Created attachment 798937 [details]
Description of problem:
Updates aren't installed when I try to update with gnome-software. System is rebooted twice, but no updates are installed.
In logs I can see these things:
failed to read: Feailed to open file '/var/lib/PackageKit/prepared-update': No such file or directory
updates-plugin-WARNING **: failed to download: The backend exited unexpectedly. This is a serious error as the spawned backend did not complete the pending transaction.
You can find gnome-settings-daemon logs in attachment.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. run gnome-software
2. go to updates
3. click on 'restart & install'
No updates are installed.
Updates are installed
This update method is meant to be default so I propose it as freeze exception. It violates this criterion: "The installed system must be able to download and install updates with yum and with the default graphical package manager in all release-blocking desktops."
I propose it as FE because there is another possibility how to update with gui - PK which works and now is equivalent to gnome-software.
Can you please do (as root):
sudo /usr/libexec/packagekitd --backend=yum --disable-timer --verbose
Then try to reproduce the bug. Hopefully a python backtrace should appear in the terminal. If so, that allows me to find the bug. Thanks.
Created attachment 799513 [details]
output from packagekitd
This is what I get when I run suggested commands.
Created attachment 799514 [details]
output from journalctl -a
Discussed in 2013-09-18 blocker review meeting . While graphical updates are not required for alpha, fixing it would be a good move. A tested fix would be considered past freeze.
Discussed in 2013-09-18 blocker review meeting . AcceptedBlocker - Violates the following F20 beta criterion for graphical updates on a gnome install: "The installed system must be able to download and install updates with the default graphical package manager in all release-blocking desktops." 
gnome-settings-daemon-3.10.0-3.fc20 has been submitted as an update for Fedora 20.
* should fix your issue,
* was pushed to the Fedora 20 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing gnome-settings-daemon-3.10.0-3.fc20'
as soon as you are able to.
Please go to the following url:
then log in and leave karma (feedback).
gnome-settings-daemon-3.10.0-3.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.