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I was having an error in Update Manager that asks me to do a partial upgrade and it fails. Now I can't sudo apt-get install anything. I tried to fix it, and now I can't sudo apt-get anything. Every time, I get this output:

Reading package lists... Error!
E: Dynamic MMap ran out of room. Please increase the size of APT::Cache-Limit. Current value: 25165824. (man 5 apt.conf)
E: Error occurred while processing libuptimed0 (NewVersion1)
E: Problem with MergeList
W: Unable to munmap
E: The package lists or status file could not be parsed or opened.

I have no idea why this is happening or how to fix it, and I fear that if I try something that probably doesn't work that it will make my problem worse. (Just for reference I am currently running 10.04 (Lucid) on my machine.)

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up vote 12 down vote accepted

I believe one solution is just increase the value APT::Cache-Limit at the /etc/apt/apt.conf.d/70debconf, to do so use:

sudo gedit /etc/apt/apt.conf.d/70debconf

and add the following to the end of the file:

APT::Cache-Limit "100000000";

..and then run:

sudo apt-get clean
sudo apt-get update --fix-missing
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This didn't work for me, it still says the same thing but after a longer time – user1610406 Nov 19 '12 at 23:30
ACTUALLY, I called what was supposed to be 70debconf 70debconfig and misspelled cache... whoops... And after I fixed that, it worked really well! <3 – user1610406 Nov 19 '12 at 23:34
Just as an aside, this is helping me fix a 12 year old computer running a Debian 4.x which won't boot from USB nor optical drive... I'm glad I put on a Debian last time I used it :-) – Jan Aug 6 '15 at 20:25

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