Thanks - we're getting somewhere.
sunwukung wrote:Processor: Pentium (R) Dual-Core CPU T4400 @ 2.20Ghz
RAM: 3064128 kb
Not too bad. A T4400 must be around 4-5 years old? It's a base dual core, but still should do the trick.
When does the lag happen?
hmmm - this one is tricky. I'm a web developer, so I don't generally need a powerful deck, or run many native apps. Generally speaking, I've got a couple of tabs open in Chrome, and Sublime Text. I figured it might be the browser, i.e. loads of Javascript processes, or Flash - but right now I've got the lag and I've only got the forum open. In addition, I've noticed it when I have no browsers open.
Have you tried disabling addons? If you're in Chrome, it's under tools - extensions, click the trashcan icon. I can't remember but I think there was a way to start Chrome with addons disabled. I think from the command line it's something like --disable-extensions - can anyone help with this?
Have you lowered the resolution - does it still continue?
I haven't lowered the resolution - although I was considering switching the USB reciever port.
Just as a test, to see if it's heavy on the graphics resolution.
Can you start Linux as a live session - does it happen then or did it only happen after installation?
I haven't tried yet, I'll give it a whirl this weekend.
Do you remember changing/adding any apps?
I've added a LAMP server, virtualenv, Sublime Text, Dropbox - I think that's it.
LAMP server may have something to do with background running processes. I had a LAMP server on the Elastix box, which is only a single core 3GHz processor and it didn't lag, but I am running xfce on it (a lightweight desktop)
What is your desktop? Gnome - KDE - Cinnamon - xfce - something else?
Whatever Mint comes with - I believe that's Gnome isn't it?
If you're at the login page, there will be an icon that allows you to change the session. Usually "Last session" is the default, but you would be able to see a list of one or more desktops, that's how you will know. If you can also go Menu - Administration - System Information and click Operating System, it should list your desktop environment.
If you are using Gnome, you can, at login by clicking the session icon, possibly also see the ability to log into more than one Gnome session (the other being a "safe mode"). You can also test with this.
Have you run updates?
Yup, several - I've installed restricted extras too.
That's a good thing. Sometimes updates will fix bugs that would also fix your issue. It seems that it hasn't yet.
I'll give a wired mouse a go this weekend
If it's mostly Chrome that's lagging, you could also install Firefox and see if you get the same result with a different browser. By elimination, you can 90% of the time figure out what's causing the issue, then have the ability to concentrate on that.
There's a couple more things, assuming it's browser specific (aka Chrome):
Start by clearing your browser cache, then:
Do sites with images take a long time to load (or are they loaded before or after the lag issue happens). That is, if you wait for a while for all image to load, would it then still lag?
How are videos on Youtube - are they streaming well?
Can you post what is in your /etc/hosts file? Here is mine (I am on an elaborate network configuration on 255.255.0.0, so I'm running a few virtual networks with different subnets). Things in <> are specific to this computer.
Start of hosts file:
-------------------------------------------------------------------------
127.0.0.1 localhost
127.0.1.1 <my computer's name>
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
-------------------------------------------------------------------------
Do you have anything similar, particularly the 127.0.0.1?