\0n\0\0\0\1\1o\0\5\0\0\0/kded\0\0\0\6\1s\0\r\0\0\0org.kde.kded5\0\0\0\2\1s\0\r\0\0\0org.kde.kded5\0\0\0\3\1s\0\n\
0\0\0loadModule\0\0\0\0\0\0\10\1g\0\1s\0\0\7\1s\0\5\0\0\0:1.79\0\0\0\n\0\0\0powerdevil\0", 2048}], msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 143
[pid 1277] stat(".//kf5/kded/powerdevil", 0x7ffcd719b7f0) = -1 ENOENT (No such file or directory)
[pid 1277] stat(".//kf5/kded/powerdevil.so", 0x7ffcd719b7f0) = -1 ENOENT (No such file or directory)
[pid 1277] stat(".//kf5/kded/libpowerdevil", 0x7ffcd719b7f0) = -1 ENOENT (No such file or directory)
[pid 1277] stat(".//kf5/kded/libpowerdevil.so", 0x7ffcd719b7f0) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kded/powerdevil", 0x7ffcd719b7f0) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kded/powerdevil.so", 0x7ffcd719b7f0) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kded/libpowerdevil", 0x7ffcd719b7f0) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kded/libpowerdevil.so", 0x7ffcd719b7f0) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/bin/kf5/kded/powerdevil", 0x7ffcd719b7f0) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/bin/kf5/kded/powerdevil.so", 0x7ffcd719b7f0) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/bin/kf5/kded/libpowerdevil", 0x7ffcd719b7f0) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/bin/kf5/kded/libpowerdevil.so", 0x7ffcd719b7f0) = -1 ENOENT (No such file or directory)
[pid 1277] write(2, "kf5.kded: kded module \"powerdevil\" still uses .desktop files (\"kded/powerdevil.desktop\"). Please port it to JSON metadata.\n", 123) = 123
[pid 1277] stat(".//powerdevil", 0x7ffcd719b890) = -1 ENOENT (No such file or directory)
[pid 1277] stat(".//powerdevil.so", 0x7ffcd719b890) = -1 ENOENT (No such file or directory)
[pid 1277] stat(".//libpowerdevil", 0x7ffcd719b890) = -1 ENOENT (No such file or directory)
[pid 1277] stat(".//libpowerdevil.so", 0x7ffcd719b890) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/lib/x86_64-linux-gnu/qt5/plugins/powerdevil", 0x7ffcd719b890) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/lib/x86_64-linux-gnu/qt5/plugins/powerdevil.so", 0x7ffcd719b890) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/lib/x86_64-linux-gnu/qt5/plugins/libpowerdevil", 0x7ffcd719b890) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/lib/x86_64-linux-gnu/qt5/plugins/libpowerdevil.so", 0x7ffcd719b890) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/bin/powerdevil", 0x7ffcd719b890) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr/bin/powerdevil.so", 0x7ffcd719b890) = -1 ENOENT (No such file or directory)
[pid 1277] stat("/usr...