Scanner Problems

[Xen]

First Name Last Name schreef op 17-05-2017 3:33:

> On Tue, May 16, 2017 at 5:58 PM, Peter <petergoggin at bigpond.com> wrote: 
> 
>> I use different laptops for separate functions. Each requires documents to be scanned. I plug the usb scanners into whichever laptop I am using. there was no problem until Friday.  I have found that one of my laptops which had not been used for a few months still works with the scanners. The others which get updated on a regular basis do not.
>> 
>> Regards
>> 
>> Peter Goggin
> 
> Check and double check all of your cabling and connectors.
> Use a flashlight and inspect all of the ports where things are being plugged and unplugged. 
> The excessive plugging and unplugging may have either broken a wire within a cable or damaged the physical connectors on a port. 
> Problems like this are often difficult to troubleshoot because they are often intermittent in nature, due to the contacts/wires making intermittent connection.  Requires patience and a methodical process to verify that everything is in fact in proper working order. 
> As with all problems of this nature, complete and accurate notes of all steps taken are part of effective troubleshooting. 
> Best of Luck 
> ED

It would be more helpful to suggest he check /var/log/apt/history log on
the 2 offending laptops and see what updates have been automatically
installed. Then you can check which updates have been automatically
installed. But I don't know if there is something like the Debian
snapshot archives. In which you can go back in time whenever you want. 

But you could check if /var/cache/apt/archives on the laptop that still
functions still has them. 

Then you can try to downgrade those packages. It should be possible to
just dpkg -i them, but I am not sure. To remove them before installing
the other one without causing ruckus: dpkg --remove --force-depends
<packagename>. 

In any case you need the older packages in order to downgrade your other
laptops. 

Of course I forget to mention: turn off automatic updates on the still
healthy laptop by editing /etc/apt/apt.conf.d/20auto-upgrades or
something similar.
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