Sound probelms with Sony laptop
I came into possesion of a sony PCG-F490 laptop. It is currently running XP Pro. Specs are: 600MHz cpu, 192MB, 16Gig hd, Avaya wireless card. It is supposed to have an integrated Yamaha sound card, but that hasnt worked since i got the laptop. Iv tried windows updates, sony drivers from 98 through XP along with yamaha drivers from 98 through XP. It still doesnt work. Under device manager it shows up as Yamaha Native DS1 WDM Driver. I currently have it disabled and purchased an external USB sound card from creative. Its the Sound Blaster MP3+ model no. SB0270. It doesnt require any external power. I hooked this up and installed the drivers and it doesnt work either. I get the same windows Code 10 Device cannot start. If you look under device manager its listed under USB as USB Composite Device with a yellow explanation mark. I checked DMA support like Creative suggested and attempted to upgrade the Intel 82371 AB/EB chipset drivers, this told me XP already supported everything in the system. I have also tried wiping the HD and installing XP pro again, with no luck. If any body can help with this it would be greatly appriciated. Thanks
A 'welcome' & a little 'creative' bashing ..
So welcome to windrivers forums joemck & thanks for your 'diy instructions' ;)
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..A user of another forum explained that while the SB MP3+ does, as Creative states, draw 160 mA of power from the USB port, it draws WELL OVER 500 mA for a few microseconds when it starts. Old USB 1.1, especially in desktops, is more tollerant of devices taking too much power. USB 2.0, especially in laptops, turns off a USB port the instant it goes over 500 mA...
The long & the short of this, isn't to do with usb versions whatsoever, sure the power & 'not working properly' limits between them are different in terms of 'error', but the bottom line is that the motherboard can't 'fund' the power draw through the port.
So I think the 'fault' is with the devices attached (for drawing 'over spec' in power terms) & your eventual conclusion draws this out ..
Quote:
..Why didn't Creative put the resistor in there in the first place? It would cost them about two cents a unit and they'd have many more happy customers..
What 'creative do something right ?' - they ain't done that with anything since the original soundblaster :rolleyes: - generally they make 'pants stuff' & without a 'reputation' would have gone bust long since ;)