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I think I found what makes my computer glitch and spike

Posted: Wed Oct 25, 2006 7:50 am
by henrico
I tried unplugging my midisport 4x4 from my monitor and it seemed to cure it... Not 100% sure it's that but it seemed to work last night. Was getting frequent glitches before at even low cpu %.

Just thought I'd share that with you 8)

Posted: Wed Oct 25, 2006 7:54 am
by ewistrand
?

How in the world do you plug a MIDI interface into a monitor? That doesn't make any sense at all...

ew

Posted: Wed Oct 25, 2006 7:55 am
by henrico
I've got a dell 24" one with usb ports. :D

Posted: Wed Oct 25, 2006 7:55 am
by AdamJay
ewistrand wrote:?

How in the world do you plug a MIDI interface into a monitor? That doesn't make any sense at all...

ew
could be a built in hub.
like apple cinema displays with 2x firewire and 2x USB ports.

Posted: Wed Oct 25, 2006 7:57 am
by AdamJay
henrico wrote:I've got a dell 24" one with usb ports. :D
yea i had issues with my Motu Fastlane USB Midi interface plugged into my 23" Apple display. Everything else works fine.
There are alot of midi devices that don't fair well with hubs.

Posted: Wed Oct 25, 2006 7:58 am
by henrico
What's the alternative then? I need midi (not necessarily 4 ins outs any more though).

Posted: Wed Oct 25, 2006 8:01 am
by AdamJay
plug it in directly to the computer, not the monitor.

Posted: Wed Oct 25, 2006 8:14 am
by ewistrand
henrico wrote:I've got a dell 24" one with usb ports. :D
Ah... I see. :oops:

ew

Posted: Wed Oct 25, 2006 8:20 am
by henrico
AdamJay wrote:plug it in directly to the computer, not the monitor.
How would that make a difference? It's all connected anyway. I'll give it a go though... I hate m-audio :x

Posted: Wed Oct 25, 2006 8:39 am
by AdamJay
henrico wrote:
AdamJay wrote:plug it in directly to the computer, not the monitor.
How would that make a difference? It's all connected anyway. I'll give it a go though... I hate m-audio :x
you lose bandwidth by going through a hub.
direct connection = maximum bandwidth and less of a chance for a driver conflict.

Posted: Wed Oct 25, 2006 8:40 am
by henrico
Makes sense :wink:

Posted: Wed Oct 25, 2006 4:11 pm
by pev
If that cures it, assuming you have a machine with PCI, stick in a new USB2 PCI card for best results. You only have finite bandwidth...

~Pev

Posted: Wed Oct 25, 2006 4:22 pm
by Tarekith
The hub could be on a difference IRQ too, lots of ways that could make a difference.

Posted: Wed Oct 25, 2006 5:27 pm
by hacktheplanet
Also, the hubs have a single current. So if you have a few bus-powered devices plugged into the hub, they may not have enough current to run.

Posted: Thu Oct 26, 2006 10:55 am
by pev
the_planet wrote:Also, the hubs have a single current. So if you have a few bus-powered devices plugged into the hub, they may not have enough current to run.
This is true, but with USB what should happen is that the device will report back that it is in an "over-current" state and should end up not running. I doubt this would cause this kind of symptom.

~Pev