revert an upgrade?

[Colin Law]

On 26 April 2014 13:48, Karl Auer <kauer at biplane.com.au> wrote:
> On Sat, 2014-04-26 at 13:33 +0100, Colin Law wrote:
>> > Is dist-upgrade "safe" in that sense?
>>
>> Yes it is safe, it does not upgrade to the next release.  The only
>> difference from upgrade (I believe) is that any new packages required
>> will also be installed.
>
> kauer at karl:~$ sudo apt-get update && sudo apt-get dist-upgrade
> [sudo] password for kauer:
> [...apt-get update output snipped...]
> Reading package lists... Done
> Building dependency tree
> Reading state information... Done
> Calculating upgrade... Done
> 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

You could try reinstalling the kernel as Peter suggested, but I will
be surprised if that is the problem.  However I am often surprised....

What happens if you boot with the latest kernel but then login as a
different user or as Guest?  This will show whether it is the settings
for the user that is at fault or something more fundamental.

Colin