Arnold Krille wrote:
On Wednesday 07 January 2009 09:04:37 david wrote:
Arnold Krille wrote:
On Tuesday 06 January 2009 11:11:44 david wrote:
Thanks, but 100E secondhand means it's
probably well out of my price
range. My laptop does have a PCMCIA slot. I have a compact flash card
reader that plugs into it, but data transfers are very slow through it.
I wouldn't be surprised to find that the silly laptop shares interrupts
with PCMCIA, video and audio hardware!
You can get your surprise from a simply
"cat /proc/interrupts"...
OK, so what does the following mean:
16: 1 IO-APIC-fasteoi uhci_hcd:usb1, yenta
Your pcmcia is sharing the interrupt with the first usb-port. You can use lsusb
or usbview to see which devices you plugged in there. They will disturb your
pcmcia-experience.
That would make sense. Output of lsusb:
Bus 004 Device 010: ID 0781:8889 SanDisk Corp. SDDR-88 Imagemate 8-in-1
Reader
Bus 004 Device 008: ID 041e:3f07 Creative Technology, Ltd
Bus 004 Device 006: ID 04a9:220e Canon, Inc. CanoScan N1240U/LiDE 30
Bus 004 Device 005: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 004 Device 004: ID 0c0b:b311 Dura Micro, Inc. (Acomdata)
Bus 004 Device 003: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 1376:d002 Vimtron Electronics Co., Ltd.
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
So which one is usb1?
If I have a
soft synth running, big updates to the screen display will
make it start and stop. But I'm not running an RT kernel here.
Please not that while your graphics card isn't listed in the output of "cat
/proc/interrupts" this doesn't mean that it isn't sending interrupts. Only
there is no driver caring about them. So it can still be that the graphics is
disturbing your sound-interrupts...
I'm pretty sure it's the graphics that are hogging things. The Intel
video driver doesn't work properly on my laptop (it blows all the fonts
up by a factor of 10), so I'm using the VESA driver.
--
David
gnome(a)hawaii.rr.com
authenticity, honesty, community