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could someone help me to find a solution for this problem,
when i start running synaptic package manager it gives me the following error:
E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct
the problem.
E: _cache->open() failed, please report.
command sudo dpkg --configure -a is tested on terminal as well. it gives following output:
root@kapia-laptop:/home/kapia# sudo dpkg --configure -a
dpkg: status database area is locked by another process
1
that means you have already an process of dpkg running, either as synaptic, update manager or apt-get/aptitude
as a last resort, if nothing works you can try deleting the lockfile /var/cache/apt/lock, but be careful, this can potentially corrupt your package database
knittl
Posted 2009-10-01T10:20:06.360
Reputation: 3 452
1or there could be a stale lockfile? – None – 2009-10-01T10:26:24.570
it's my experience this is the correct general case -- i've left aptitude running in another terminal and forgotten about it. if ps doesn't show any other dpkg/synaptic/aptitude processes running on the system, assuming the lockfile to be stale may be reasonable -- but i'd try rebooting before manually removing the lockfile. just in case. – quack quixote – 2009-12-23T08:18:42.790
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When you running sudo dpkg --configure -a be sure, you have closed synaptic package manager, autoupdate dialog and all other software related to packages. Only one instance at time can work with packages database.
Pawka
Posted 2009-10-01T10:20:06.360
Reputation: 561
2No it shouldn't. linux != server (at least not all the time). – TJ L – 2009-10-30T19:07:24.573
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If it's an option, I'd just reboot. Let Linux do it's thing and close the programs properly for you. Either reboot through the graphical interface, or open terminal and run sudo reboot or sudo shutdown -r now. Upon rebooting, run sudo dpkg --configure -a. If you are still getting errors regarding dpkg being locked, follow knittl's answer.
John T
Posted 2009-10-01T10:20:06.360
Reputation: 149 037
2Just reboot, all open dpkg processes will be closed... :) Then open synaptic again – Pit – 2009-10-01T11:55:17.437