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So last night I tried to update using the update manager and I couldn't because I encountered an error halfway through (error:brokencount>0). Today I wanted to install a package with ubuntu software center and I got an error message telling me there is a problem that needs to be fixed because my package system is broken, there was a repair button but that didn't fix anything and instead gave me another error message..

this is what I get when doing upgrade in the terminal

robin@robin-1005PX:~$ sudo apt-get upgrade
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:
 liboxideqtcore0 : Depends: oxideqt-codecs (= 1.0.0~bzr501-0ubuntu1) but 1.0.0~bzr501-0ubuntu2 is installed or
                            oxideqt-codecs-extra (= 1.0.0~bzr501-0ubuntu1) but it is not installed
E: Unmet dependencies. Try using -f.

and this is what I get when running sudo apt-get install -f

robin@robin-1005PX:~$ sudo apt-get install -f
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
The following packages will be upgraded:
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/20,8 MB of archives.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
(Reading database ... 168238 files and directories currently installed.)
Preparing to unpack .../liboxideqtcore0_1.0.0~bzr501-0ubuntu2_i386.deb ...
Unpacking liboxideqtcore0:i386 (1.0.0~bzr501-0ubuntu2) over (1.0.0~bzr501-0ubuntu1) ...
dpkg-deb (subprocess): cannot copy archive member from '/var/cache/apt/archives/liboxideqtcore0_1.0.0~bzr501-0ubuntu2_i386.deb' to decompressor pipe: failed to read (Input/output error)
dpkg-deb (subprocess): decompressing archive member: lzma error: unexpected end of input
dpkg-deb: error: subprocess <decompress> returned error exit status 2
dpkg: error processing archive /var/cache/apt/archives/liboxideqtcore0_1.0.0~bzr501-0ubuntu2_i386.deb (--unpack):
 cannot copy extracted data for './usr/lib/i386-linux-gnu/' to '/usr/lib/i386-linux-gnu/': unexpected end of file or stream
Errors were encountered while processing:
E: Sub-process /usr/bin/dpkg returned an error code (1)

does anyone know how I can fix this issue? it's pretty annotying because I can't install anything and updating is also impossible.. thanks in advance!

share|improve this question
it shows Input/output error. Please check for bad blocks on your disk. – Avinash Raj Apr 21 '14 at 9:47
how do I do that? I tried self-test in the disk utility but it failed? – user271855 Apr 21 '14 at 10:09
It is well discussed here: I was unable to find a worthwhile solution as, apparently, my upgrade wrecked a bunch of random stuff. Wiping and reinstalling seems the only trustworthy ubuntu upgrade scenario. – user272079 Apr 23 '14 at 21:33
I managed to fix the issue by repeatedly using apt get update, install -f, clean, configure and upgrade – user271855 Apr 25 '14 at 4:38
I just experienced the same issue. As a result of this problem, my system even failed to load mouse drivers and WLAN drivers. That means I have no more internet connection and can't even use eg. sudo apt-get -f install or sudo apt-get update. – John Slegers Sep 15 '15 at 9:42

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