Humming while scrolling or moving window

garryguy · Post by **garryguy** » Wed May 16, 2007 4:53 am

Hi,
now the second annoying problem:
after a system crash and complete new software installation I've got some problems with my Lunar/Pulsar combination.
When I scroll in a window or move a window I hear a humming crackling sound. This happens independend of any software, even with a simple project with connects just the wave source modul tho the Luna or pulsar analog out.
Any help?
Thanks, Gerold

LunaII+PulsarII
Pentium 3, 4 GhZ, hyperthreading disabled, GA 8IPE1000 Mainboard, 1 MB DDR2 RAM, ATI Radeon 9600, dual monitor, WIN XP SPII Cubase SL 3.1.1

Immanuel · Post by **Immanuel** » Wed May 16, 2007 6:30 am

Is your PSU powerfull enough?

garryguy · Post by **garryguy** » Wed May 16, 2007 7:30 am

Hi,
thanks for the reply.

Sorry, I'm not sure what you mean with PSU.

regards,
Gerold

bassdude · Post by **bassdude** » Wed May 16, 2007 3:58 pm

Post your IRQ list up so we can see it. There may be an IRQ conflict with the pulsar/luna card.

garryguy · Post by **garryguy** » Thu May 17, 2007 4:07 am

Hi,
thanks for the replies. The PSU should be strong enough.
With the interrupst I have different informations depending if I look at the startupscreen before windows boots respectively use a hardware analyzing programm or if I look in the windows device manager.
Startup screen/hardware analysis says:
IRQ 0 - Timer
IRQ1 - Keyb. contr.
IRQ 2 - ISA IRQ contr
IRQ 3 - free
IRQ 4 - COM
IRQ 5 - Pulsar
IRQ5 - Luna
IRQ 6 - USB
7 - SMBus
8- Clock
9- USB2.0
10- Graphic contr
11 - Lan contr
12 - Mouse
13 - math processor
14 IDE1
15 IDE 2
In the BIOS setup utility I set the two PCI ports were Luna and Pulsar are plugged in to IRQ 5. but also switching to other IRQs or using a different IRQ for the cards didn't help.

Windows device managar says Luna IRQ21, Pulsar IRQ 22, no conflicts

greetings Gerold

Post by **garyb** » Thu May 17, 2007 8:57 am

"no conflicts" means nothing. neither does the irq settings in the bios if you are using acpi, as demonstrated by the device manager showing a different irq than at startup. check system information/hardware/conflicts-sharing and see if the cards are on that list.

garryguy · Post by **garryguy** » Fri May 18, 2007 3:45 am

Ok, I've checked this , no conflicts - but I also fixed the problem.
It's somehow stupid and I'm not sure what went really wrong, but I've changed the cable at the Luna Analog IN jack - and everything is fine. I still don't understand - if the cable was the problem - why the humming occured while scrolling or moving windows but now it works fine as before.
many thanks for your help
regards,
Gerold